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rp2: Integrate soft_timer using the alarm pool.

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The alarm pool is used to schedule the callback to soft_timer_handler().

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2023-11-14 13:21:13 +11:00
parent 516cc280e0
commit c9a9b2e682
5 changed files with 31 additions and 0 deletions
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23
ports/rp2/mphalport.c
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@@ -29,8 +29,10 @@
#include "py/mphal.h"
#include "extmod/misc.h"
#include "shared/runtime/interrupt_char.h"
#include "shared/runtime/softtimer.h"
#include "shared/timeutils/timeutils.h"
#include "shared/tinyusb/mp_usbd.h"
#include "pendsv.h"
#include "tusb.h"
#include "uart.h"
#include "hardware/rtc.h"
@@ -44,6 +46,8 @@
// microseconds since the Epoch.
STATIC uint64_t time_us_64_offset_from_epoch;
static alarm_id_t soft_timer_alarm_id = 0;
#if MICROPY_HW_ENABLE_UART_REPL || MICROPY_HW_USB_CDC
#ifndef MICROPY_HW_STDIN_BUFFER_LEN
@@ -260,3 +264,22 @@ void mp_hal_get_mac_ascii(int idx, size_t chr_off, size_t chr_len, char *dest) {
uint32_t storage_read_blocks(uint8_t *dest, uint32_t block_num, uint32_t num_blocks) {
panic_unsupported();
}
static int64_t soft_timer_callback(alarm_id_t id, void *user_data) {
soft_timer_alarm_id = 0;
pendsv_schedule_dispatch(PENDSV_DISPATCH_SOFT_TIMER, soft_timer_handler);
return 0; // don't reschedule this alarm
}
uint32_t soft_timer_get_ms(void) {
return mp_hal_ticks_ms();
}
void soft_timer_schedule_at_ms(uint32_t ticks_ms) {
if (soft_timer_alarm_id != 0) {
cancel_alarm(soft_timer_alarm_id);
}
int32_t ms = soft_timer_ticks_diff(ticks_ms, mp_hal_ticks_ms());
ms = MAX(0, ms);
soft_timer_alarm_id = add_alarm_in_ms(ms, soft_timer_callback, NULL, true);
}