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rp2_sd: Increase timeout for SD card initialization

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Spurious failures were observed with a SanDisk Ultra 32GB card that no
longer occur with the increased timeouts.

Signed-off-by: Matthias Blankertz <matthias@blankertz.org>
This commit is contained in:
Matthias Blankertz
2025-10-07 20:50:46 +02:00
parent 4d295501eb
commit 1fa3b3c887
1 changed files with 2 additions and 2 deletions
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4
software/modules/rp2_sd/sd.c
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@@ -23,7 +23,7 @@ static bool sd_acmd(const uint8_t cmd, const uint32_t arg, unsigned resplen, uin
static bool sd_early_init(void) static bool sd_early_init(void)
{ {
uint8_t buf; uint8_t buf;
for (int i = 0; i < 5; ++i) { for (int i = 0; i < 500; ++i) {
if (sd_cmd(0, 0, 1, &buf)) { if (sd_cmd(0, 0, 1, &buf)) {
#ifdef SD_DEBUG #ifdef SD_DEBUG
printf("CMD0 resp %02hhx\n", buf); printf("CMD0 resp %02hhx\n", buf);
@@ -63,7 +63,7 @@ static bool sd_send_op_cond(void)
{ {
uint8_t buf; uint8_t buf;
bool use_acmd = true; bool use_acmd = true;
for (int timeout = 0; timeout < 500; ++timeout) { for (int timeout = 0; timeout < 50000; ++timeout) {
bool result = false; bool result = false;
if (use_acmd) if (use_acmd)
result = sd_acmd(41, 0x40000000, 1, &buf); result = sd_acmd(41, 0x40000000, 1, &buf);