diff options
Diffstat (limited to 'code/esp32/components/eos/cell_modem.c')
| -rw-r--r-- | code/esp32/components/eos/cell_modem.c | 767 |
1 files changed, 0 insertions, 767 deletions
diff --git a/code/esp32/components/eos/cell_modem.c b/code/esp32/components/eos/cell_modem.c deleted file mode 100644 index c6d718f..0000000 --- a/code/esp32/components/eos/cell_modem.c +++ /dev/null @@ -1,767 +0,0 @@ -#include <stdlib.h> -#include <string.h> - -#include <freertos/FreeRTOS.h> -#include <freertos/semphr.h> -#include <freertos/task.h> -#include <freertos/queue.h> -#include <netif/ppp/pppos.h> -#include <netif/ppp/pppapi.h> -#include <driver/uart.h> -#include <driver/gpio.h> -#include <esp_sleep.h> -#include <esp_log.h> - -#include "eos.h" -#include "net.h" -#include "power.h" - -#include "at_cmd.h" -#include "cell.h" - -// XXX: PPP reconnect on failure - -#define UART_SIZE_IO_BUF 1024 - -#define UART_GPIO_TXD 16 -#define UART_GPIO_RXD 17 -#define UART_GPIO_DTR 32 -#define UART_GPIO_RI 35 - -#define MODEM_ETYPE_INIT 1 -#define MODEM_ETYPE_RI 2 - -#define AT_CMD_INIT_SIZE 3 - -#define MIN(X, Y) (((X) < (Y)) ? (X) : (Y)) -#define MAX(X, Y) (((X) > (Y)) ? (X) : (Y)) - -static const char *TAG = "EOS MODEM"; - -static char *at_cmd_init[AT_CMD_INIT_SIZE] = { - "AT+CFGRI=1\r", - "AT+CSCLK=1\r", - "AT+CMGF=0\r" -}; - -static SemaphoreHandle_t mutex; - -static QueueHandle_t modem_queue; -static QueueHandle_t uart_queue; - -static char urc_buf[EOS_CELL_UART_SIZE_BUF]; -static char uart_buf[EOS_CELL_UART_SIZE_BUF]; -static size_t uart_buf_len; - -static uint8_t uart_mode = EOS_CELL_UART_MODE_ATCMD; -static SemaphoreHandle_t uart_mutex; - -static char ppp_apn[64]; -static char ppp_user[64]; -static char ppp_pass[64]; -static SemaphoreHandle_t ppp_mutex; - -static ppp_pcb *ppp_handle; -static struct netif ppp_netif; - -typedef enum { - UART_EEVT_MODE = UART_EVENT_MAX -} uart_eevt_type_t; - -typedef struct { - uint8_t type; -} modem_event_t; - -static void modem_atcmd_read(size_t bsize); - -static void uart_data_read(uint8_t mode) { - unsigned char *buf; - int rd; - size_t bsize; - - uart_get_buffered_data_len(UART_NUM_2, &bsize); - switch (mode) { - case EOS_CELL_UART_MODE_ATCMD: - modem_atcmd_read(bsize); - break; - - case EOS_CELL_UART_MODE_PPP: - rd = 0; - - do { - int _rd = eos_modem_read(uart_buf, MIN(bsize - rd, sizeof(uart_buf)), 100); - pppos_input_tcpip(ppp_handle, (uint8_t *)uart_buf, _rd); - rd += _rd; - } while (rd != bsize); - break; - - case EOS_CELL_UART_MODE_RELAY: - rd = 0; - - do { - int _rd; - - buf = eos_net_alloc(); - buf[0] = EOS_CELL_MTYPE_UART_DATA; - _rd = eos_modem_read(buf + 1, MIN(bsize - rd, EOS_NET_SIZE_BUF - 1), 100); - eos_net_send(EOS_NET_MTYPE_CELL, buf, _rd + 1, 0); - rd += _rd; - } while (rd != bsize); - break; - - default: - break; - - } -} - -static void uart_event_task(void *pvParameters) { - char mode = EOS_CELL_UART_MODE_ATCMD; - char _mode = EOS_CELL_UART_MODE_ATCMD; - uart_event_t event; - - xSemaphoreTake(uart_mutex, portMAX_DELAY); - while (1) { - /* Waiting for UART event. - */ - if (xQueueReceive(uart_queue, &event, portMAX_DELAY)) { - switch (event.type) { - case UART_DATA: - /* Event of UART receiving data - */ - if (mode != EOS_CELL_UART_MODE_NONE) uart_data_read(mode); - if ((mode != _mode) && (uart_buf_len == 0)) { - if (_mode == EOS_CELL_UART_MODE_NONE) xSemaphoreGive(uart_mutex); - mode = _mode; - } - break; - - case UART_EEVT_MODE: - /* Mode change - */ - _mode = (char)event.size; - if ((_mode != mode) && ((uart_buf_len == 0) || (mode == EOS_CELL_UART_MODE_NONE))) { - if (mode == EOS_CELL_UART_MODE_NONE) { - xSemaphoreTake(uart_mutex, portMAX_DELAY); - uart_data_read(_mode); - } - if (_mode == EOS_CELL_UART_MODE_NONE) xSemaphoreGive(uart_mutex); - mode = _mode; - } - break; - - default: - break; - } - } - } - vTaskDelete(NULL); -} - -static void IRAM_ATTR uart_ri_isr_handler(void *arg) { - modem_event_t evt; - - evt.type = MODEM_ETYPE_RI; - xQueueSendFromISR(modem_queue, &evt, NULL); -} - -static int modem_atcmd_init(void) { - unsigned char *buf; - int echo_on = 0; - int tries = 3; - int i, r; - int rv = EOS_OK; - - rv = eos_modem_take(1000); - if (rv) return rv; - - do { - at_cmd("AT\r"); - r = at_expect("^AT", "^OK", 1000); - if (r >= 0) { - echo_on = r; - if (echo_on) { - r = at_expect("^OK", NULL, 1000); - } - break; - } - tries--; - } while (tries); - - if (tries == 0) { - eos_modem_give(); - return EOS_ERR_TIMEOUT; - } - - if (echo_on) { - at_cmd("AT&F\r"); - r = at_expect("^AT&F", NULL, 1000); - r = at_expect("^OK", NULL, 1000); - } else { - at_cmd("AT&F\r"); - r = at_expect("^OK", NULL, 1000); - - } - at_cmd("ATE0\r"); - r = at_expect("^ATE0", NULL, 1000); - r = at_expect("^OK", "^ERROR", 1000); - - for (i=0; i<AT_CMD_INIT_SIZE; i++) { - at_cmd(at_cmd_init[i]); - r = at_expect("^OK", "^ERROR", 1000); - } - - buf = eos_net_alloc(); - buf[0] = EOS_CELL_MTYPE_READY; - eos_net_send(EOS_NET_MTYPE_CELL, buf, 1, 0); - - eos_modem_give(); - - return EOS_OK; -} - -static void modem_atcmd_read(size_t bsize) { - char *ln_end; - int rd = 0; - - do { - char *uart_curr = uart_buf + uart_buf_len; - int _rd = eos_modem_read(uart_curr, MIN(bsize - rd, sizeof(uart_buf) - uart_buf_len - 1), 100); - - rd += _rd; - uart_buf_len += _rd; - uart_buf[uart_buf_len] = '\0'; - while ((ln_end = strchr(uart_curr, '\n'))) { - size_t urc_buf_len = ln_end - uart_buf; - - if ((ln_end > uart_buf) && (*(ln_end - 1) == '\r')) urc_buf_len--; - memcpy(urc_buf, uart_buf, urc_buf_len); - urc_buf[urc_buf_len] = '\0'; - - uart_buf_len -= ln_end - uart_buf + 1; - if (uart_buf_len) memmove(uart_buf, ln_end + 1, uart_buf_len); - uart_curr = uart_buf; - uart_buf[uart_buf_len] = '\0'; - - at_urc_process(urc_buf); - } - if (uart_buf_len == sizeof(uart_buf) - 1) { - uart_buf_len = 0; - memcpy(urc_buf, uart_buf, sizeof(urc_buf)); - at_urc_process(urc_buf); - } - } while (rd != bsize); -} - -int modem_urc_init_handler(char *urc, regmatch_t *m) { - modem_event_t evt; - - evt.type = MODEM_ETYPE_INIT; - xQueueSend(modem_queue, &evt, portMAX_DELAY); - - return AT_URC_OK; -} - -static void modem_set_mode(uint8_t mode) { - uart_event_t evt; - - evt.type = UART_EEVT_MODE; - evt.size = mode; - xQueueSend(uart_queue, &evt, portMAX_DELAY); -} - -static void modem_event_task(void *pvParameters) { - modem_event_t evt; - - while (1) { - if (xQueueReceive(modem_queue, &evt, portMAX_DELAY)) { - switch (evt.type) { - case MODEM_ETYPE_INIT: - modem_atcmd_init(); - break; - - case MODEM_ETYPE_RI: - ESP_LOGI(TAG, "URC from RI"); - break; - - default: - break; - } - - /* Obsolete!!! - uint64_t t_start = esp_timer_get_time(); - if (xQueueReceive(modem_queue, &level, 200 / portTICK_RATE_MS) && (level == 1)) { - uint64_t t_end = esp_timer_get_time(); - ESP_LOGI(TAG, "URC:%u", (uint32_t)(t_end - t_start)); - } else { - ESP_LOGI(TAG, "RING"); - } - */ - - } - } - vTaskDelete(NULL); -} - -static char *memstr(char *mem, size_t size, char *str) { - size_t i = 0; - char *max_mem; - - if (str[0] == '\0') return NULL; - - max_mem = mem + size; - - while (mem < max_mem) { - if (*mem != str[i]) { - mem -= i; - i = 