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>

diff --git a/src/stm/ao_i2c_stm.c b/src/stm/ao_i2c_stm.c
index ae111ecb367d17002d8f1c859d8a7bb99fa5d1da..29a8f173f948682d81b1f367d07b20ec7c0687fe 100644 (file)
--- 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) |