altos/stmf0: Add SPI driver.

[fw/altos] / src / stmf0 / ao_dma_stm.c

diff --git a/src/stmf0/ao_dma_stm.c b/src/stmf0/ao_dma_stm.c
index 78fabe18558ea84d43c5ddfe23a3328b9070f766..e90c6bf838b11f4cca1e77df85560f7fe4c344e8 100644 (file)
--- a/src/stmf0/ao_dma_stm.c
+++ b/src/stmf0/ao_dma_stm.c
@@ -28,9 +28,7 @@ static uint8_t ao_dma_allocated[STM_NUM_DMA];
 static uint8_t ao_dma_mutex[STM_NUM_DMA];
 static uint8_t ao_dma_active;
 
-#define id(ch)         STM_DMA_INDEX(ch)
-#define id_mask(id)    (STM_DMA_ISR_MASK << (id))
-#define ch_mask(ch)    id_mask(id(ch))
+#define ch_mask(id)    (STM_DMA_ISR_MASK << STM_DMA_ISR(id))
 
 static void
 ao_dma_isr(uint8_t low_index, uint8_t high_index, uint32_t mask) {
@@ -41,7 +39,7 @@ ao_dma_isr(uint8_t low_index, uint8_t high_index, uint32_t mask) {
        /* Ack them */
        stm_dma.ifcr = isr;
        for (index = low_index; index <= high_index; index++) {
-               if (isr & id_mask(index)) {
+               if (isr & ch_mask(index)) {
                        if (ao_dma_config[index].isr)
                                (*ao_dma_config[index].isr)(index);
                        else {
@@ -52,9 +50,25 @@ ao_dma_isr(uint8_t low_index, uint8_t high_index, uint32_t mask) {
        }
 }
 
-void stm_dma_ch1_isr(void) { ao_dma_isr(id(1), id(1), ch_mask(1)); }
-void stm_dma_ch2_3_isr(void) { ao_dma_isr(id(2), id(3), ch_mask(2) | ch_mask(3)); }
-void stm_dma1_ch4_5_6_isr(void) { ao_dma_isr(id(4), id(6), ch_mask(4) | ch_mask(5) | ch_mask(6)); }
+void stm_dma_ch1_isr(void) {
+       ao_dma_isr(STM_DMA_INDEX(1),
+                  STM_DMA_INDEX(1),
+                  ch_mask(STM_DMA_INDEX(1)));
+}
+
+void stm_dma_ch2_3_isr(void) {
+       ao_dma_isr(STM_DMA_INDEX(2),
+                  STM_DMA_INDEX(3),
+                  ch_mask(STM_DMA_INDEX(2)) |
+                  ch_mask(STM_DMA_INDEX(3)));
+}
+
+void stm_dma1_ch4_5_6_isr(void) {
+       ao_dma_isr(STM_DMA_INDEX(4), STM_DMA_INDEX(6),
+                  ch_mask(STM_DMA_INDEX(4)) |
+                  ch_mask(STM_DMA_INDEX(5)) |
+                  ch_mask(STM_DMA_INDEX(6)));
+}
 
 void
 ao_dma_set_transfer(uint8_t            index,
@@ -73,11 +87,12 @@ ao_dma_set_transfer(uint8_t                 index,
                if (ao_dma_active++ == 0)
                        stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_DMAEN);
                );
-       stm_dma.channel[index].ccr = ccr | (1 << STM_DMA_CCR_TCIE);
+       ao_dma_config[index].isr = NULL;
+       ao_dma_done[index] = 0;
        stm_dma.channel[index].cndtr = count;
        stm_dma.channel[index].cpar = peripheral;
        stm_dma.channel[index].cmar = memory;
-       ao_dma_config[index].isr = NULL;
+       stm_dma.channel[index].ccr = ccr;
 }
 
 void
@@ -89,7 +104,6 @@ ao_dma_set_isr(uint8_t index, void (*isr)(int))
 void
 ao_dma_start(uint8_t index)
 {
-       ao_dma_done[index] = 0;
        stm_dma.channel[index].ccr |= (1 << STM_DMA_CCR_EN);
 }