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194 lines (174 loc) · 5 KB
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Copy pathets_alt_task.c
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194 lines (174 loc) · 5 KB
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#include <stdio.h>
#include "osapi.h"
#include "os_type.h"
#include "ets_sys.h"
#include <esp_sdk_ver.h>
#include "etshal.h"
#include "user_interface.h"
// Use standard ets_task or alternative impl
#define USE_ETS_TASK 0
#define MP_ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
struct task_entry {
os_event_t *queue;
os_task_t task;
uint8_t qlen;
uint8_t prio;
int8_t i_get;
int8_t i_put;
};
static void (*idle_cb)(void *);
static void *idle_arg;
#if ESP_SDK_VERSION >= 010500
# define FIRST_PRIO 0
#else
# define FIRST_PRIO 0x14
#endif
#define LAST_PRIO 0x20
#define PRIO2ID(prio) ((prio) - FIRST_PRIO)
volatile struct task_entry emu_tasks[PRIO2ID(LAST_PRIO) + 1];
static inline int prio2id(uint8_t prio) {
int id = PRIO2ID(prio);
if (id < 0 || id >= MP_ARRAY_SIZE(emu_tasks)) {
printf("task prio out of range: %d\n", prio);
while (1);
}
return id;
}
#if DEBUG
void dump_task(int prio, volatile struct task_entry *t) {
printf("q for task %d: queue: %p, get ptr: %d, put ptr: %d, qlen: %d\n",
prio, t->queue, t->i_get, t->i_put, t->qlen);
}
void dump_tasks(void) {
for (int i = 0; i < MP_ARRAY_SIZE(emu_tasks); i++) {
if (emu_tasks[i].qlen) {
dump_task(i + FIRST_PRIO, &emu_tasks[i]);
}
}
printf("====\n");
}
#endif
bool ets_task(os_task_t task, uint8 prio, os_event_t *queue, uint8 qlen) {
static unsigned cnt;
printf("#%d ets_task(%p, %d, %p, %d)\n", cnt++, task, prio, queue, qlen);
#if USE_ETS_TASK
return _ets_task(task, prio, queue, qlen);
#else
int id = prio2id(prio);
emu_tasks[id].task = task;
emu_tasks[id].queue = queue;
emu_tasks[id].qlen = qlen;
emu_tasks[id].i_get = 0;
emu_tasks[id].i_put = 0;
return true;
#endif
}
bool ets_post(uint8 prio, os_signal_t sig, os_param_t param) {
// static unsigned cnt; printf("#%d ets_post(%d, %x, %x)\n", cnt++, prio, sig, param);
#if USE_ETS_TASK
return _ets_post(prio, sig, param);
#else
ets_intr_lock();
const int id = prio2id(prio);
os_event_t *q = emu_tasks[id].queue;
if (emu_tasks[id].i_put == -1) {
// queue is full
printf("ets_post: task %d queue full\n", prio);
return false;
}
q = &q[emu_tasks[id].i_put++];
q->sig = sig;
q->par = param;
if (emu_tasks[id].i_put == emu_tasks[id].qlen) {
emu_tasks[id].i_put = 0;
}
if (emu_tasks[id].i_put == emu_tasks[id].i_get) {
// queue got full
emu_tasks[id].i_put = -1;
}
//printf("after ets_post: "); dump_task(prio, &emu_tasks[id]);
//dump_tasks();
ets_intr_unlock();
return true;
#endif
}
bool ets_loop_iter(void) {
//static unsigned cnt;
bool progress = false;
for (volatile struct task_entry *t = emu_tasks; t < &emu_tasks[MP_ARRAY_SIZE(emu_tasks)]; t++) {
system_soft_wdt_feed();
ets_intr_lock();
//printf("etc_loop_iter: "); dump_task(t - emu_tasks + FIRST_PRIO, t);
if (t->i_get != t->i_put) {
progress = true;
//printf("#%d Calling task %d(%p) (%x, %x)\n", cnt++,
// t - emu_tasks + FIRST_PRIO, t->task, t->queue[t->i_get].sig, t->queue[t->i_get].par);
int idx = t->i_get;
if (t->i_put == -1) {
t->i_put = t->i_get;
}
if (++t->i_get == t->qlen) {
t->i_get = 0;
}
//ets_intr_unlock();
t->task(&t->queue[idx]);
//ets_intr_lock();
//printf("Done calling task %d\n", t - emu_tasks + FIRST_PRIO);
}
ets_intr_unlock();
}
return progress;
}
#if SDK_BELOW_1_1_1
void my_timer_isr(void *arg) {
// uart0_write_char('+');
ets_post(0x1f, 0, 0);
}
// Timer init func is in ROM, and calls ets_task by relative addr directly in ROM
// so, we have to re-init task using our handler
void ets_timer_init() {
printf("ets_timer_init\n");
// _ets_timer_init();
ets_isr_attach(10, my_timer_isr, NULL);
SET_PERI_REG_MASK(0x3FF00004, 4);
ETS_INTR_ENABLE(10);
ets_task((os_task_t)0x40002E3C, 0x1f, (os_event_t*)0x3FFFDDC0, 4);
WRITE_PERI_REG(PERIPHS_TIMER_BASEDDR + 0x30, 0);
WRITE_PERI_REG(PERIPHS_TIMER_BASEDDR + 0x28, 0x88);
WRITE_PERI_REG(PERIPHS_TIMER_BASEDDR + 0x30, 0);
printf("Installed timer ISR\n");
}
#endif
bool ets_run(void) {
#if USE_ETS_TASK
#if SDK_BELOW_1_1_1
ets_isr_attach(10, my_timer_isr, NULL);
#endif
_ets_run();
#else
// ets_timer_init();
*(char*)0x3FFFC6FC = 0;
ets_intr_lock();
printf("ets_alt_task: ets_run\n");
#if DEBUG
dump_tasks();
#endif
ets_intr_unlock();
while (1) {
if (!ets_loop_iter()) {
//printf("idle\n");
ets_intr_lock();
if (idle_cb) {
idle_cb(idle_arg);
}
asm("waiti 0");
ets_intr_unlock();
}
}
#endif
}
void ets_set_idle_cb(void (*handler)(void *), void *arg) {
//printf("ets_set_idle_cb(%p, %p)\n", handler, arg);
idle_cb = handler;
idle_arg = arg;
}