diff options
Diffstat (limited to 'libmaple/util.c')
| -rw-r--r-- | libmaple/util.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libmaple/util.c b/libmaple/util.c index 11f9b34..481cd60 100644 --- a/libmaple/util.c +++ b/libmaple/util.c @@ -34,6 +34,21 @@ #include "adc.h" #include "timers.h" +/* Failed asserts send out a message on this USART. */ +#ifndef ERROR_USART_NUM +#define ERROR_USART_NUM USART2 +#define ERROR_USART_BAUD 9600 +#define ERROR_TX_PORT GPIOA_BASE +#define ERROR_TX_PIN 2 +#endif + +/* If you define ERROR_LED_PORT and ERROR_LED_PIN, then a failed + assert will also throb an LED connected to that port an pin. + FIXME this should work together with wirish somehow. */ +#if defined(ERROR_LED_PORT) && defined(ERROR_LED_PIN) +#define HAVE_ERROR_LED +#endif + /* Error assert + fade */ void _fail(const char* file, int line, const char* exp) { int32 slope = 1; @@ -67,8 +82,10 @@ void _fail(const char* file, int line, const char* exp) { usart_putc(ERROR_USART_NUM, '\n'); usart_putc(ERROR_USART_NUM, '\r'); +#ifdef HAVE_ERROR_LED /* Turn on the error LED */ gpio_set_mode(ERROR_LED_PORT, ERROR_LED_PIN, GPIO_MODE_OUTPUT_PP); +#endif /* Turn the USB interrupt back on so the bootloader keeps on functioning */ nvic_irq_enable(NVIC_INT_USBHP); @@ -79,6 +96,7 @@ void _fail(const char* file, int line, const char* exp) { } void throb(void) { +#ifdef HAVE_ERROR_LED int32 slope = 1; uint32 CC = 0x0000; uint32 TOP_CNT = 0x0200; @@ -105,5 +123,10 @@ void throb(void) { } i++; } +#else + /* No error LED is connected; do nothing. */ + while (1) + ; +#endif } |