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esp8266/esp_mphal: Make atomic section more atomic.

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By disabling ets_loop_iter when the atomic section is active.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2023-11-27 12:00:16 +11:00
parent 4bf7987f0a
commit 39d4153a8d
2 changed files with 20 additions and 3 deletions
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15
ports/esp8266/esp_mphal.c
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@@ -166,6 +166,21 @@ void mp_hal_signal_dupterm_input(void) {
system_os_post(DUPTERM_TASK_ID, 0, 0);
}
// this bit is unused in the Xtensa PS register
#define ETS_LOOP_ITER_BIT (12)
uint32_t esp_disable_irq(void) {
uint32_t state = disable_irq();
state = (state & ~(1 << ETS_LOOP_ITER_BIT)) | (ets_loop_iter_disable << ETS_LOOP_ITER_BIT);
ets_loop_iter_disable = 1;
return state;
}
void esp_enable_irq(uint32_t state) {
ets_loop_iter_disable = (state >> ETS_LOOP_ITER_BIT) & 1;
enable_irq(state & ~(1 << ETS_LOOP_ITER_BIT));
}
// Get pointer to esf_buf bookkeeping structure
void *ets_get_esf_buf_ctlblk(void) {
// Get literal ptr before start of esf_rx_buf_alloc func