7e93324288
- SPI_Bus_Lock: serialize LCD + SD on shared SPI; pause display during SD - SD_Init after WiFi scan; SD_IsReady gating; serial [SD]/[CAP] diagnostics - MUST_DO_IMPROVEMENTS.md full firmware review backlog; README link - Bump HANDSHAKE_FIRMWARE_VERSION to 1.0.2 (header) Made-with: Cursor
81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
#include "SD_Card.h"
|
|
#include "Display_ST7789.h"
|
|
#include "HandshakeCapture.h"
|
|
#include "SPI_Bus_Lock.h"
|
|
|
|
uint16_t SDCard_Size = 0;
|
|
static bool g_sd_ready = false;
|
|
static bool s_sd_vfs_was_open = false;
|
|
|
|
static void beginSDOperation() {
|
|
SPIBus_SetDisplayPaused(true);
|
|
SPIBus_Lock();
|
|
}
|
|
|
|
static void endSDOperation() {
|
|
SPIBus_Unlock();
|
|
SPIBus_SetDisplayPaused(false);
|
|
}
|
|
|
|
bool SD_IsReady() {
|
|
return g_sd_ready;
|
|
}
|
|
|
|
bool SD_Init() {
|
|
beginSDOperation();
|
|
g_sd_ready = false;
|
|
pinMode(SD_CS, OUTPUT);
|
|
digitalWrite(SD_CS, HIGH);
|
|
// Shared SPI with ST7789: ensure display CS idle so SD sees a clean bus.
|
|
digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, HIGH);
|
|
|
|
if (s_sd_vfs_was_open) {
|
|
SD.end();
|
|
s_sd_vfs_was_open = false;
|
|
HANDSHAKE_LOGLN("[SD] previous mount closed before re-begin");
|
|
}
|
|
|
|
HANDSHAKE_LOGF("[SD] begin(cs=%d)...\n", SD_CS);
|
|
if (!SD.begin(SD_CS, SPI)) {
|
|
HANDSHAKE_LOGLN("[SD] FAIL: SD.begin() returned false");
|
|
endSDOperation();
|
|
return false;
|
|
}
|
|
uint8_t ct = (uint8_t)SD.cardType();
|
|
HANDSHAKE_LOGF("[SD] cardType=%u (0=NONE)\n", (unsigned)ct);
|
|
if (SD.cardType() == CARD_NONE) {
|
|
HANDSHAKE_LOGLN("[SD] FAIL: CARD_NONE after begin");
|
|
SD.end();
|
|
s_sd_vfs_was_open = false;
|
|
endSDOperation();
|
|
return false;
|
|
}
|
|
g_sd_ready = true;
|
|
s_sd_vfs_was_open = true;
|
|
SDCard_Size = SD.totalBytes() / (1024 * 1024);
|
|
HANDSHAKE_LOGF("[SD] OK size=%u MiB ready=%d\n", (unsigned)SDCard_Size, (int)g_sd_ready);
|
|
endSDOperation();
|
|
return true;
|
|
}
|
|
|
|
bool SD_WriteFileAtomic(const char* path, const uint8_t* data, size_t len) {
|
|
if (path == nullptr || data == nullptr || len == 0) return false;
|
|
|
|
beginSDOperation();
|
|
|
|
bool ok = false;
|
|
File file = SD.open(path, FILE_WRITE);
|
|
if (file) {
|
|
ok = (file.write(data, len) == len);
|
|
file.close();
|
|
}
|
|
if (!ok) {
|
|
g_sd_ready = false;
|
|
}
|
|
|
|
endSDOperation();
|
|
|
|
if (len >= 1024) yield();
|
|
return ok;
|
|
}
|