Dummy-Robot/2.Firmware/Core-STM32F4-fw/3rdParty/u8g2/cpp/U8x8lib.cpp
2021-11-30 20:13:11 +08:00

1828 lines
53 KiB
C++

#include "U8x8lib.h"
/*=============================================*/
size_t U8X8::write(uint8_t v)
{
if ( v == '\n' )
{
uint8_t dy = u8x8_pgm_read(u8x8.font+3); /* new 2019 format */
ty+=dy;
tx=0;
}
else
{
uint8_t dx = u8x8_pgm_read(u8x8.font+2); /* new 2019 format */
u8x8_DrawGlyph(&u8x8, tx, ty, v);
tx+=dx;
}
return 1;
}
/*=============================================*/
/*=== ARDUINO GPIO & DELAY ===*/
#ifdef U8X8_USE_PINS
extern "C" uint8_t u8x8_gpio_and_delay_arduino(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
{
uint8_t i;
switch(msg)
{
case U8X8_MSG_GPIO_AND_DELAY_INIT:
for( i = 0; i < U8X8_PIN_CNT; i++ )
if ( u8x8->pins[i] != U8X8_PIN_NONE )
{
if ( i < U8X8_PIN_OUTPUT_CNT )
{
pinMode(u8x8->pins[i], OUTPUT);
}
else
{
#ifdef INPUT_PULLUP
pinMode(u8x8->pins[i], INPUT_PULLUP);
#else
pinMode(u8x8->pins[i], OUTPUT);
digitalWrite(u8x8->pins[i], 1);
#endif
}
}
break;
#ifndef __AVR__
/* this case is not compiled for any AVR, because AVR uC are so slow */
/* that this delay does not matter */
case U8X8_MSG_DELAY_NANO:
delayMicroseconds(arg_int==0?0:1);
break;
#endif
case U8X8_MSG_DELAY_10MICRO:
/* not used at the moment */
break;
case U8X8_MSG_DELAY_100NANO:
/* not used at the moment */
break;
case U8X8_MSG_DELAY_MILLI:
delay(arg_int);
break;
case U8X8_MSG_DELAY_I2C:
/* arg_int is 1 or 4: 100KHz (5us) or 400KHz (1.25us) */
delayMicroseconds(arg_int<=2?5:2);
break;
case U8X8_MSG_GPIO_I2C_CLOCK:
case U8X8_MSG_GPIO_I2C_DATA:
if ( arg_int == 0 )
{
pinMode(u8x8_GetPinValue(u8x8, msg), OUTPUT);
digitalWrite(u8x8_GetPinValue(u8x8, msg), 0);
}
else
{
#ifdef INPUT_PULLUP
pinMode(u8x8_GetPinValue(u8x8, msg), INPUT_PULLUP);
#else
pinMode(u8x8_GetPinValue(u8x8, msg), OUTPUT);
digitalWrite(u8x8_GetPinValue(u8x8, msg), 1);
#endif
}
break;
default:
if ( msg >= U8X8_MSG_GPIO(0) )
{
i = u8x8_GetPinValue(u8x8, msg);
if ( i != U8X8_PIN_NONE )
{
if ( u8x8_GetPinIndex(u8x8, msg) < U8X8_PIN_OUTPUT_CNT )
{
digitalWrite(i, arg_int);
}
else
{
if ( u8x8_GetPinIndex(u8x8, msg) == U8X8_PIN_OUTPUT_CNT )
{
// call yield() for the first pin only, u8x8 will always request all the pins, so this should be ok
yield();
}
u8x8_SetGPIOResult(u8x8, digitalRead(i) == 0 ? 0 : 1);
}
}
break;
}
return 0;
}
return 1;
}
#endif // U8X8_USE_PINS
/*=============================================*/
/*=== 3 WIRE SOFTWARE SPI ===*/
/*
replacement for a more faster u8x8_byte_3wire_sw_spi
in general u8x8_byte_3wire_sw_spi could be a fallback:
uint8_t u8x8_byte_arduino_3wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_3wire_sw_spi(u8x8, msg,arg_int, arg_ptr);
}
*/
#ifndef __AVR_ARCH__
#define __AVR_ARCH__ 0
#endif
#if !defined(U8X8_USE_PINS)
/* no pin information (very strange), so fallback */
uint8_t u8x8_byte_arduino_3wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_3wire_sw_spi(u8x8, msg,arg_int, arg_ptr);
}
#elif __AVR_ARCH__ == 4 || __AVR_ARCH__ == 5 || __AVR_ARCH__ == 51 || __AVR_ARCH__ == 6 || __AVR_ARCH__ == 103
/* this function completly replaces u8x8_byte_4wire_sw_spi*/
extern "C" uint8_t u8x8_byte_arduino_3wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
uint8_t i;
uint8_t takeover_edge = u8x8_GetSPIClockPhase(u8x8);
uint16_t b;
uint8_t *data;
/* the following static vars are recalculated in U8X8_MSG_BYTE_START_TRANSFER */
/* so, it should be possible to use multiple displays with different pins */
static volatile uint8_t *arduino_clock_port;
static uint8_t arduino_clock_mask;
static uint8_t arduino_clock_n_mask;
static volatile uint8_t *arduino_data_port;
static uint8_t arduino_data_mask;
static uint8_t arduino_data_n_mask;
static uint8_t last_dc;
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
data = (uint8_t *)arg_ptr;
if ( takeover_edge == 0 )
{
while( arg_int > 0 )
{
b = *data;
if ( last_dc != 0 )
b |= 256;
data++;
arg_int--;
/* issue 156, check for speed */
#if F_CPU <= 17000000
if ( b == 0 )
{
*arduino_data_port &= arduino_data_n_mask;
for( i = 0; i < 9; i++ )
{
*arduino_clock_port |= arduino_clock_mask;
*arduino_clock_port &= arduino_clock_n_mask;
}
}
else
#endif
{
for( i = 0; i < 9; i++ )
{
if ( b & 256 )
*arduino_data_port |= arduino_data_mask;
else
*arduino_data_port &= arduino_data_n_mask;
*arduino_clock_port |= arduino_clock_mask;
b <<= 1;
*arduino_clock_port &= arduino_clock_n_mask;
}
}
}
}
else
{
while( arg_int > 0 )
{
b = *data;
if ( last_dc != 0 )
b |= 256;
data++;
arg_int--;
/* issue 156, check for speed */
#if F_CPU <= 17000000
if ( b == 0 )
{
*arduino_data_port &= arduino_data_n_mask;
for( i = 0; i < 9; i++ )
{
*arduino_clock_port &= arduino_clock_n_mask;
*arduino_clock_port |= arduino_clock_mask;
}
}
else
#endif
{
for( i = 0; i < 9; i++ )
{
if ( b & 256 )
*arduino_data_port |= arduino_data_mask;
else
*arduino_data_port &= arduino_data_n_mask;
*arduino_clock_port &= arduino_clock_n_mask;
b <<= 1;
*arduino_clock_port |= arduino_clock_mask;
}
}
}
}
break;
case U8X8_MSG_BYTE_INIT:
/* disable chipselect */
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
/* no wait required here */
/* for SPI: setup correct level of the clock signal */
u8x8_gpio_SetSPIClock(u8x8, u8x8_GetSPIClockPhase(u8x8));
break;
case U8X8_MSG_BYTE_SET_DC:
last_dc = arg_int;
break;
case U8X8_MSG_BYTE_START_TRANSFER:
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
/* there is no consistency checking for u8x8->pins[U8X8_PIN_SPI_CLOCK] */
arduino_clock_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_CLOCK]));
arduino_clock_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_SPI_CLOCK]);
arduino_clock_n_mask = ~arduino_clock_mask;
/* there is no consistency checking for u8x8->pins[U8X8_PIN_SPI_DATA] */
arduino_data_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_DATA]));
arduino_data_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_SPI_DATA]);
arduino_data_n_mask = ~arduino_data_mask;
break;
case U8X8_MSG_BYTE_END_TRANSFER:
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
break;
default:
return 0;
}
return 1;
}
#else
/* fallback */
uint8_t u8x8_byte_arduino_3wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_3wire_sw_spi(u8x8, msg,arg_int, arg_ptr);
}
#endif
