diff options
| author | Keith Packard <keithp@keithp.com> | 2016-09-03 01:21:34 -0500 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2016-09-03 01:23:51 -0500 |
| commit | 9279b0cd52333a846b57af890f708ebb364b62b7 (patch) | |
| tree | 54ec798043e064908884ce944e8508f1d6dcd217 | |
| parent | d80995c4535a3655ca1b9ca674d6839cfef84c4e (diff) | |
altos/stm: Set SPI slave DMA priority to HIGH/VERY_HIGH
Set spi slave DMA priority MOSI to HIGH and MISO to VERY_HIGH. Slave
SPI doesn't have the luxury of slowing down when the system is busy,
so provide it maximum memory bandwidth to try and keep up with the
master.
Signed-off-by: Keith Packard <keithp@keithp.com>
| -rw-r--r-- | src/stm/ao_spi_stm_slave.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/stm/ao_spi_stm_slave.c b/src/stm/ao_spi_stm_slave.c index de07a7fc..5bb5105d 100644 --- a/src/stm/ao_spi_stm_slave.c +++ b/src/stm/ao_spi_stm_slave.c @@ -55,7 +55,7 @@ ao_spi_slave_send(void *block, uint16_t len) block, len, (0 << STM_DMA_CCR_MEM2MEM) | - (STM_DMA_CCR_PL_MEDIUM << STM_DMA_CCR_PL) | + (STM_DMA_CCR_PL_HIGH << STM_DMA_CCR_PL) | (STM_DMA_CCR_MSIZE_8 << STM_DMA_CCR_MSIZE) | (STM_DMA_CCR_PSIZE_8 << STM_DMA_CCR_PSIZE) | (1 << STM_DMA_CCR_MINC) | @@ -75,7 +75,7 @@ ao_spi_slave_send(void *block, uint16_t len) &spi_dev_null, len, (0 << STM_DMA_CCR_MEM2MEM) | - (STM_DMA_CCR_PL_MEDIUM << STM_DMA_CCR_PL) | + (STM_DMA_CCR_PL_VERY_HIGH << STM_DMA_CCR_PL) | (STM_DMA_CCR_MSIZE_8 << STM_DMA_CCR_MSIZE) | (STM_DMA_CCR_PSIZE_8 << STM_DMA_CCR_PSIZE) | (0 << STM_DMA_CCR_MINC) | @@ -111,7 +111,7 @@ ao_spi_slave_recv(void *block, uint16_t len) &spi_dev_null, len, (0 << STM_DMA_CCR_MEM2MEM) | - (STM_DMA_CCR_PL_MEDIUM << STM_DMA_CCR_PL) | + (STM_DMA_CCR_PL_HIGH << STM_DMA_CCR_PL) | (STM_DMA_CCR_MSIZE_8 << STM_DMA_CCR_MSIZE) | (STM_DMA_CCR_PSIZE_8 << STM_DMA_CCR_PSIZE) | (0 << STM_DMA_CCR_MINC) | @@ -128,7 +128,7 @@ ao_spi_slave_recv(void *block, uint16_t len) block, len, (0 << STM_DMA_CCR_MEM2MEM) | - (STM_DMA_CCR_PL_MEDIUM << STM_DMA_CCR_PL) | + (STM_DMA_CCR_PL_VERY_HIGH << STM_DMA_CCR_PL) | (STM_DMA_CCR_MSIZE_8 << STM_DMA_CCR_MSIZE) | (STM_DMA_CCR_PSIZE_8 << STM_DMA_CCR_PSIZE) | (1 << STM_DMA_CCR_MINC) | |