diff options
Diffstat (limited to 'firmware/src/simtrace/main_simtrace.c')
| -rw-r--r-- | firmware/src/simtrace/main_simtrace.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/firmware/src/simtrace/main_simtrace.c b/firmware/src/simtrace/main_simtrace.c index 6f82d96..8069349 100644 --- a/firmware/src/simtrace/main_simtrace.c +++ b/firmware/src/simtrace/main_simtrace.c @@ -134,10 +134,40 @@ static int simtrace_usb_in(struct req_ctx *rctx) req_ctx_set_state(rctx, RCTX_STATE_FREE); break; } + return 0; +} + +static volatile unsigned spuirq_pc, spuirq_count = 0; + +static void check_spurious_irq() +{ + static unsigned last_count = 0; + if (last_count != spuirq_count) { + DEBUGPCR("SPURRIOUS IRQ %i [Old PC = %08X]", spuirq_count, spuirq_pc); + last_count = spuirq_count; + } +} + +static void custom_spurious_handler(unsigned previous_pc) +{ + unsigned flags; + local_irq_save(flags); + spuirq_pc = previous_pc; + spuirq_count++; + local_irq_restore(flags); +} + +static void custom_spurious_entry(void) +{ + register unsigned *previous_pc asm("r0"); + asm("ADD R1, SP, #16; LDR R0, [R1]"); + custom_spurious_handler(previous_pc); } void _init_func(void) { + AT91C_BASE_AIC->AIC_SPU = (int)custom_spurious_entry; + /* low-level hardware initialization */ pio_irq_init(); iso_uart_init(); @@ -218,6 +248,8 @@ int _main_dbgu(char key) void _main_func(void) { + static unsigned loopLow = 0, loopHigh = 0; + /* first we try to get rid of pending to-be-sent stuff */ usb_out_process(); @@ -225,4 +257,15 @@ void _main_func(void) usb_in_process(); udp_unthrottle(); + + if ((loopLow & 0xFFFF) == 0) { + DEBUGPCR("Heart beat %08X", loopHigh++); + } + if ((loopLow & 0x3F) == 0) { + iso_uart_idleflush(); + } + loopLow++; + + iso_uart_report_errors(); + check_spurious_irq(); } |