/*=============================================*/
/*=== 4 WIRE SOFTWARE SPI ===*/
/*
replacement for a more faster u8x8_byte_4wire_sw_spi
in general u8x8_byte_4wire_sw_spi could be a fallback:
uint8_t u8x8_byte_arduino_4wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_4wire_sw_spi(u8x8, msg,arg_int, arg_ptr);
}
*/
#ifndef __AVR_ARCH__
#define __AVR_ARCH__ 0
#endif
#if !defined(U8X8_USE_PINS)
/* no pin information (very strange), so fallback */
uint8_t u8x8_byte_arduino_4wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_4wire_sw_spi(u8x8, msg,arg_int, arg_ptr);
}
#elif __AVR_ARCH__ == 4 || __AVR_ARCH__ == 5 || __AVR_ARCH__ == 51 || __AVR_ARCH__ == 6 || __AVR_ARCH__ == 103
/* this function completly replaces u8x8_byte_4wire_sw_spi*/
extern "C" uint8_t u8x8_byte_arduino_4wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
uint8_t SREG_backup;
uint8_t i, b;
uint8_t *data;
uint8_t takeover_edge = u8x8_GetSPIClockPhase(u8x8);
//uint8_t not_takeover_edge = 1 - takeover_edge;
/* the following static vars are recalculated in U8X8_MSG_BYTE_START_TRANSFER */
/* so, it should be possible to use multiple displays with different pins */
static volatile uint8_t *arduino_clock_port;
static uint8_t arduino_clock_mask;
static uint8_t arduino_clock_n_mask;
static volatile uint8_t *arduino_data_port;
static uint8_t arduino_data_mask;
static uint8_t arduino_data_n_mask;
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
data = (uint8_t *)arg_ptr;
if ( takeover_edge == 0 )
{
while( arg_int > 0 )
{
b = *data;
data++;
arg_int--;
SREG_backup = SREG; cli();
/* issue 156, check for speed */
#if F_CPU <= 17000000
if ( b == 0 )
{
*arduino_data_port &= arduino_data_n_mask;
for( i = 0; i < 8; i++ )
{
*arduino_clock_port |= arduino_clock_mask;
*arduino_clock_port &= arduino_clock_n_mask;
}
}
else
#endif
{
for( i = 0; i < 8; i++ )
{
if ( b & 128 )
*arduino_data_port |= arduino_data_mask;
else
*arduino_data_port &= arduino_data_n_mask;
*arduino_clock_port |= arduino_clock_mask;
b <<= 1;
*arduino_clock_port &= arduino_clock_n_mask;
}
}
SREG = SREG_backup;
}
}
else
{
while( arg_int > 0 )
{
b = *data;
data++;
arg_int--;
SREG_backup = SREG; cli();
/* issue 156, check for speed */
#if F_CPU <= 17000000
if ( b == 0 )
{
*arduino_data_port &= arduino_data_n_mask;
for( i = 0; i < 8; i++ )
{
*arduino_clock_port &= arduino_clock_n_mask;
*arduino_clock_port |= arduino_clock_mask;
}
}
else
#endif
{
for( i = 0; i < 8; i++ )
{
if ( b & 128 )
*arduino_data_port |= arduino_data_mask;
else
*arduino_data_port &= arduino_data_n_mask;
*arduino_clock_port &= arduino_clock_n_mask;
b <<= 1;
*arduino_clock_port |= arduino_clock_mask;
}
}
SREG = SREG_backup;
}
}
break;
case U8X8_MSG_BYTE_INIT:
/* disable chipselect */
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
/* no wait required here */
/* for SPI: setup correct level of the clock signal */
u8x8_gpio_SetSPIClock(u8x8, u8x8_GetSPIClockPhase(u8x8));
break;
case U8X8_MSG_BYTE_SET_DC:
u8x8_gpio_SetDC(u8x8, arg_int);
break;
case U8X8_MSG_BYTE_START_TRANSFER:
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
/* there is no consistency checking for u8x8->pins[U8X8_PIN_SPI_CLOCK] */
arduino_clock_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_CLOCK]));
arduino_clock_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_SPI_CLOCK]);
arduino_clock_n_mask = ~arduino_clock_mask;
/* there is no consistency checking for u8x8->pins[U8X8_PIN_SPI_DATA] */
arduino_data_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_DATA]));
arduino_data_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_SPI_DATA]);
arduino_data_n_mask = ~arduino_data_mask;
break;
case U8X8_MSG_BYTE_END_TRANSFER:
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
break;
default:
return 0;
}
return 1;
}
#elif defined(__SAM3X8E__) /* Arduino DUE */
/* this function completly replaces u8x8_byte_4wire_sw_spi*/
extern "C" uint8_t u8x8_byte_arduino_4wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
uint8_t i, b;
uint16_t us = ((u8x8->display_info->sck_pulse_width_ns + 999)/1000);
uint8_t *data;
uint8_t takeover_edge = u8x8_GetSPIClockPhase(u8x8);
//uint8_t not_takeover_edge = 1 - takeover_edge;
/* the following static vars are recalculated in U8X8_MSG_BYTE_START_TRANSFER */
/* so, it should be possible to use multiple displays with different pins */
/*
static volatile uint32_t *arduino_clock_port;
static uint32_t arduino_clock_mask;
static uint32_t arduino_clock_n_mask;
static volatile uint32_t *arduino_data_port;
static uint32_t arduino_data_mask;
static uint32_t arduino_data_n_mask;
*/
static WoReg *arduinoSetClockPort, *arduinoUnsetClockPort;
static uint32_t arduino_clock_mask;
static WoReg *arduinoSetDataPort, *arduinoUnsetDataPort;
static uint32_t arduino_data_mask;
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
data = (uint8_t *)arg_ptr;
if ( takeover_edge == 0 )
{
while( arg_int > 0 )
{
b = *data;
data++;
arg_int--;
{
for( i = 0; i < 8; i++ )
{
/*
if ( b & 128 )
*arduino_data_port |= arduino_data_mask;
else
*arduino_data_port &= arduino_data_n_mask;
*/
if (b & 128)
*arduinoSetDataPort = arduino_data_mask;
else
*arduinoUnsetDataPort = arduino_data_mask;
//delayMicroseconds(us);
//*arduino_clock_port |= arduino_clock_mask;
*arduinoSetClockPort = arduino_clock_mask;
b <<= 1;
delayMicroseconds(us);
//*arduino_clock_port &= arduino_clock_n_mask;
*arduinoUnsetClockPort = arduino_clock_mask;
}
}
}
}
else
{
while( arg_int > 0 )
{
b = *data;
data++;
arg_int--;
{
for( i = 0; i < 8; i++ )
{
/*
if ( b & 128 )
*arduino_data_port |= arduino_data_mask;
else
*arduino_data_port &= arduino_data_n_mask;
*/
if (b & 128)
*arduinoSetDataPort = arduino_data_mask;
else
*arduinoUnsetDataPort = arduino_data_mask;
//delayMicroseconds(us);
//*arduino_clock_port &= arduino_clock_n_mask;
*arduinoUnsetClockPort = arduino_clock_mask;
b <<= 1;
delayMicroseconds(us);
//*arduino_clock_port |= arduino_clock_mask;
*arduinoSetClockPort = arduino_clock_mask;
}
}
}
}
break;
case U8X8_MSG_BYTE_INIT:
/* disable chipselect */
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
/* no wait required here */
/* for SPI: setup correct level of the clock signal */
u8x8_gpio_SetSPIClock(u8x8, u8x8_GetSPIClockPhase(u8x8));
break;
