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stmhal: Add retry to SD card init.

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This fixed an issue with a certain SD card sometimes not initialising
first time round.  See issue #822 for related, and thanks to
@iabdalkader for the idea.
This commit is contained in:
Damien George 2014-10-20 00:04:27 +01:00
parent 0c3955b506
commit 072bd07f17
1 changed files with 6 additions and 3 deletions
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9
stmhal/sdcard.c
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@ -105,10 +105,13 @@ bool sdcard_power_on(void) {
sd_handle.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE;
sd_handle.Init.ClockDiv = SDIO_TRANSFER_CLK_DIV;
// init the SD interface
// init the SD interface, with retry if it's not ready yet
HAL_SD_CardInfoTypedef cardinfo;
if (HAL_SD_Init(&sd_handle, &cardinfo) != SD_OK) {
goto error;
for (int retry = 10; HAL_SD_Init(&sd_handle, &cardinfo) != SD_OK; retry--) {
if (retry == 0) {
goto error;
}
HAL_Delay(50);
}
// configure the SD bus width for wide operation