/* * SPDX-License-Identifier: MIT * * Copyright (C) 2013-2024 OpenMV, LLC. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * TFP410 DVI serializer module. */ #include "omv_boardconfig.h" #if OMV_TFP410_ENABLE #include "py/obj.h" #include "py/objarray.h" #include "py/runtime.h" #include "mphal.h" #include "extmod/modmachine.h" #include "omv_gpio.h" #include "fb_alloc.h" #include "cec.h" #define TFP410_I2C_ADDR 0x3F typedef struct _py_tfp410_obj_t { mp_obj_base_t base; mp_obj_t i2c_bus; uint8_t i2c_addr; mp_obj_t hotplug_callback; } py_tfp410_obj_t; const mp_obj_type_t py_tfp410_type; static int dvi_is_connected(py_tfp410_obj_t *self, bool *connected) { if (mp_machine_soft_i2c_transfer(self->i2c_bus, self->i2c_addr, 1, &((mp_machine_i2c_buf_t) {.len = 1, .buf = (uint8_t []) {0x09}}), 0) == 1) { uint8_t reg; if ((mp_machine_soft_i2c_transfer(self->i2c_bus, self->i2c_addr, 1, &((mp_machine_i2c_buf_t) { .len = 1, .buf = ® }), MP_MACHINE_I2C_FLAG_READ | MP_MACHINE_I2C_FLAG_STOP) == 0) && (mp_machine_soft_i2c_transfer(self->i2c_bus, self->i2c_addr, 1, &((mp_machine_i2c_buf_t) { .len = 2, .buf = (uint8_t []) {0x09, 0x19} // clear interrupt flag }), MP_MACHINE_I2C_FLAG_STOP) == 2)) { *connected = (reg & 2); return 0; } } // Generate stop on error mp_machine_soft_i2c_transfer(self->i2c_bus, self->i2c_addr, 1, &((mp_machine_i2c_buf_t) {.len = 0, .buf = NULL }), MP_MACHINE_I2C_FLAG_STOP); return -1; } static void dvi_extint_callback(mp_obj_t self_in) { py_tfp410_obj_t *self = MP_OBJ_TO_PTR(self_in); if (self->hotplug_callback != mp_const_none) { bool connected; if (dvi_is_connected(self, &connected) != -1) { mp_call_function_1(self->hotplug_callback, mp_obj_new_bool(connected)); } } } static mp_obj_t py_dvi_is_connected(mp_obj_t self_in) { py_tfp410_obj_t *self = MP_OBJ_TO_PTR(self_in); bool connected; if (dvi_is_connected(self, &connected) != -1) { return mp_obj_new_bool(connected); } mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("Display init failed!")); } static MP_DEFINE_CONST_FUN_OBJ_1(py_dvi_is_connected_obj, py_dvi_is_connected); static mp_obj_t py_dvi_hotplug_callback(mp_obj_t self_in, mp_obj_t cb) { py_tfp410_obj_t *self = MP_OBJ_TO_PTR(self_in); self->hotplug_callback = cb; if (cb == mp_const_none) { omv_gpio_irq_enable(OMV_TFP410_INT_PIN, false); } else { omv_gpio_config(OMV_TFP410_INT_PIN, OMV_GPIO_MODE_IT_FALL, OMV_GPIO_PULL_UP, OMV_GPIO_SPEED_LOW, -1); omv_gpio_irq_register(OMV_TFP410_INT_PIN, dvi_extint_callback, self_in); omv_gpio_irq_enable(OMV_TFP410_INT_PIN, true); } return mp_const_none; } static MP_DEFINE_CONST_FUN_OBJ_2(py_dvi_hotplug_callback_obj, py_dvi_hotplug_callback); mp_obj_t py_tfp410_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) { enum { ARG_i2c_addr }; static const mp_arg_t allowed_args[] = { { MP_QSTR_i2c_addr, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = TFP410_I2C_ADDR } }, }; // Parse args. mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); py_tfp410_obj_t *self = mp_obj_malloc_with_finaliser(py_tfp410_obj_t, &py_tfp410_type); self->hotplug_callback = mp_const_none; self->i2c_addr = args[ARG_i2c_addr].u_int; self->i2c_bus = MP_OBJ_TYPE_GET_SLOT( &mp_machine_soft_i2c_type, make_new) (&mp_machine_soft_i2c_type, 2, 0, (const mp_obj_t []) { (mp_obj_t) OMV_TFP410_SCL_PIN, (mp_obj_t) OMV_TFP410_SDA_PIN }); omv_gpio_config(OMV_TFP410_RESET_PIN, OMV_GPIO_MODE_OUTPUT, OMV_GPIO_PULL_NONE, OMV_GPIO_SPEED_LOW, -1); omv_gpio_write(OMV_TFP410_RESET_PIN, 0); mp_hal_delay_ms(1); omv_gpio_write(OMV_TFP410_RESET_PIN, 1); mp_hal_delay_ms(1); if (mp_machine_soft_i2c_transfer(self->i2c_bus, TFP410_I2C_ADDR, 1, &((mp_machine_i2c_buf_t) { .len = 4, .buf = (uint8_t []) {0x08, 0xB7, 0x19, 0x80} // addr, CTL_1, CTL_2, CTL_3 }), MP_MACHINE_I2C_FLAG_STOP) != 4) { mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("Failed to init DVI bus")); } return MP_OBJ_FROM_PTR(self); } static mp_obj_t py_tfp410_deinit(mp_obj_t self_in) { omv_gpio_irq_enable(OMV_TFP410_INT_PIN, false); omv_gpio_write(OMV_TFP410_RESET_PIN, 0); mp_hal_delay_ms(1); omv_gpio_write(OMV_TFP410_RESET_PIN, 1); mp_hal_delay_ms(1); omv_gpio_deinit(OMV_TFP410_INT_PIN); omv_gpio_deinit(OMV_TFP410_RESET_PIN); return mp_const_none; } static MP_DEFINE_CONST_FUN_OBJ_1(py_tfp410_deinit_obj, py_tfp410_deinit); static const mp_rom_map_elem_t py_tfp410_locals_dict_table[] = { { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_tfp410) }, { MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&py_tfp410_deinit_obj) }, { MP_ROM_QSTR(MP_QSTR_isconnected), MP_ROM_PTR(&py_dvi_is_connected_obj) }, { MP_ROM_QSTR(MP_QSTR_hotplug_callback), MP_ROM_PTR(&py_dvi_hotplug_callback_obj)}, }; MP_DEFINE_CONST_DICT(py_tfp410_locals_dict, py_tfp410_locals_dict_table); MP_DEFINE_CONST_OBJ_TYPE( py_tfp410_type, MP_QSTR_TFP410, MP_TYPE_FLAG_NONE, make_new, py_tfp410_make_new, locals_dict, &py_tfp410_locals_dict ); static const mp_rom_map_elem_t globals_dict_table[] = { { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_tfp410) }, { MP_ROM_QSTR(MP_QSTR_TFP410), MP_ROM_PTR(&py_tfp410_type) }, }; static MP_DEFINE_CONST_DICT(globals_dict, globals_dict_table); const mp_obj_module_t tfp410_module = { .base = { &mp_type_module }, .globals = (mp_obj_t) &globals_dict, }; MP_REGISTER_MODULE(MP_QSTR_tfp410, tfp410_module); #endif // OMV_TFP410_ENABLE