case U8X8_MSG_BYTE_SET_DC:
u8x8_gpio_SetDC(u8x8, arg_int);
break;
case U8X8_MSG_BYTE_START_TRANSFER:
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
/* there is no consistency checking for u8x8->pins[U8X8_PIN_SPI_CLOCK] */
/*
arduino_clock_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_CLOCK]));
arduino_clock_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_SPI_CLOCK]);
arduino_clock_n_mask = ~arduino_clock_mask;
arduino_data_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_DATA]));
arduino_data_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_SPI_DATA]);
arduino_data_n_mask = ~arduino_data_mask;
*/
arduinoSetClockPort = &digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_CLOCK])->PIO_SODR;
arduinoUnsetClockPort = &digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_CLOCK])->PIO_CODR;
arduino_clock_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_SPI_CLOCK]);
arduinoSetDataPort = &digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_DATA])->PIO_SODR;
arduinoUnsetDataPort = &digitalPinToPort(u8x8->pins[U8X8_PIN_SPI_DATA])->PIO_CODR;
arduino_data_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_SPI_DATA]);
break;
case U8X8_MSG_BYTE_END_TRANSFER:
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
break;
default:
return 0;
}
return 1;
}
#else
/* fallback */
uint8_t u8x8_byte_arduino_4wire_sw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_4wire_sw_spi(u8x8, msg,arg_int, arg_ptr);
}
#endif
/*=============================================*/
/*=== 3 WIRE HARDWARE SPI with 8 bit HW SPI Subsystem ===*/
/*
references:
https://github.com/olikraus/ucglib/blob/master/cppsrc/Ucglib.cpp#L581
https://github.com/olikraus/u8g2/issues/1041
*/
static uint8_t arduino_hw_spi_3w_buffer[9];
static uint8_t arduino_hw_spi_3w_bytepos;
static uint16_t arduino_hw_spi_3w_dc; // 0 = dc==0, 256 = dc==1
static void arduino_hw_spi_3w_init()
{
memset(arduino_hw_spi_3w_buffer, 0, 9);
arduino_hw_spi_3w_bytepos = 0;
}
static void arduino_hw_spi_3w_flush(void)
{
#ifdef U8X8_HAVE_HW_SPI
uint8_t i;
for(i = 0; i <= arduino_hw_spi_3w_bytepos; i++)
{
SPI.transfer(arduino_hw_spi_3w_buffer[i]);
}
#endif
}
static void arduino_hw_spi_3w_sendbyte(uint8_t data)
{
static union { uint16_t val; struct { uint8_t lsb; uint8_t msb; }; } data16; // well well, not legal ISO 9899 code
data16.val = (arduino_hw_spi_3w_dc + data) << (7 - arduino_hw_spi_3w_bytepos);
#ifdef __BYTE_ORDER__
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
arduino_hw_spi_3w_buffer[arduino_hw_spi_3w_bytepos] |= data16.msb;
++arduino_hw_spi_3w_bytepos;
arduino_hw_spi_3w_buffer[arduino_hw_spi_3w_bytepos] |= data16.lsb;
#else
arduino_hw_spi_3w_buffer[arduino_hw_spi_3w_bytepos] |= data16.lsb;
++arduino_hw_spi_3w_bytepos;
arduino_hw_spi_3w_buffer[arduino_hw_spi_3w_bytepos] |= data16.msb;
#endif
#else // __BYTE_ORDER__ not defined (no gcc)
// assume little endian
arduino_hw_spi_3w_buffer[arduino_hw_spi_3w_bytepos] |= data16.msb;
++arduino_hw_spi_3w_bytepos;
arduino_hw_spi_3w_buffer[arduino_hw_spi_3w_bytepos] |= data16.lsb;
#endif
if (arduino_hw_spi_3w_bytepos == 8)
{
arduino_hw_spi_3w_flush();
arduino_hw_spi_3w_init();
}
}
extern "C" uint8_t u8x8_byte_arduino_3wire_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
#ifdef U8X8_HAVE_HW_SPI
uint8_t *data;
uint8_t internal_spi_mode;
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
data = (uint8_t *)arg_ptr;
while(arg_int > 0) {
arduino_hw_spi_3w_sendbyte((uint8_t)*data);
data++;
arg_int--;
}
break;
case U8X8_MSG_BYTE_INIT:
if ( u8x8->bus_clock == 0 ) /* issue 769 */
u8x8->bus_clock = u8x8->display_info->sck_clock_hz;
/* disable chipselect */
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
#if defined(ESP_PLATFORM) || defined(ARDUINO_ARCH_ESP32)
/* ESP32 has the following begin: SPI.begin(int8_t sck=SCK, int8_t miso=MISO, int8_t mosi=MOSI, int8_t ss=-1); */
/* not sure about ESP8266 */
if ( u8x8->pins[U8X8_PIN_I2C_CLOCK] != U8X8_PIN_NONE && u8x8->pins[U8X8_PIN_I2C_DATA] != U8X8_PIN_NONE )
{
/* SPI.begin(int8_t sck=SCK, int8_t miso=MISO, int8_t mosi=MOSI, int8_t ss=-1); */
/* actually MISO is not used, but what else could be used here??? */
SPI.begin(u8x8->pins[U8X8_PIN_I2C_CLOCK], MISO, u8x8->pins[U8X8_PIN_I2C_DATA]);
}
else
{
SPI.begin();
}
#else
SPI.begin();
#endif
break;
case U8X8_MSG_BYTE_SET_DC:
arduino_hw_spi_3w_dc = arg_int ? 256 : 0;
break;
case U8X8_MSG_BYTE_START_TRANSFER:
/* SPI mode has to be mapped to the mode of the current controller;
at least Uno, Due, 101 have different SPI_MODEx values */
internal_spi_mode = 0;
switch(u8x8->display_info->spi_mode) {
case 0: internal_spi_mode = SPI_MODE0; break;
case 1: internal_spi_mode = SPI_MODE1; break;
case 2: internal_spi_mode = SPI_MODE2; break;
case 3: internal_spi_mode = SPI_MODE3; break;
}
#if ARDUINO >= 10600
SPI.beginTransaction(
SPISettings(u8x8->bus_clock, MSBFIRST, internal_spi_mode));
#else
SPI.begin();
if (u8x8->display_info->sck_pulse_width_ns < 70)
SPI.setClockDivider(SPI_CLOCK_DIV2);
else if (u8x8->display_info->sck_pulse_width_ns < 140)
SPI.setClockDivider(SPI_CLOCK_DIV4);
else
SPI.setClockDivider(SPI_CLOCK_DIV8);
SPI.setDataMode(internal_spi_mode);
SPI.setBitOrder(MSBFIRST);
#endif
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);
u8x8->gpio_and_delay_cb(
u8x8,
U8X8_MSG_DELAY_NANO,
u8x8->display_info->post_chip_enable_wait_ns,
NULL);
arduino_hw_spi_3w_init();
break;
case U8X8_MSG_BYTE_END_TRANSFER:
u8x8->gpio_and_delay_cb(
u8x8,
U8X8_MSG_DELAY_NANO,
u8x8->display_info->pre_chip_disable_wait_ns,
NULL);
if (arduino_hw_spi_3w_bytepos)
arduino_hw_spi_3w_flush();
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
#if ARDUINO >= 10600
SPI.endTransaction();
#else
SPI.end();
#endif
break;
default:
return 0;
}
#endif // U8X8_HAVE_HW_SPI
return 1;
}
/*=============================================*/
/*=== 4 WIRE HARDWARE SPI ===*/
#ifdef U8X8_USE_PINS
extern "C" uint8_t u8x8_byte_arduino_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
#ifdef U8X8_HAVE_HW_SPI
uint8_t *data;
uint8_t internal_spi_mode;
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
// 1.6.5 offers a block transfer, but the problem is, that the
// buffer is overwritten with the incoming data
// so it can not be used...
