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esp8266/esp_mphal: Make atomic section more atomic. 

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
View File

@ -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

8
ports/esp8266/mpconfigport.h
View File

@ -126,9 +126,8 @@
#define MICROPY_VM_HOOK_LOOP MICROPY_VM_HOOK_POLL
#define MICROPY_VM_HOOK_RETURN MICROPY_VM_HOOK_POLL
#include "xtirq.h"
#define MICROPY_BEGIN_ATOMIC_SECTION() disable_irq()
#define MICROPY_END_ATOMIC_SECTION(state) enable_irq(state)
#define MICROPY_BEGIN_ATOMIC_SECTION() esp_disable_irq()
#define MICROPY_END_ATOMIC_SECTION(state) esp_enable_irq(state)
// type definitions for the specific machine
@ -173,3 +172,6 @@ extern const struct _mp_print_t mp_debug_print;
#define WDEV_HWRNG ((volatile uint32_t *)0x3ff20e44)
#define _assert(expr) ((expr) ? (void)0 : __assert_func(__FILE__, __LINE__, __func__, #expr))
uint32_t esp_disable_irq(void);
void esp_enable_irq(uint32_t state);