Merge pull request #2668 from openmv/add_soft_csi
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drivers/softcsi: Add virtual image sensor for testing.
This commit is contained in:
Ibrahim Abdelkader 2025-04-21 10:30:10 +02:00 committed by GitHub
commit 0d0cbbec7a
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5 changed files with 182 additions and 0 deletions

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@ -60,6 +60,7 @@
#include "frogeye2020.h"
#include "gc2145.h"
#include "genx320.h"
#include "softcsi.h"
#include "framebuffer.h"
#include "unaligned_memcpy.h"
@ -370,7 +371,12 @@ int omv_csi_probe_init(uint32_t bus_id, uint32_t bus_speed) {
csi.reset_pol = OMV_CSI_ACTIVE_LOW;
#endif
} else {
#if (OMV_SOFTCSI_ENABLE == 1)
csi.slv_addr = SOFTCSI_SLV_ADDR;
csi.chip_id = SOFTCSI_ID;
#else
return OMV_CSI_ERROR_ISC_UNDETECTED;
#endif
}
}
}
@ -547,6 +553,12 @@ int omv_csi_probe_init(uint32_t bus_id, uint32_t bus_speed) {
break;
#endif // (OMV_FROGEYE2020_ENABLE == 1)
#if (OMV_SOFTCSI_ENABLE == 1)
case SOFTCSI_ID:
init_ret = softcsi_init(&csi);
break;
#endif // (OMV_SOFTCSI_ENABLE == 1)
default:
return OMV_CSI_ERROR_ISC_UNSUPPORTED;
break;

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@ -49,6 +49,7 @@
#define FROGEYE2020_SLV_ADDR (0x6E)
#define PAG7920_SLV_ADDR (0x80)
#define PAG7936_SLV_ADDR (0x80)
#define SOFTCSI_SLV_ADDR (0x7f)
// Chip ID Registers
#define OV5640_CHIP_ID (0x300A)
@ -92,6 +93,7 @@
#define PAG7936_ID (0x7936)
#define PAJ6100_ID (0x6100)
#define FROGEYE2020_ID (0x2020)
#define SOFTCSI_ID (0x50F7)
#define OMV_CSI_TIMEOUT_MS (3000)

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@ -204,6 +204,7 @@ DRIVER_SRC_C += $(addprefix sensors/, \
pag7920.c \
pag7936.c \
paj6100.c \
softcsi.c \
)
CFLAGS += -I$(TOP_DIR)/drivers/sensors

137
drivers/sensors/softcsi.c Normal file
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@ -0,0 +1,137 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright (C) 2025 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.
*
* Virtual image sensor.
*/
#include "omv_boardconfig.h"
#if (OMV_SOFTCSI_ENABLE == 1)
#include <stdio.h>
#include "omv_csi.h"
#include "vospi.h"
#include "py/mphal.h"
#include "omv_common.h"
#include "omv_gpio.h"
#include "omv_i2c.h"
#include "framebuffer.h"
static int reset(omv_csi_t *csi) {
return 0;
}
static int set_pixformat(omv_csi_t *csi, pixformat_t pixformat) {
switch (pixformat) {
case PIXFORMAT_RGB565:
case PIXFORMAT_GRAYSCALE:
return 0;
default:
return -1;
}
}
static int set_framesize(omv_csi_t *csi, omv_csi_framesize_t framesize) {
return 0;
}
static int snapshot(omv_csi_t *csi, image_t *image, uint32_t flags) {
if (!image) {
return 0;
}
framebuffer_update_jpeg_buffer();
if (MAIN_FB()->n_buffers != 1) {
framebuffer_set_buffers(1);
}
if (csi->pixformat == PIXFORMAT_INVALID) {
return OMV_CSI_ERROR_INVALID_PIXFORMAT;
}
if (csi->framesize == OMV_CSI_FRAMESIZE_INVALID) {
return OMV_CSI_ERROR_INVALID_FRAMESIZE;
}
if (omv_csi_check_framebuffer_size(csi) == -1) {
return OMV_CSI_ERROR_FRAMEBUFFER_OVERFLOW;
}
framebuffer_free_current_buffer();
vbuffer_t *buffer = framebuffer_get_tail(FB_NO_FLAGS);
if (!buffer) {
return OMV_CSI_ERROR_FRAMEBUFFER_ERROR;
}
MAIN_FB()->w = MAIN_FB()->u;
MAIN_FB()->h = MAIN_FB()->v;
MAIN_FB()->pixfmt = csi->pixformat;
framebuffer_init_image(image);
static uint32_t step = 0;
uint32_t offset = (step / 4);
for (size_t y = 0; y < image->h; y++) {
for (size_t x = 0; x < image->w; x++) {
switch (csi->pixformat) {
case PIXFORMAT_GRAYSCALE: {
// Checkerboard: periodic every 16 pixels, scrolls horizontally
uint8_t value = ((((x + offset) / 16) + (y / 16)) % 2) ? 0xFF : 0x00;
IMAGE_PUT_GRAYSCALE_PIXEL(image, x, y, value);
break;
}
case PIXFORMAT_RGB565: {
// Make red/blue periodic with smooth wrap using modulo
uint8_t r = (((x + offset) % image->w) * 31) / (image->w - 1);
uint8_t g = (y * 63) / (image->h - 1);
uint8_t b = (((((x + offset) % image->w) ^ y) * 31) / (image->w + image->h - 2));
uint16_t pixel = COLOR_R5_G6_B5_TO_RGB565(r, g, b);
IMAGE_PUT_RGB565_PIXEL(image, x, y, pixel);
break;
}
default:
break;
}
}
}
step++;
return 0;
}
int softcsi_init(omv_csi_t *csi) {
csi->reset = reset;
csi->snapshot = snapshot;
csi->set_pixformat = set_pixformat;
csi->set_framesize = set_framesize;
csi->vsync_pol = 1;
csi->hsync_pol = 0;
csi->pixck_pol = 0;
csi->frame_sync = 0;
csi->mono_bpp = 1;
return 0;
}
#endif // (OMV_SOFTCSI_ENABLE == 1)

30
drivers/sensors/softcsi.h Normal file
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@ -0,0 +1,30 @@
/*
* SPDX-License-Identifier: MIT
*
* Copyright (C) 2025 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.
*
* Virtual image sensor.
*/
#ifndef __SOFTCSI_H__
#define __SOFTCSI_H__
#define OMV_SOFTCSI_CLK_FREQ (24000000)
int softcsi_init(omv_csi_t *csi);
#endif // __SOFTCSI_H__