// SPI.transfer((uint8_t *)arg_ptr, arg_int);
data = (uint8_t *)arg_ptr;
while( arg_int > 0 )
{
SPI.transfer((uint8_t)*data);
data++;
arg_int--;
}
break;
case U8X8_MSG_BYTE_INIT:
if ( u8x8->bus_clock == 0 ) /* issue 769 */
u8x8->bus_clock = u8x8->display_info->sck_clock_hz;
/* disable chipselect */
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
/* no wait required here */
/* for SPI: setup correct level of the clock signal */
// removed, use SPI.begin() instead: pinMode(11, OUTPUT);
// removed, use SPI.begin() instead: pinMode(13, OUTPUT);
// removed, use SPI.begin() instead: digitalWrite(13, u8x8_GetSPIClockPhase(u8x8));
/* setup hardware with SPI.begin() instead of previous digitalWrite() and pinMode() calls */
/* issue #377 */
/* issue #378: removed ESP8266 support, which is implemented differently */
#if defined(ESP_PLATFORM) || defined(ARDUINO_ARCH_ESP32)
/* ESP32 has the following begin: SPI.begin(int8_t sck=SCK, int8_t miso=MISO, int8_t mosi=MOSI, int8_t ss=-1); */
/* not sure about ESP8266 */
if ( u8x8->pins[U8X8_PIN_I2C_CLOCK] != U8X8_PIN_NONE && u8x8->pins[U8X8_PIN_I2C_DATA] != U8X8_PIN_NONE )
{
/* SPI.begin(int8_t sck=SCK, int8_t miso=MISO, int8_t mosi=MOSI, int8_t ss=-1); */
/* actually MISO is not used, but what else could be used here??? */
SPI.begin(u8x8->pins[U8X8_PIN_I2C_CLOCK], MISO, u8x8->pins[U8X8_PIN_I2C_DATA]);
}
else
{
SPI.begin();
}
#else
SPI.begin();
#endif
break;
case U8X8_MSG_BYTE_SET_DC:
u8x8_gpio_SetDC(u8x8, arg_int);
break;
case U8X8_MSG_BYTE_START_TRANSFER:
/* SPI mode has to be mapped to the mode of the current controller, at least Uno, Due, 101 have different SPI_MODEx values */
internal_spi_mode = 0;
switch(u8x8->display_info->spi_mode)
{
case 0: internal_spi_mode = SPI_MODE0; break;
case 1: internal_spi_mode = SPI_MODE1; break;
case 2: internal_spi_mode = SPI_MODE2; break;
case 3: internal_spi_mode = SPI_MODE3; break;
}
#if ARDUINO >= 10600
SPI.beginTransaction(SPISettings(u8x8->bus_clock, MSBFIRST, internal_spi_mode));
#else
SPI.begin();
if ( u8x8->display_info->sck_pulse_width_ns < 70 )
SPI.setClockDivider( SPI_CLOCK_DIV2 );
else if ( u8x8->display_info->sck_pulse_width_ns < 140 )
SPI.setClockDivider( SPI_CLOCK_DIV4 );
else
SPI.setClockDivider( SPI_CLOCK_DIV8 );
SPI.setDataMode(internal_spi_mode);
SPI.setBitOrder(MSBFIRST);
#endif
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
break;
case U8X8_MSG_BYTE_END_TRANSFER:
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
#if ARDUINO >= 10600
SPI.endTransaction();
#else
SPI.end();
#endif
break;
default:
return 0;
}
#else /* U8X8_HAVE_HW_SPI */
#endif /* U8X8_HAVE_HW_SPI */
return 1;
}
/* issue #244 */
extern "C" uint8_t u8x8_byte_arduino_2nd_hw_spi(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
{
#ifdef U8X8_HAVE_2ND_HW_SPI
uint8_t *data;
uint8_t internal_spi_mode;
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
// 1.6.5 offers a block transfer, but the problem is, that the
// buffer is overwritten with the incoming data
// so it can not be used...
