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Fixup SPI. (#17534)

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Nick Brassel 2022-07-06 06:41:35 +10:00 • committed by GitHub
parent 0e5d67145a
commit 29a2bac469
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 22 additions and 23 deletions
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42
drivers/eeprom/eeprom_spi.c
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@ -58,14 +58,20 @@ static bool spi_eeprom_start(void) {
static spi_status_t spi_eeprom_wait_while_busy(int timeout) {
uint32_t deadline = timer_read32() + timeout;
spi_status_t response;
do {
spi_status_t response = SR_WIP;
while (response & SR_WIP) {
if (!spi_eeprom_start()) {
return SPI_STATUS_ERROR;
}
spi_write(CMD_RDSR);
response = spi_read();
spi_stop();
if (timer_read32() >= deadline) {
return SPI_STATUS_TIMEOUT;
}
} while (response & SR_WIP);
}
return SPI_STATUS_SUCCESS;
}
@ -105,27 +111,21 @@ void eeprom_driver_erase(void) {
void eeprom_read_block(void *buf, const void *addr, size_t len) {
//-------------------------------------------------
// Wait for the write-in-progress bit to be cleared
bool res = spi_eeprom_start();
if (!res) {
dprint("failed to start SPI for WIP check\n");
memset(buf, 0, len);
return;
}
spi_status_t response = spi_eeprom_wait_while_busy(EXTERNAL_EEPROM_SPI_TIMEOUT);
spi_stop();
if (response == SPI_STATUS_TIMEOUT) {
dprint("SPI timeout for WIP check\n");
if (response != SPI_STATUS_SUCCESS) {
spi_stop();
memset(buf, 0, len);
dprint("SPI timeout for WIP check\n");
return;
}
//-------------------------------------------------
// Perform read
res = spi_eeprom_start();
bool res = spi_eeprom_start();
if (!res) {
dprint("failed to start SPI for read\n");
spi_stop();
memset(buf, 0, len);
dprint("failed to start SPI for read\n");
return;
}
@ -158,15 +158,9 @@ void eeprom_write_block(const void *buf, void *addr, size_t len) {
//-------------------------------------------------
// Wait for the write-in-progress bit to be cleared
res = spi_eeprom_start();
if (!res) {
dprint("failed to start SPI for WIP check\n");
return;
}
spi_status_t response = spi_eeprom_wait_while_busy(EXTERNAL_EEPROM_SPI_TIMEOUT);
spi_stop();
if (response == SPI_STATUS_TIMEOUT) {
if (response != SPI_STATUS_SUCCESS) {
spi_stop();
dprint("SPI timeout for WIP check\n");
return;
}
@ -175,6 +169,7 @@ void eeprom_write_block(const void *buf, void *addr, size_t len) {
// Enable writes
res = spi_eeprom_start();
if (!res) {
spi_stop();
dprint("failed to start SPI for write-enable\n");
return;
}
@ -186,6 +181,7 @@ void eeprom_write_block(const void *buf, void *addr, size_t len) {
// Perform the write
res = spi_eeprom_start();
if (!res) {
spi_stop();
dprint("failed to start SPI for write\n");
return;
}