diff options
| -rw-r--r-- | ports/stm32/mboot/main.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/ports/stm32/mboot/main.c b/ports/stm32/mboot/main.c index a77060ab2..c82e460fa 100644 --- a/ports/stm32/mboot/main.c +++ b/ports/stm32/mboot/main.c @@ -95,6 +95,9 @@ // These bits are used to detect valid application firmware at APPLICATION_ADDR #define APP_VALIDITY_BITS (0x00000003) +// For 1ms system ticker. +static volatile uint32_t systick_ms; + // Global dfu state dfu_context_t dfu_context SECTION_NOZERO_BSS; @@ -104,6 +107,10 @@ uint32_t get_le32(const uint8_t *b) { return b[0] | b[1] << 8 | b[2] << 16 | b[3] << 24; } +mp_uint_t mp_hal_ticks_ms(void) { + return systick_ms; +} + void mp_hal_delay_us(mp_uint_t usec) { // use a busy loop for the delay // sys freq is always a multiple of 2MHz, so division here won't lose precision @@ -113,11 +120,10 @@ void mp_hal_delay_us(mp_uint_t usec) { const uint32_t ucount = SystemCoreClock / 2000000 * usec / 2; #endif for (uint32_t count = 0; ++count <= ucount;) { + __NOP(); } } -static volatile uint32_t systick_ms; - void mp_hal_delay_ms(mp_uint_t ms) { if (__get_PRIMASK() == 0) { // IRQs enabled, use systick |