// SPI.transfer((uint8_t *)arg_ptr, arg_int);
data = (uint8_t *)arg_ptr;
while( arg_int > 0 )
{
SPI1.transfer((uint8_t)*data);
data++;
arg_int--;
}
break;
case U8X8_MSG_BYTE_INIT:
if ( u8x8->bus_clock == 0 ) /* issue 769 */
u8x8->bus_clock = u8x8->display_info->sck_clock_hz;
/* disable chipselect */
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
/* no wait required here */
/* for SPI1: setup correct level of the clock signal */
// removed, use SPI.begin() instead: pinMode(11, OUTPUT);
// removed, use SPI.begin() instead: pinMode(13, OUTPUT);
// removed, use SPI.begin() instead: digitalWrite(13, u8x8_GetSPIClockPhase(u8x8));
/* setup hardware with SPI.begin() instead of previous digitalWrite() and pinMode() calls */
SPI1.begin();
break;
case U8X8_MSG_BYTE_SET_DC:
u8x8_gpio_SetDC(u8x8, arg_int);
break;
case U8X8_MSG_BYTE_START_TRANSFER:
/* SPI1 mode has to be mapped to the mode of the current controller, at least Uno, Due, 101 have different SPI_MODEx values */
internal_spi_mode = 0;
switch(u8x8->display_info->spi_mode)
{
case 0: internal_spi_mode = SPI_MODE0; break;
case 1: internal_spi_mode = SPI_MODE1; break;
case 2: internal_spi_mode = SPI_MODE2; break;
case 3: internal_spi_mode = SPI_MODE3; break;
}
#if ARDUINO >= 10600
SPI1.beginTransaction(SPISettings(u8x8->bus_clock, MSBFIRST, internal_spi_mode));
#else
SPI1.begin();
if ( u8x8->display_info->sck_pulse_width_ns < 70 )
SPI1.setClockDivider( SPI_CLOCK_DIV2 );
else if ( u8x8->display_info->sck_pulse_width_ns < 140 )
SPI1.setClockDivider( SPI_CLOCK_DIV4 );
else
SPI1.setClockDivider( SPI_CLOCK_DIV8 );
SPI1.setDataMode(internal_spi_mode);
SPI1.setBitOrder(MSBFIRST);
#endif
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
break;
case U8X8_MSG_BYTE_END_TRANSFER:
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
#if ARDUINO >= 10600
SPI1.endTransaction();
#else
SPI1.end();
#endif
break;
default:
return 0;
}
#else
#endif
return 1;
}
/*=============================================*/
/* fast SW I2C for AVR uC */
#if !defined(U8X8_USE_PINS)
/* no pin information (very strange), so fallback */
extern "C" uint8_t u8x8_byte_arduino_sw_i2c(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
{
return u8x8_byte_sw_i2c(u8x8, msg,arg_int, arg_ptr);
}
#elif !defined(U8X8_USE_ARDUINO_AVR_SW_I2C_OPTIMIZATION)
extern "C" uint8_t u8x8_byte_arduino_sw_i2c(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
{
return u8x8_byte_sw_i2c(u8x8, msg,arg_int, arg_ptr);
}
#elif __AVR_ARCH__ == 4 || __AVR_ARCH__ == 5 || __AVR_ARCH__ == 51 || __AVR_ARCH__ == 6 || __AVR_ARCH__ == 103
/* the following static vars are recalculated in U8X8_MSG_BYTE_START_TRANSFER */
/* so, it should be possible to use multiple displays with different pins */
static volatile uint8_t *arduino_i2c_clock_port;
static uint8_t arduino_i2c_clock_mask;
static uint8_t arduino_i2c_clock_n_mask;
static volatile uint8_t *arduino_i2c_data_port;
static uint8_t arduino_i2c_data_mask;
static uint8_t arduino_i2c_data_n_mask;
/*
software i2c,
ignores ACK response (which is anyway not provided by some displays)
also does not allow reading from the device
*/
static void i2c_delay(u8x8_t *u8x8) U8X8_NOINLINE;
static void i2c_delay(u8x8_t *u8x8)
{
//u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_10MICRO, u8x8->display_info->i2c_bus_clock_100kHz);
u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_I2C, u8x8->display_info->i2c_bus_clock_100kHz);
}
static void i2c_init(u8x8_t *u8x8)
{
*arduino_i2c_clock_port |= arduino_i2c_clock_mask;
*arduino_i2c_data_port |= arduino_i2c_data_mask;
i2c_delay(u8x8);
}
/* actually, the scl line is not observed, so this procedure does not return a value */
static void i2c_read_scl_and_delay(u8x8_t *u8x8)
{
/* set as input (line will be high) */
*arduino_i2c_clock_port |= arduino_i2c_clock_mask;
i2c_delay(u8x8);
}
static void i2c_clear_scl(u8x8_t *u8x8)
{
*arduino_i2c_clock_port &= arduino_i2c_clock_n_mask;
}
static void i2c_read_sda(u8x8_t *u8x8)
{
/* set as input (line will be high) */
*arduino_i2c_data_port |= arduino_i2c_data_mask;
}
static void i2c_clear_sda(u8x8_t *u8x8)
{
/* set open collector and drive low */
*arduino_i2c_data_port &= arduino_i2c_data_n_mask;
}
static void i2c_start(u8x8_t *u8x8)
{
if ( u8x8->i2c_started != 0 )
{
/* if already started: do restart */
i2c_read_sda(u8x8); /* SDA = 1 */
i2c_delay(u8x8);
i2c_read_scl_and_delay(u8x8);
}
i2c_read_sda(u8x8);
/* send the start condition, both lines go from 1 to 0 */
i2c_clear_sda(u8x8);
i2c_delay(u8x8);
i2c_clear_scl(u8x8);
u8x8->i2c_started = 1;
}
static void i2c_stop(u8x8_t *u8x8)
{
/* set SDA to 0 */
i2c_clear_sda(u8x8);
i2c_delay(u8x8);
/* now release all lines */
i2c_read_scl_and_delay(u8x8);
/* set SDA to 1 */
i2c_read_sda(u8x8);
i2c_delay(u8x8);
u8x8->i2c_started = 0;
}
static void i2c_write_bit(u8x8_t *u8x8, uint8_t val)
{
if (val)
i2c_read_sda(u8x8);
else
i2c_clear_sda(u8x8);
i2c_delay(u8x8);
i2c_read_scl_and_delay(u8x8);
i2c_clear_scl(u8x8);
}
static void i2c_read_bit(u8x8_t *u8x8)
{
//uint8_t val;
/* do not drive SDA */
i2c_read_sda(u8x8);
i2c_delay(u8x8);
i2c_read_scl_and_delay(u8x8);
i2c_read_sda(u8x8);
i2c_delay(u8x8);
i2c_clear_scl(u8x8);
//return val;
}
static void i2c_write_byte(u8x8_t *u8x8, uint8_t b)
{
i2c_write_bit(u8x8, b & 128);
i2c_write_bit(u8x8, b & 64);
i2c_write_bit(u8x8, b & 32);
i2c_write_bit(u8x8, b & 16);
i2c_write_bit(u8x8, b & 8);
i2c_write_bit(u8x8, b & 4);
i2c_write_bit(u8x8, b & 2);
i2c_write_bit(u8x8, b & 1);
/* read ack from client */
/* 0: ack was given by client */
/* 1: nothing happend during ack cycle */
i2c_read_bit(u8x8);
}
extern "C" uint8_t u8x8_byte_arduino_sw_i2c(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
{
uint8_t *data;
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
data = (uint8_t *)arg_ptr;
while( arg_int > 0 )
{
i2c_write_byte(u8x8, *data);
data++;
arg_int--;
}
break;
case U8X8_MSG_BYTE_INIT:
pinMode(u8x8->pins[U8X8_PIN_I2C_CLOCK], OUTPUT);
