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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <esp_timer.h>
#include <esp_log.h>
#include "eos.h"
#include "net.h"
#include "at_cmd.h"
#include "cell.h"
static const char *TAG = "EOS CELL VOICE";
extern char *at_cmd_buf;
void eos_cell_voice_handler(unsigned char mtype, unsigned char *buffer, uint16_t buf_len) {
int rv;
buffer++;
buf_len--;
switch (mtype) {
case EOS_CELL_MTYPE_VOICE_DIAL: {
if (buf_len > EOS_CELL_SIZE_PHNUM) return;
buffer[buf_len] = '\0';
rv = snprintf(at_cmd_buf, AT_SIZE_CMD_BUF, "ATD%s;\r", buffer);
if ((rv < 0) || (rv >= AT_SIZE_CMD_BUF)) return;
rv = eos_modem_take(1000);
if (rv) return;
at_cmd(at_cmd_buf);
rv = at_expect("^OK", "^(ERROR|\\+CME ERROR: [0-9]+)", 1000);
eos_modem_give();
eos_cell_pcm_start();
break;
}
case EOS_CELL_MTYPE_VOICE_ANSWER: {
rv = eos_modem_take(1000);
if (rv) return;
at_cmd("ATA\r");
// Response will be picked up by urc handler
eos_modem_give();
eos_cell_pcm_start();
break;
}
case EOS_CELL_MTYPE_VOICE_HANGUP: {
eos_cell_pcm_stop();
rv = eos_modem_take(1000);
if (rv) return;
at_cmd("AT+CHUP\r");
// Response will be picked up by urc handler
eos_modem_give();
break;
}
case EOS_CELL_MTYPE_VOICE_PCM: {
eos_cell_pcm_push(buffer, buf_len);
break;
}
}
}
static void ring_handler(char *urc, regmatch_t m[]) {
unsigned char *buf;
char *ring_buf;
uint16_t len;
regmatch_t match[2];
int rv = EOS_OK;
buf = eos_net_alloc();
buf[0] = EOS_CELL_MTYPE_VOICE | EOS_CELL_MTYPE_VOICE_RING;
len = 1;
rv = at_expect_match("^\\+CLIP: \"(\\+?[0-9]+)\"", NULL, &ring_buf, match, 2, REG_EXTENDED, 1000);
if (!rv) {
regoff_t num_len;
num_len = match[1].rm_eo - match[1].rm_so;
if (num_len > EOS_CELL_SIZE_PHNUM) {
eos_net_free(buf);
return;
}
memcpy(buf + 1, ring_buf + match[1].rm_so, num_len);
len += num_len;
}
rv = eos_net_send(EOS_NET_MTYPE_CELL, buf, len);
if (rv) ESP_LOGE(TAG, "NET SEND ERR:%d", rv);
}
static void busy_handler(char *urc, regmatch_t m[]) {
unsigned char *buf;
uint16_t len;
int rv;
eos_cell_pcm_stop();
buf = eos_net_alloc();
buf[0] = EOS_CELL_MTYPE_VOICE | EOS_CELL_MTYPE_VOICE_BUSY;
len = 1;
rv = eos_net_send(EOS_NET_MTYPE_CELL, buf, len);
if (rv) ESP_LOGE(TAG, "NET SEND ERR:%d", rv);
}
static void miss_handler(char *urc, regmatch_t m[]) {
unsigned char *buf;
uint16_t len;
int rv;
eos_cell_pcm_stop();
buf = eos_net_alloc();
buf[0] = EOS_CELL_MTYPE_VOICE | EOS_CELL_MTYPE_VOICE_MISS;
len = 1;
rv = eos_net_send(EOS_NET_MTYPE_CELL, buf, len);
if (rv) ESP_LOGE(TAG, "NET SEND ERR:%d", rv);
}
static void call_begin_handler(char *urc, regmatch_t m[]) {
unsigned char *buf;
int rv;
vTaskDelay(100 / portTICK_PERIOD_MS);
at_cmd("AT+CECH=0x0000\r");
at_expect("^OK", "^ERROR", 1000);
at_cmd("AT+CECDT=0x0000\r");
at_expect("^OK", "^ERROR", 1000);
at_cmd("AT+CECWB=0x0000\r");
at_expect("^OK", "^ERROR", 1000);
at_cmd("AT+CNSLIM=0x0000\r");
at_expect("^OK", "^ERROR", 1000);
/*
at_cmd("AT+CECRX=0\r");
at_expect("^OK", "^ERROR", 1000);
*/
buf = eos_net_alloc();
buf[0] = EOS_CELL_MTYPE_VOICE | EOS_CELL_MTYPE_VOICE_BEGIN;
rv = eos_net_send(EOS_NET_MTYPE_CELL, buf, 1);
if (rv) ESP_LOGE(TAG, "NET SEND ERR:%d", rv);
}
static void call_end_handler(char *urc, regmatch_t m[]) {
unsigned char *buf;
int duration = 0;
int rv;
eos_cell_pcm_stop();
sscanf(urc + m[1].rm_so, "%6d", &duration);
buf = eos_net_alloc();
buf[0] = EOS_CELL_MTYPE_VOICE | EOS_CELL_MTYPE_VOICE_END;
buf[1] = duration >> 24;
buf[2] = duration >> 16;
buf[3] = duration >> 8;
buf[4] = duration;
rv = eos_net_send(EOS_NET_MTYPE_CELL, buf, 5);
if (rv) ESP_LOGE(TAG, "NET SEND ERR:%d", rv);
}
void eos_cell_voice_init(void) {
int rv;
rv = at_urc_insert("^RING", ring_handler, REG_EXTENDED);
assert(rv == EOS_OK);
rv = at_urc_insert("^BUSY", busy_handler, REG_EXTENDED);
assert(rv == EOS_OK);
rv = at_urc_insert("^NO CARRIER", miss_handler, REG_EXTENDED);
assert(rv == EOS_OK);
rv = at_urc_insert("^MISSED.CALL: [^ ]+ (\\+?[0-9]+)$", miss_handler, REG_EXTENDED);
assert(rv == EOS_OK);
rv = at_urc_insert("^VOICE CALL: BEGIN", call_begin_handler, REG_EXTENDED);
assert(rv == EOS_OK);
rv = at_urc_insert("^VOICE CALL: END: ([0-9]{6}$)$", call_end_handler, REG_EXTENDED);
assert(rv == EOS_OK);
}
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