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Merge pull request #824 from dhylands/sdcard-power

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Fix sdcard_power_on to not do anything if the card is already powered on...
This commit is contained in:
Damien George 2014-08-26 22:58:54 +01:00
commit f05b87bd63
1 changed files with 7 additions and 1 deletions
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6
stmhal/sdcard.c
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@ -90,6 +90,9 @@ bool sdcard_power_on(void) {
if (!sdcard_is_present()) { if (!sdcard_is_present()) {
return false; return false;
} }
if (sd_handle.Instance) {
return true;
}
// SD device interface configuration // SD device interface configuration
sd_handle.Instance = SDIO; sd_handle.Instance = SDIO;
@ -120,6 +123,9 @@ error:
} }
void sdcard_power_off(void) { void sdcard_power_off(void) {
if (!sd_handle.Instance) {
return;
}
HAL_SD_DeInit(&sd_handle); HAL_SD_DeInit(&sd_handle);
sd_handle.Instance = NULL; sd_handle.Instance = NULL;
} }