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samd/samd_isr: Extend systick_ms to 64 bit.

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By adding a 32 bit overflow counter.  This allows it to be used for the
time functions.
This commit is contained in:
robert-hh
2022-06-04 20:23:56 +02:00
committed by Damien George
parent 3d9940bc28
commit 98ae312640
1 changed files with 6 additions and 1 deletions
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7
ports/samd/samd_isr.c
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@@ -32,6 +32,7 @@ extern uint32_t _estack, _sidata, _sdata, _edata, _sbss, _ebss;
const ISR isr_vector[];
uint32_t systick_ms;
volatile uint32_t systick_ms_upper;
void Reset_Handler(void) __attribute__((naked));
void Reset_Handler(void) {
@@ -81,7 +82,11 @@ void Default_Handler(void) {
}
void SysTick_Handler(void) {
systick_ms += 1;
uint32_t next_tick = systick_ms + 1;
systick_ms = next_tick;
if (systick_ms == 0) {
systick_ms_upper += 1;
}
}
const ISR isr_vector[] __attribute__((section(".isr_vector"))) = {