digitalWrite(u8x8->pins[U8X8_PIN_I2C_CLOCK], 1);
pinMode(u8x8->pins[U8X8_PIN_I2C_DATA], OUTPUT);
digitalWrite(u8x8->pins[U8X8_PIN_I2C_DATA], 1);
i2c_init(u8x8);
break;
case U8X8_MSG_BYTE_SET_DC:
break;
case U8X8_MSG_BYTE_START_TRANSFER:
/* there is no consistency checking for u8x8->pins[U8X8_PIN_I2C_CLOCK] */
arduino_i2c_clock_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_I2C_CLOCK]));
arduino_i2c_clock_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_I2C_CLOCK]);
arduino_i2c_clock_n_mask = ~arduino_i2c_clock_mask;
/* there is no consistency checking for u8x8->pins[U8X8_PIN_I2C_DATA] */
arduino_i2c_data_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_I2C_DATA]));
arduino_i2c_data_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_I2C_DATA]);
arduino_i2c_data_n_mask = ~arduino_i2c_data_mask;
i2c_start(u8x8);
i2c_write_byte(u8x8, u8x8_GetI2CAddress(u8x8));
break;
case U8X8_MSG_BYTE_END_TRANSFER:
i2c_stop(u8x8);
break;
default:
return 0;
}
return 1;
}
#else
/* not AVR architecture, fallback */
extern "C" uint8_t u8x8_byte_arduino_sw_i2c(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
{
return u8x8_byte_sw_i2c(u8x8, msg,arg_int, arg_ptr);
}
#endif
/*=============================================*/
/*=== HARDWARE I2C ===*/
extern "C" uint8_t u8x8_byte_arduino_hw_i2c(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
{
#ifdef U8X8_HAVE_HW_I2C
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
Wire.write((uint8_t *)arg_ptr, (int)arg_int);
break;
case U8X8_MSG_BYTE_INIT:
if ( u8x8->bus_clock == 0 ) /* issue 769 */
u8x8->bus_clock = u8x8->display_info->i2c_bus_clock_100kHz * 100000UL;
#if defined(ESP8266) || defined(ARDUINO_ARCH_ESP8266) || defined(ESP_PLATFORM) || defined(ARDUINO_ARCH_ESP32)
/* for ESP8266/ESP32, Wire.begin has two more arguments: clock and data */
if ( u8x8->pins[U8X8_PIN_I2C_CLOCK] != U8X8_PIN_NONE && u8x8->pins[U8X8_PIN_I2C_DATA] != U8X8_PIN_NONE )
{
// second argument for the wire lib is the clock pin. In u8g2, the first argument of the clock pin in the clock/data pair
Wire.begin(u8x8->pins[U8X8_PIN_I2C_DATA] , u8x8->pins[U8X8_PIN_I2C_CLOCK]);
}
else
{
Wire.begin();
}
#else
Wire.begin();
#endif
break;
case U8X8_MSG_BYTE_SET_DC:
break;
case U8X8_MSG_BYTE_START_TRANSFER:
#if ARDUINO >= 10600
/* not sure when the setClock function was introduced, but it is there since 1.6.0 */
/* if there is any error with Wire.setClock() just remove this function call */
Wire.setClock(u8x8->bus_clock);
#endif
Wire.beginTransmission(u8x8_GetI2CAddress(u8x8)>>1);
break;
case U8X8_MSG_BYTE_END_TRANSFER:
Wire.endTransmission();
break;
default:
return 0;
}
#endif
return 1;
}
extern "C" uint8_t u8x8_byte_arduino_2nd_hw_i2c(U8X8_UNUSED u8x8_t *u8x8, U8X8_UNUSED uint8_t msg, U8X8_UNUSED uint8_t arg_int, U8X8_UNUSED void *arg_ptr)
{
#ifdef U8X8_HAVE_2ND_HW_I2C
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
Wire1.write((uint8_t *)arg_ptr, (int)arg_int);
break;
case U8X8_MSG_BYTE_INIT:
if ( u8x8->bus_clock == 0 ) /* issue 769 */
u8x8->bus_clock = u8x8->display_info->i2c_bus_clock_100kHz * 100000UL;
Wire1.begin();
break;
case U8X8_MSG_BYTE_SET_DC:
break;
case U8X8_MSG_BYTE_START_TRANSFER:
#if ARDUINO >= 10600
/* not sure when the setClock function was introduced, but it is there since 1.6.0 */
/* if there is any error with Wire.setClock() just remove this function call */
Wire1.setClock(u8x8->bus_clock);
#endif
Wire1.beginTransmission(u8x8_GetI2CAddress(u8x8)>>1);
break;
case U8X8_MSG_BYTE_END_TRANSFER:
Wire1.endTransmission();
break;
default:
return 0;
}
#endif
return 1;
}
#endif // U8X8_USE_PINS
/*=============================================*/
/*
replacement for a more faster u8x8_byte_8bit_8080mode
in general u8x8_byte_8bit_8080mode could be a fallback:
uint8_t u8x8_byte_arduino_8bit_8080mode(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_8bit_8080mode(u8x8, msg,arg_int, arg_ptr);
}
*/
#ifndef __AVR_ARCH__
#define __AVR_ARCH__ 0
#endif
#if !defined(U8X8_USE_PINS)
/* no pin information (very strange), so fallback */
extern "C" uint8_t u8x8_byte_arduino_8bit_8080mode(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_8bit_8080mode(u8x8, msg,arg_int, arg_ptr);
}
#elif __AVR_ARCH__ == 4 || __AVR_ARCH__ == 5 || __AVR_ARCH__ == 51 || __AVR_ARCH__ == 6 || __AVR_ARCH__ == 103
/* this function completly replaces u8x8_byte_8bit_8080mode*/
extern "C" uint8_t u8x8_byte_arduino_8bit_8080mode(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
uint8_t i, b;
uint8_t *data;
/* the following static vars are recalculated in U8X8_MSG_BYTE_START_TRANSFER */
/* so, it should be possible to use multiple displays with different pins */
static volatile uint8_t *arduino_e_port;
static volatile uint8_t arduino_e_mask;
static volatile uint8_t arduino_e_n_mask;
static volatile uint8_t *arduino_data_port[8];
static volatile uint8_t arduino_data_mask[8];
static volatile uint8_t arduino_data_n_mask[8];
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
data = (uint8_t *)arg_ptr;
while( arg_int > 0 )
{
b = *data;
data++;
arg_int--;
for( i = 0; i < 8; i++ )
{
if ( b & 1 )
*arduino_data_port[i] |= arduino_data_mask[i];
else
*arduino_data_port[i] &= arduino_data_n_mask[i];
b >>= 1;
}
*arduino_e_port &= arduino_e_n_mask;
/* AVR Architecture is very slow, extra call is not required */
//u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->sda_setup_time_ns);
u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->data_setup_time_ns);
*arduino_e_port |= arduino_e_mask;
/* AVR Architecture is very slow, extra call is not required */
//u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->sck_pulse_width_ns);
u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->write_pulse_width_ns);
}
break;
case U8X8_MSG_BYTE_INIT:
/* disable chipselect */
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
/* no wait required here */
/* ensure that the enable signal is high */
u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 1);
