diff options
| author | Keith Packard <keithp@keithp.com> | 2016-09-03 01:20:20 -0500 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2016-09-03 01:23:51 -0500 |
| commit | d80995c4535a3655ca1b9ca674d6839cfef84c4e (patch) | |
| tree | 19e76f0f907bcb1a9c14cfc9ec61c9d3bd964c79 | |
| parent | af2eefbed43e56885a7321319d69b7be17354cdd (diff) | |
altos/stm: Set i2c recv DMA to HIGH
Make sure receive DMA is higher than any TX dma so that
it always runs in preference.
Signed-off-by: Keith Packard <keithp@keithp.com>
| -rw-r--r-- | src/stm/ao_i2c_stm.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/stm/ao_i2c_stm.c b/src/stm/ao_i2c_stm.c index ae111ecb..29a8f173 100644 --- a/src/stm/ao_i2c_stm.c +++ b/src/stm/ao_i2c_stm.c @@ -138,7 +138,7 @@ ao_i2c_ev_isr(uint8_t index) ao_wakeup(&ao_i2c_state[index]); } if (sr1 & (1 << STM_I2C_SR1_RXNE)) { - if (ao_i2c_recv_len[index]) { + if (ao_i2c_recv_len[index]) { *(ao_i2c_recv_data[index]++) = stm_i2c->dr; if (!--ao_i2c_recv_len[index]) ao_wakeup(&ao_i2c_recv_len[index]); @@ -255,7 +255,7 @@ ao_i2c_send(void *block, uint16_t len, uint8_t index, uint8_t stop) (0 << STM_DMA_CCR_PINC) | (0 << STM_DMA_CCR_CIRC) | (STM_DMA_CCR_DIR_MEM_TO_PER << STM_DMA_CCR_DIR)); - + ao_dma_start(tx_dma_index); ao_arch_block_interrupts(); while (!ao_dma_done[tx_dma_index]) @@ -331,7 +331,7 @@ ao_i2c_recv(void *block, uint16_t len, uint8_t index, uint8_t stop) 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) | |