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-rw-r--r--fw/main.c20
-rw-r--r--fw/transpose.c3
2 files changed, 17 insertions, 6 deletions
diff --git a/fw/main.c b/fw/main.c
index aa01b6c..9470f5c 100644
--- a/fw/main.c
+++ b/fw/main.c
@@ -109,6 +109,9 @@ int shift_data() {
spi_send(current_word>>16);
strobe_leds();
+ if (current_word&0xffff)
+ asm("bkpt");
+
return 1<<active_bit;
}
@@ -153,6 +156,11 @@ void USART1_IRQHandler() {
int addr = gaddr; /* FIXME DEBUG */
int cmd = addr>>5;
addr &= 0x1F;
+ /* Overrun detected? */
+ if (USART1->ISR & USART_ISR_ORE) {
+ USART1->ICR |= USART_ICR_ORECF;
+ USART1->RQR |= USART_RQR_MMRQ;
+ }
/* Are we addressed? */
if (addr != this_addr) {
/* We are not. Mute USART until next idle condition */
@@ -181,14 +189,16 @@ return;
}
void DMA1_Channel2_3_IRQHandler() {
- /* DMA Transfer complete, re-enable receive interrupt */
- USART1->CR1 |= USART_CR1_RXNEIE;
+ /* DMA Transfer complete */
/* ...and disable this DMA channel */
USART1->CR3 &= ~USART_CR3_DMAR_Msk;
DMA1_Channel3->CCR &= ~DMA_CCR_EN_Msk;
/* Kick off formatting code in main loop outside interrupt context */
fb_op = FB_FORMAT;
DMA1->IFCR |= DMA_IFCR_CGIF3;
+ /* re-enable receive interrupt */
+ USART1->RQR |= USART_RQR_RXFRQ;
+ USART1->CR1 |= USART_CR1_RXNEIE;
}
void uart_config(void) {
@@ -224,7 +234,7 @@ void uart_config(void) {
| DMA_CCR_CIRC;
NVIC_EnableIRQ(USART1_IRQn);
- NVIC_SetPriority(USART1_IRQn, 3);
+ NVIC_SetPriority(USART1_IRQn, 4);
NVIC_EnableIRQ(DMA1_Channel2_3_IRQn);
NVIC_SetPriority(DMA1_Channel2_3_IRQn, 3);
}
@@ -303,7 +313,7 @@ int main(void) {
/* Clear frame buffer */
read_fb->brightness = 1;
for (int i=0; i<sizeof(read_fb->data)/sizeof(uint32_t); i++) {
- read_fb->data[i] = 0xffffffff; /*FIXME debug replace with 0x00000000 */
+ read_fb->data[i] = 0x00000000;
}
cfg_timer3();
@@ -319,7 +329,7 @@ int main(void) {
}
last_sys_time = sys_time;
if (fb_op == FB_FORMAT) {
- //transpose_data(rx_buf, read_fb);
+ transpose_data(rx_buf, write_fb);
fb_op = FB_UPDATE;
while (fb_op == FB_UPDATE)
;
diff --git a/fw/transpose.c b/fw/transpose.c
index 1c5f982..5060920 100644
--- a/fw/transpose.c
+++ b/fw/transpose.c
@@ -23,8 +23,8 @@ void transpose_data(volatile uint8_t *rx_buf, volatile struct framebuf *out_fb)
}
for (int bit=0; bit<2; bit++) { /* bits */
volatile uint32_t *frame_data = out_fb->frame[bit].data;
- uint16_t *inp = &rxp->low;
for (int seg=0; seg<8; seg++) { /* segments */
+ uint16_t *inp = &rxp->low;
uint32_t mask = 1 << bit << (seg*2);
uint32_t acc = 0;
for (int digit=0; digit<32; digit++) {
@@ -34,6 +34,7 @@ void transpose_data(volatile uint8_t *rx_buf, volatile struct framebuf *out_fb)
frame_data[seg] = acc;
}
}
+ out_fb->brightness = ((volatile struct framebuf *)rx_buf)->brightness;
}