break;
case U8X8_MSG_BYTE_SET_DC:
u8x8_gpio_SetDC(u8x8, arg_int);
break;
case U8X8_MSG_BYTE_START_TRANSFER:
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_enable_level);
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
/* there is no consistency checking for u8x8->pins[U8X8_PIN_E] */
arduino_e_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_E]));
arduino_e_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_E]);
arduino_e_n_mask = ~arduino_e_mask;
/* there is no consistency checking for u8x8->pins[U8X8_PIN_D0] */
for( i = 0; i < 8; i++ )
{
arduino_data_port[i] = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_D0+i]));
arduino_data_mask[i] = digitalPinToBitMask(u8x8->pins[U8X8_PIN_D0+i]);
arduino_data_n_mask[i] = ~arduino_data_mask[i];
}
break;
case U8X8_MSG_BYTE_END_TRANSFER:
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
break;
default:
return 0;
}
return 1;
}
#else
/* fallback */
extern "C" uint8_t u8x8_byte_arduino_8bit_8080mode(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_8bit_8080mode(u8x8, msg,arg_int, arg_ptr);
}
#endif
/*=============================================*/
/*
replacement for a more faster u8x8_byte_ks0108
in general u8x8_byte_ks0108 could be a fallback:
uint8_t u8x8_byte_arduino_ks0108(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_ks0108(u8x8, msg,arg_int, arg_ptr);
}
*/
#ifndef __AVR_ARCH__
#define __AVR_ARCH__ 0
#endif
#if !defined(U8X8_USE_PINS)
/* no pin information (very strange), so fallback */
extern "C" uint8_t u8x8_byte_arduino_ks0108(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_ks0108(u8x8, msg,arg_int, arg_ptr);
}
#elif __AVR_ARCH__ == 4 || __AVR_ARCH__ == 5 || __AVR_ARCH__ == 51 || __AVR_ARCH__ == 6 || __AVR_ARCH__ == 103
/* this function completly replaces u8x8_byte_ks0108*/
extern "C" uint8_t u8x8_byte_arduino_ks0108(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
uint8_t i, b;
uint8_t *data;
/* the following static vars are recalculated in U8X8_MSG_BYTE_START_TRANSFER */
/* so, it should be possible to use multiple displays with different pins */
static volatile uint8_t *arduino_e_port;
static volatile uint8_t arduino_e_mask;
static volatile uint8_t arduino_e_n_mask;
static volatile uint8_t *arduino_data_port[8];
static volatile uint8_t arduino_data_mask[8];
static volatile uint8_t arduino_data_n_mask[8];
switch(msg)
{
case U8X8_MSG_BYTE_SEND:
data = (uint8_t *)arg_ptr;
while( arg_int > 0 )
{
b = *data;
data++;
arg_int--;
for( i = 0; i < 8; i++ )
{
if ( b & 1 )
*arduino_data_port[i] |= arduino_data_mask[i];
else
*arduino_data_port[i] &= arduino_data_n_mask[i];
b >>= 1;
}
*arduino_e_port |= arduino_e_mask;
/* AVR Architecture is very slow, extra call is not required */
u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->data_setup_time_ns);
*arduino_e_port &= arduino_e_n_mask;
/* AVR Architecture is very slow, extra call is not required */
u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->write_pulse_width_ns);
}
break;
case U8X8_MSG_BYTE_INIT:
/* disable chipselect */
u8x8_gpio_SetCS(u8x8, u8x8->display_info->chip_disable_level);
/* no wait required here */
/* ensure that the enable signal is low */
u8x8_gpio_call(u8x8, U8X8_MSG_GPIO_E, 0);
break;
case U8X8_MSG_BYTE_SET_DC:
u8x8_gpio_SetDC(u8x8, arg_int);
break;
case U8X8_MSG_BYTE_START_TRANSFER:
u8x8_byte_set_ks0108_cs(u8x8, arg_int);
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->post_chip_enable_wait_ns, NULL);
/* there is no consistency checking for u8x8->pins[U8X8_PIN_E] */
arduino_e_port = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_E]));
arduino_e_mask = digitalPinToBitMask(u8x8->pins[U8X8_PIN_E]);
arduino_e_n_mask = ~arduino_e_mask;
/* there is no consistency checking for u8x8->pins[U8X8_PIN_D0] */
for( i = 0; i < 8; i++ )
{
arduino_data_port[i] = portOutputRegister(digitalPinToPort(u8x8->pins[U8X8_PIN_D0+i]));
arduino_data_mask[i] = digitalPinToBitMask(u8x8->pins[U8X8_PIN_D0+i]);
arduino_data_n_mask[i] = ~arduino_data_mask[i];
}
break;
case U8X8_MSG_BYTE_END_TRANSFER:
u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, u8x8->display_info->pre_chip_disable_wait_ns, NULL);
u8x8_byte_set_ks0108_cs(u8x8, arg_int);
break;
default:
return 0;
}
return 1;
}
#else
/* fallback */
extern "C" uint8_t u8x8_byte_arduino_ks0108(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
return u8x8_byte_ks0108(u8x8, msg,arg_int, arg_ptr);
}
#endif
#ifdef U8X8_USE_PINS
/*
use U8X8_PIN_NONE as value for "reset", if there is no reset line
*/
void u8x8_SetPin_4Wire_SW_SPI(u8x8_t *u8x8, uint8_t clock, uint8_t data, uint8_t cs, uint8_t dc, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_SPI_CLOCK, clock);
u8x8_SetPin(u8x8, U8X8_PIN_SPI_DATA, data);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#ifdef _obsolete_com_specific_setup
void u8x8_Setup_4Wire_SW_SPI(u8x8_t *u8x8, u8x8_msg_cb display_cb, uint8_t clock, uint8_t data, uint8_t cs, uint8_t dc, uint8_t reset)
{
u8x8_Setup(u8x8, display_cb, u8x8_cad_001, u8x8_byte_4wire_sw_spi, u8x8_gpio_and_delay_arduino);
/* assign individual pin values (only for ARDUINO, if pin_list is available) */
u8x8_SetPin(u8x8, U8X8_PIN_SPI_CLOCK, clock);
u8x8_SetPin(u8x8, U8X8_PIN_SPI_DATA, data);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#endif /* obsolete com specific setup */
void u8x8_SetPin_3Wire_SW_SPI(u8x8_t *u8x8, uint8_t clock, uint8_t data, uint8_t cs, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_SPI_CLOCK, clock);
u8x8_SetPin(u8x8, U8X8_PIN_SPI_DATA, data);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#ifdef _obsolete_com_specific_setup
void u8x8_Setup_3Wire_SW_SPI(u8x8_t *u8x8, u8x8_msg_cb display_cb, uint8_t clock, uint8_t data, uint8_t cs, uint8_t reset)
{
u8x8_Setup(u8x8, display_cb, u8x8_cad_001, u8x8_byte_3wire_sw_spi, u8x8_gpio_and_delay_arduino);
/* assign individual pin values (only for ARDUINO, if pin_list is available) */
