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78 lines
2.6 KiB
78 lines
2.6 KiB
#include <stdio.h>
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#include "edid.h"
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#define FAILURE(buf_str, line) \
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fprintf(stderr, "X Failed on line %d: [%s]\n", line, buf_str); \
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return EXIT_FAILURE;
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#define SUCCESS(buf_str, line) \
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fprintf(stdout, "✓ Success on line %d: [%s]\n", line, buf_str);
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#define CHECK_TRUE(expr) \
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if (!(expr)) { \
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FAILURE(#expr, __LINE__); \
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} else { \
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SUCCESS(#expr, __LINE__); \
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}
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static const uint8_t i2c_data_screen_0[EDID_LEN] = {
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0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x1e, 0x6d, 0xd5, 0x59, 0x04, 0x45, 0x09, 0x00,
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0x03, 0x17, 0x01, 0x03, 0x68, 0x35, 0x1e, 0x78, 0xea, 0x33, 0x31, 0xa4, 0x57, 0x51, 0xa0, 0x26,
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0x10, 0x50, 0x54, 0xa7, 0x6b, 0x80, 0xb3, 0x00, 0x81, 0x80, 0x95, 0x00, 0x71, 0x4f, 0xa9, 0xc0,
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0x81, 0x00, 0x81, 0xc0, 0x90, 0x40, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
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0x45, 0x00, 0x09, 0x25, 0x21, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x38, 0x4b, 0x1e,
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0x53, 0x0f, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x32,
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0x34, 0x45, 0x4e, 0x33, 0x33, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xff,
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0x00, 0x33, 0x30, 0x33, 0x4e, 0x44, 0x51, 0x41, 0x48, 0x56, 0x34, 0x39, 0x32, 0x0a, 0x00, 0xf1
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};
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/**
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* @brief Helper function to compare EDID data structure with golden design data structure extracted from real
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* VGA screen.
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*/
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static int compare_edid(const uint8_t* const edid, const uint8_t* const edid_golden)
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{
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for (int sanny=0; sanny<EDID_LEN; sanny++) {
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CHECK_TRUE(edid[sanny] == edid_golden[sanny]);
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}
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return 0;
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}
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/**
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* @brief Helper function to show buffer
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*/
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static void disp_buf(uint8_t *buf, int len)
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{
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int i;
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for (i = 0; i < len; i++) {
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printf("%02x ", buf[i]);
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if ((i + 1) % 16 == 0) {
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printf("\n");
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}
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}
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printf("\n");
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}
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int main(void)
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{
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edid_t edith;
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const char* const json_file = "edid0.json";
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/* 1) If check fails the structure has been build up in the wrong way on the target platform.
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*/
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CHECK_TRUE(sizeof(edid_t) == EDID_LEN);
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/* 2) If check fails the EDID data structure could not be generated.
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*/
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CHECK_TRUE(generate_edid(&edith, json_file) == 0);
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/* 3) 128 checks in one function to probe every single byte.
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*/
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int ret = 0;
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if (ret = compare_edid((uint8_t*)&edith, i2c_data_screen_0)) {
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printf("ret> %d\n", ret);
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return ret;
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}
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printf("\n");
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printf("Generated EDID data from %s:\n", json_file);
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disp_buf((uint8_t*)&edith, EDID_LEN);
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return 0;
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}
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