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Debugging signal capture subsystem

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This commit is contained in:
jaseg 2020-03-17 17:20:43 +01:00
parent 9d72724ca5
commit 80de5c2e24
6 changed files with 300 additions and 6 deletions
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2
controller/fw/src/adc.c
View file

@ -6,6 +6,7 @@
#include "adc.h"
#include "sr_global.h"
static unsigned int adc_overruns = 0;
uint16_t adc_fft_buf[2][FMEAS_FFT_LEN];
volatile int adc_fft_buf_ready_idx = -1;
@ -93,6 +94,7 @@ void DMA2_Stream0_IRQHandler(void) {
GPIOA->BSRR = 1<<11<<16;
/* clear all flags */
adc_dma->LIFCR = isr<<DMA_LISR_FEIF0_Pos;
adc_overruns++;
return;
panic();
}

3
controller/fw/src/con_usart.h
View file

@ -6,9 +6,10 @@
extern volatile struct usart_desc con_usart;
#define con_printf(...) usart_printf(&con_usart, __VA_ARGS__)
#define con_printf_blocking(...) usart_printf_blocking(&con_usart, __VA_ARGS__)
#ifndef CON_USART_BAUDRATE
#define CON_USART_BAUDRATE 115200
#define CON_USART_BAUDRATE 500000
#endif
void con_usart_init(void);

19
controller/fw/src/main.c
View file

@ -197,7 +197,7 @@ int main(void)
clock_setup();
con_usart_init();
con_printf("\033[2J\033[HBooting...\r\n");
con_printf("\033[0m\033[2J\033[HBooting...\r\n");
led_setup();
spi_flash_setup();
@ -217,9 +217,22 @@ int main(void)
while (23) {
if (adc_fft_buf_ready_idx != -1) {
GPIOA->BSRR = 1<<11;
adc_fft_buf_ready_idx = !adc_fft_buf_ready_idx; /* DEBUG */
memcpy(adc_fft_buf[!adc_fft_buf_ready_idx], adc_fft_buf[adc_fft_buf_ready_idx] + FMEAS_FFT_LEN/2, sizeof(adc_fft_buf[0][0]) * FMEAS_FFT_LEN/2);
//adc_fft_buf_ready_idx = !adc_fft_buf_ready_idx; /* DEBUG */
//DEBUG:
//memcpy(adc_fft_buf[!adc_fft_buf_ready_idx], adc_fft_buf[adc_fft_buf_ready_idx] + FMEAS_FFT_LEN/2, sizeof(adc_fft_buf[0][0]) * FMEAS_FFT_LEN/2);
for (int i=0; i<168*1000*2; i++)
asm volatile ("nop");
/* BEGIN DEBUG */
con_printf_blocking("\r\n%06d: ", freq_sample_ts);
int old_idx = adc_fft_buf_ready_idx;
for (int i=0; i<FMEAS_FFT_LEN/2; i++)
con_printf_blocking("%03x ", adc_fft_buf[old_idx][FMEAS_FFT_LEN/2 + i]);
adc_fft_buf_ready_idx = -1;
freq_sample_ts++; /* TODO: also increase in case of freq measurement error? */
GPIOA->BSRR = 1<<11<<16;
continue;
/* END DEBUG */
GPIOA->BSRR = 1<<11;
float out;

29
controller/fw/src/serial.c
View file

@ -11,6 +11,8 @@
static void usart_schedule_dma(volatile struct usart_desc *us);
static void usart_dma_reset(volatile struct usart_desc *us);
static void usart_putc_nonblocking_tpf(void *us, char c);
static void usart_wait_chunk_free(volatile struct usart_desc *us);
static void usart_putc_blocking_tpf(void *us, char c);
void usart_dma_reset(volatile struct usart_desc *us) {
us->tx_buf.xfr_start = -1;
@ -117,10 +119,24 @@ int usart_putc_nonblocking(volatile struct usart_desc *us, char c) {
return 0;
}
int usart_putc_blocking(volatile struct usart_desc *us, char c) {
volatile struct dma_tx_buf *buf = &us->tx_buf;
while (buf->wr_pos == buf->xfr_start)
;
buf->data[buf->wr_pos] = c;
buf->wr_pos = (buf->wr_pos + 1) % sizeof(us->data);
return 0;
}
void usart_putc_nonblocking_tpf(void *us, char c) {
usart_putc_nonblocking((struct usart_desc *)us, c);
}
void usart_putc_blocking_tpf(void *us, char c) {
usart_putc_blocking((struct usart_desc *)us, c);
}
int usart_send_chunk_nonblocking(volatile struct usart_desc *us, const char *chunk, size_t chunk_len) {
for (size_t i=0; i<chunk_len; i++)
@ -129,6 +145,11 @@ int usart_send_chunk_nonblocking(volatile struct usart_desc *us, const char *chu
return usart_flush(us);
}
void usart_wait_chunk_free(volatile struct usart_desc *us) {
while (us->tx_buf.chunk_end[us->tx_buf.wr_idx] != -1)
;
}
int usart_flush(volatile struct usart_desc *us) {
/* Find a free slot for this chunk */
if (us->tx_buf.chunk_end[us->tx_buf.wr_idx] != -1) {
@ -151,3 +172,11 @@ int usart_printf(volatile struct usart_desc *us, char *fmt, ...) {
return usart_flush(us);
}
int usart_printf_blocking(volatile struct usart_desc *us, char *fmt, ...) {
va_list va;
va_start(va, fmt);
tfp_format((void *)us, usart_putc_blocking_tpf, fmt, va);
usart_wait_chunk_free(us);
return usart_flush(us);
}

2
controller/fw/src/serial.h
View file

@ -74,9 +74,11 @@ struct usart_desc {
void usart_dma_init(volatile struct usart_desc *us, unsigned int baudrate);
int usart_send_chunk_nonblocking(volatile struct usart_desc *us, const char *chunk, size_t chunk_len);
int usart_putc_nonblocking(volatile struct usart_desc *us, char c);
int usart_putc_blocking(volatile struct usart_desc *us, char c);
void usart_dma_stream_irq(volatile struct usart_desc *us);
int usart_flush(volatile struct usart_desc *us);
int usart_printf(volatile struct usart_desc *us, char *fmt, ...);
int usart_printf_blocking(volatile struct usart_desc *us, char *fmt, ...);
#endif // __SERIAL_H__