u8x8_SetPin(u8x8, U8X8_PIN_SPI_CLOCK, clock);
u8x8_SetPin(u8x8, U8X8_PIN_SPI_DATA, data);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#endif /* obsolete com specific setup */
/*
use U8X8_PIN_NONE as value for "reset", if there is no reset line
*/
void u8x8_SetPin_3Wire_HW_SPI(u8x8_t *u8x8, uint8_t cs, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
/*
use U8X8_PIN_NONE as value for "reset", if there is no reset line
*/
void u8x8_SetPin_4Wire_HW_SPI(u8x8_t *u8x8, uint8_t cs, uint8_t dc, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
void u8x8_SetPin_ST7920_HW_SPI(u8x8_t *u8x8, uint8_t cs, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#ifdef _obsolete_com_specific_setup
void u8x8_Setup_4Wire_HW_SPI(u8x8_t *u8x8, u8x8_msg_cb display_cb, uint8_t cs, uint8_t dc, uint8_t reset)
{
u8x8_Setup(u8x8, display_cb, u8x8_cad_001, u8x8_byte_arduino_hw_spi, u8x8_gpio_and_delay_arduino);
/* assign individual pin values (only for ARDUINO, if pin_list is available) */
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#endif /* obsolete com specific setup */
void u8x8_SetPin_SW_I2C(u8x8_t *u8x8, uint8_t clock, uint8_t data, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_I2C_CLOCK, clock);
u8x8_SetPin(u8x8, U8X8_PIN_I2C_DATA, data);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#ifdef _obsolete_com_specific_setup
void u8x8_Setup_SSD13xx_SW_I2C(u8x8_t *u8x8, u8x8_msg_cb display_cb, uint8_t clock, uint8_t data, uint8_t reset)
{
u8x8_Setup(u8x8, display_cb, u8x8_cad_001, u8x8_byte_ssd13xx_sw_i2c, u8x8_gpio_and_delay_arduino);
/* assign individual pin values (only for ARDUINO, if pin_list is available) */
u8x8_SetPin(u8x8, U8X8_PIN_I2C_CLOCK, clock);
u8x8_SetPin(u8x8, U8X8_PIN_I2C_DATA, data);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#endif /* obsolete com specific setup */
void u8x8_SetPin_HW_I2C(u8x8_t *u8x8, uint8_t reset, uint8_t clock, uint8_t data)
{
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
u8x8_SetPin(u8x8, U8X8_PIN_I2C_CLOCK, clock);
u8x8_SetPin(u8x8, U8X8_PIN_I2C_DATA, data);
}
void u8x8_SetPin_8Bit_6800(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_D0, d0);
u8x8_SetPin(u8x8, U8X8_PIN_D1, d1);
u8x8_SetPin(u8x8, U8X8_PIN_D2, d2);
u8x8_SetPin(u8x8, U8X8_PIN_D3, d3);
u8x8_SetPin(u8x8, U8X8_PIN_D4, d4);
u8x8_SetPin(u8x8, U8X8_PIN_D5, d5);
u8x8_SetPin(u8x8, U8X8_PIN_D6, d6);
u8x8_SetPin(u8x8, U8X8_PIN_D7, d7);
u8x8_SetPin(u8x8, U8X8_PIN_E, enable);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#ifdef _obsolete_com_specific_setup
void u8x8_Setup_8Bit_6800(u8x8_t *u8x8, u8x8_msg_cb display_cb, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t cs, uint8_t dc, uint8_t reset)
{
u8x8_Setup(u8x8, display_cb, u8x8_cad_001, u8x8_byte_8bit_6800mode, u8x8_gpio_and_delay_arduino);
/* assign individual pin values (only for ARDUINO, if pin_list is available) */
u8x8_SetPin(u8x8, U8X8_PIN_D0, d0);
u8x8_SetPin(u8x8, U8X8_PIN_D1, d1);
u8x8_SetPin(u8x8, U8X8_PIN_D2, d2);
u8x8_SetPin(u8x8, U8X8_PIN_D3, d3);
u8x8_SetPin(u8x8, U8X8_PIN_D4, d4);
u8x8_SetPin(u8x8, U8X8_PIN_D5, d5);
u8x8_SetPin(u8x8, U8X8_PIN_D6, d6);
u8x8_SetPin(u8x8, U8X8_PIN_D7, d7);
u8x8_SetPin(u8x8, U8X8_PIN_E, enable);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#endif /* obsolete com specific setup */
void u8x8_SetPin_8Bit_8080(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t wr, uint8_t cs, uint8_t dc, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_D0, d0);
u8x8_SetPin(u8x8, U8X8_PIN_D1, d1);
u8x8_SetPin(u8x8, U8X8_PIN_D2, d2);
u8x8_SetPin(u8x8, U8X8_PIN_D3, d3);
u8x8_SetPin(u8x8, U8X8_PIN_D4, d4);
u8x8_SetPin(u8x8, U8X8_PIN_D5, d5);
u8x8_SetPin(u8x8, U8X8_PIN_D6, d6);
u8x8_SetPin(u8x8, U8X8_PIN_D7, d7);
u8x8_SetPin(u8x8, U8X8_PIN_E, wr);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#ifdef _obsolete_com_specific_setup
void u8x8_Setup_8Bit_8080(u8x8_t *u8x8, u8x8_msg_cb display_cb, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t wr, uint8_t cs, uint8_t dc, uint8_t reset)
{
u8x8_Setup(u8x8, display_cb, u8x8_cad_001, u8x8_byte_8bit_8080mode, u8x8_gpio_and_delay_arduino);
/* assign individual pin values (only for ARDUINO, if pin_list is available) */
u8x8_SetPin(u8x8, U8X8_PIN_D0, d0);
u8x8_SetPin(u8x8, U8X8_PIN_D1, d1);
u8x8_SetPin(u8x8, U8X8_PIN_D2, d2);
u8x8_SetPin(u8x8, U8X8_PIN_D3, d3);
u8x8_SetPin(u8x8, U8X8_PIN_D4, d4);
u8x8_SetPin(u8x8, U8X8_PIN_D5, d5);
u8x8_SetPin(u8x8, U8X8_PIN_D6, d6);
u8x8_SetPin(u8x8, U8X8_PIN_D7, d7);
u8x8_SetPin(u8x8, U8X8_PIN_E, wr);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#endif /* obsolete com specific setup */
void u8x8_SetPin_KS0108(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t enable, uint8_t dc, uint8_t cs0, uint8_t cs1, uint8_t cs2, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_D0, d0);
u8x8_SetPin(u8x8, U8X8_PIN_D1, d1);
u8x8_SetPin(u8x8, U8X8_PIN_D2, d2);
u8x8_SetPin(u8x8, U8X8_PIN_D3, d3);
u8x8_SetPin(u8x8, U8X8_PIN_D4, d4);
u8x8_SetPin(u8x8, U8X8_PIN_D5, d5);
u8x8_SetPin(u8x8, U8X8_PIN_D6, d6);
u8x8_SetPin(u8x8, U8X8_PIN_D7, d7);
u8x8_SetPin(u8x8, U8X8_PIN_E, enable);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_CS, cs0);
u8x8_SetPin(u8x8, U8X8_PIN_CS1, cs1);
u8x8_SetPin(u8x8, U8X8_PIN_CS2, cs2);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
void u8x8_SetPin_SED1520(u8x8_t *u8x8, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3, uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7, uint8_t dc, uint8_t e1, uint8_t e2, uint8_t reset)
{
u8x8_SetPin(u8x8, U8X8_PIN_D0, d0);
u8x8_SetPin(u8x8, U8X8_PIN_D1, d1);
u8x8_SetPin(u8x8, U8X8_PIN_D2, d2);
u8x8_SetPin(u8x8, U8X8_PIN_D3, d3);
u8x8_SetPin(u8x8, U8X8_PIN_D4, d4);
u8x8_SetPin(u8x8, U8X8_PIN_D5, d5);
u8x8_SetPin(u8x8, U8X8_PIN_D6, d6);
u8x8_SetPin(u8x8, U8X8_PIN_D7, d7);
u8x8_SetPin(u8x8, U8X8_PIN_E, e1);
u8x8_SetPin(u8x8, U8X8_PIN_CS, e2);
u8x8_SetPin(u8x8, U8X8_PIN_DC, dc);
u8x8_SetPin(u8x8, U8X8_PIN_RESET, reset);
}
#endif // U8X8_USE_PINS