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Restore official Waveshare display register init sequence and LEDC backlight driver to fix blank display screen

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drjones
2026-07-04 02:57:45 -07:00
parent 632704318e
commit a1aef8d0ea
4 changed files with 114 additions and 203 deletions
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6
sound_picture_app/SD_Card.cpp
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@@ -18,15 +18,15 @@ int g_favoriteMemoryId = -1;
// ── SD Init ───────────────────────────────────────────────────────────────────
void SD_Init() {
if (!SD_MMC.setPins(SD_CLK_PIN, SD_CMD_PIN, SD_D0_PIN)) {
if (!SD_MMC.setPins(SD_CLK_PIN, SD_CMD_PIN, SD_D0_PIN, SD_D1_PIN, SD_D2_PIN, SD_D3_PIN)) {
printf("SD MMC: Pin change failed!\r\n");
return;
}
if (!SD_MMC.begin("/sdcard", true, true)) {
if (!SD_MMC.begin("/sdcard", false, true)) {
printf("SD card initialization failed!\r\n");
return;
}
printf("SD card OK (1-bit mode)\r\n");
printf("SD card OK (4-bit mode)\r\n");
uint8_t cardType = SD_MMC.cardType();
if (cardType == CARD_NONE) { printf("No SD card attached\r\n"); return; }