diff options
| author | Victor Rajewski <victor@allumeenergy.com.au> | 2023-07-04 15:11:06 +1000 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2023-07-13 12:49:51 +1000 |
| commit | 730525cec965a912354454ec015a3d043d5579d3 (patch) | |
| tree | cf8395c31dcf7b84df2b8733a4f1f65766046725 | |
| parent | 409978a1fb85968ac3a5eb0bc33788eb507dee14 (diff) | |
stm32/qspi: Allow qspi_write_cmd_data to write cmd with 1 data byte.
The existing qspi for stm32 implementation can only send a spi command with
exactly 0 or 2 data bytes. Certain spiflash chips (e.g. AT25SF321B) have
commands that only take a single data byte, and will ignore the command if
more than that is sent. This commit allows sending a command with a single
data byte.
Signed-off-by: Victor Rajewski <victor@allumeenergy.com.au>
| -rw-r--r-- | ports/stm32/qspi.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/ports/stm32/qspi.c b/ports/stm32/qspi.c index a79e692e0..c10bec236 100644 --- a/ports/stm32/qspi.c +++ b/ports/stm32/qspi.c @@ -232,8 +232,12 @@ STATIC int qspi_write_cmd_data(void *self_in, uint8_t cmd, size_t len, uint32_t while (!(QUADSPI->SR & QUADSPI_SR_FTF)) { } - // This assumes len==2 - *(uint16_t *)&QUADSPI->DR = data; + if (len == 1) { + *(uint8_t *)&QUADSPI->DR = data; + } else { + // This assumes len==2 + *(uint16_t *)&QUADSPI->DR = data; + } } // Wait for write to finish |