diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD')
| -rw-r--r-- | os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c b/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c index e05b60cb7..2df416c2b 100644 --- a/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c +++ b/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c @@ -399,8 +399,15 @@ void i2s_lld_start_exchange(I2SDriver *i2sp) { size_t size = i2sp->config->size;
/* In 32 bit modes the DMA has to perform double operations because fetches
- are always performed using 16 bit accesses.*/
- if ((i2sp->config->i2scfgr & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN)) != 0)
+ are always performed using 16 bit accesses.
+ DATLEN CHLEN SIZE
+ 00 (16) 0 (16) 16
+ 00 (16) 1 (32) 16
+ 01 (24) X 32
+ 10 (32) X 32
+ 11 (NA) X NA
+ */
+ if ((i2sp->config->i2scfgr & SPI_I2SCFGR_DATLEN) != 0)
size *= 2;
/* RX DMA setup.*/
|