diff options
| author | Keith Packard <keithp@keithp.com> | 2016-11-20 01:42:22 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2016-11-20 01:42:22 -0800 |
| commit | fd05d495b463685d81e75115a93fdda2764c7113 (patch) | |
| tree | 3bf8f2391c7c865f261baffcaca0738fe8013421 /src/stm | |
| parent | 34e68a77dcd458f9cf9d839a55e4e84a6d95a48d (diff) | |
altos/stm-vga: Fix DMA reset to load scanline each time
If we load the scanline register while DMA is running, it doesn't
actually get reloaded until after the first transfer from the next
line, leaving a weird jog in the middle of the screen.
Also flip to SPI1, as Bdale is using that on the 1802 board.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/stm')
| -rw-r--r-- | src/stm/ao_dma_stm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/stm/ao_dma_stm.c b/src/stm/ao_dma_stm.c index 0c86b49a..a24c6d3a 100644 --- a/src/stm/ao_dma_stm.c +++ b/src/stm/ao_dma_stm.c @@ -48,7 +48,11 @@ ao_dma_isr(uint8_t index) { void stm_dma1_channel1_isr(void) { ao_dma_isr(STM_DMA_INDEX(1)); } void stm_dma1_channel2_isr(void) { ao_dma_isr(STM_DMA_INDEX(2)); } +#ifdef STM_DMA1_3_STOLEN +#define LEAVE_DMA_ON +#else void stm_dma1_channel3_isr(void) { ao_dma_isr(STM_DMA_INDEX(3)); } +#endif void stm_dma1_channel4_isr(void) { ao_dma_isr(STM_DMA_INDEX(4)); } #ifdef STM_DMA1_5_STOLEN #define LEAVE_DMA_ON @@ -179,6 +183,13 @@ ao_dma_init(void) continue; } #endif +#if STM_DMA1_3_STOLEN + if (index == STM_DMA_INDEX(3)) { + ao_dma_allocated[index] = 1; + ao_dma_mutex[index] = 0xff; + continue; + } +#endif stm_nvic_set_enable(STM_ISR_DMA1_CHANNEL1_POS + index); stm_nvic_set_priority(STM_ISR_DMA1_CHANNEL1_POS + index, 4); ao_dma_allocated[index] = 0; |