0; - } else { - if (str[i+1] == '\0') return mem - i; - i++; - } - mem++; - } - - return NULL; -} - -static uint32_t ppp_output_cb(ppp_pcb *pcb, uint8_t *data, uint32_t len, void *ctx) { - size_t rv; - - xSemaphoreTake(ppp_mutex, portMAX_DELAY); - rv = eos_modem_write(data, len); - xSemaphoreGive(ppp_mutex); - - return rv; -} - -/* PPP status callback */ -static void ppp_status_cb(ppp_pcb *pcb, int err_code, void *ctx) { - // struct netif *pppif = ppp_netif(pcb); - // LWIP_UNUSED_ARG(ctx); - - switch(err_code) { - case PPPERR_NONE: { - ESP_LOGE(TAG, "status_cb: Connect"); - break; - } - case PPPERR_PARAM: { - ESP_LOGE(TAG, "status_cb: Invalid parameter"); - break; - } - case PPPERR_OPEN: { - ESP_LOGE(TAG, "status_cb: Unable to open PPP session"); - break; - } - case PPPERR_DEVICE: { - ESP_LOGE(TAG, "status_cb: Invalid I/O device for PPP"); - break; - } - case PPPERR_ALLOC: { - ESP_LOGE(TAG, "status_cb: Unable to allocate resources"); - break; - } - case PPPERR_USER: { - ESP_LOGE(TAG, "status_cb: User interrupt"); - break; - } - case PPPERR_CONNECT: { - ESP_LOGE(TAG, "status_cb: Connection lost"); - break; - } - case PPPERR_AUTHFAIL: { - ESP_LOGE(TAG, "status_cb: Failed authentication challenge"); - break; - } - case PPPERR_PROTOCOL: { - ESP_LOGE(TAG, "status_cb: Failed to meet protocol"); - break; - } - case PPPERR_PEERDEAD: { - ESP_LOGE(TAG, "status_cb: Connection timeout"); - break; - } - case PPPERR_IDLETIMEOUT: { - ESP_LOGE(TAG, "status_cb: Idle Timeout"); - break; - } - case PPPERR_CONNECTTIME: { - ESP_LOGE(TAG, "status_cb: Max connect time reached"); - break; - } - case PPPERR_LOOPBACK: { - ESP_LOGE(TAG, "status_cb: Loopback detected"); - break; - } - default: { - ESP_LOGE(TAG, "status_cb: Unknown error code %d", err_code); - break; - } - } -} - -static int ppp_pause(uint32_t timeout, uint8_t retries) { - int done = 0; - int len = 0; - int rv = EOS_OK; - char *ok_str = NULL; - uint64_t t_start; - - timeout += 1000; - xSemaphoreTake(ppp_mutex, portMAX_DELAY); - eos_modem_flush(); - vTaskDelay(1000 / portTICK_PERIOD_MS); - modem_set_mode(EOS_CELL_UART_MODE_NONE); - xSemaphoreTake(uart_mutex, portMAX_DELAY); - at_cmd("+++"); - t_start = esp_timer_get_time(); - - do { - len = eos_modem_read(uart_buf + uart_buf_len, sizeof(uart_buf) - uart_buf_len, 10); - if (len > 0) { - if (uart_buf_len > 5) { - ok_str = memstr(uart_buf + uart_buf_len - 5, len + 5, "\r\nOK\r\n"); - } else { - ok_str = memstr(uart_buf, len + uart_buf_len, "\r\nOK\r\n"); - } - uart_buf_len += len; - } - if (ok_str) { - pppos_input_tcpip(ppp_handle, (uint8_t *)uart_buf, ok_str - uart_buf); - ok_str += 6; - uart_buf_len -= ok_str - uart_buf; - if (uart_buf_len) memmove(uart_buf, ok_str, uart_buf_len); - done = 1; - } else if (uart_buf_len == sizeof(uart_buf)) { - pppos_input_tcpip(ppp_handle, (uint8_t *)uart_buf, sizeof(uart_buf) / 2); - memcpy(uart_buf, uart_buf + sizeof(uart_buf) / 2, sizeof(uart_buf) / 2); - uart_buf_len = sizeof(uart_buf) / 2; - } - if (timeout && !done && ((uint32_t)((esp_timer_get_time() - t_start) / 1000) > timeout)) { - if (!retries) { - modem_set_mode(EOS_CELL_UART_MODE_PPP); - xSemaphoreGive(uart_mutex); - xSemaphoreGive(ppp_mutex); - rv = EOS_ERR_TIMEOUT; - done = 1; - } else { - retries--; - at_cmd("+++"); - t_start = esp_timer_get_time(); - } - } - } while (!done); - - return rv; -} - -static int ppp_resume(void) { - int r; - int rv = EOS_OK; - - at_cmd("ATO\r"); - r = at_expect("^CONNECT", "^(ERROR|NO CARRIER)", 1000); - if (r <= 0) rv = EOS_ERR; - - modem_set_mode(EOS_CELL_UART_MODE_PPP); - xSemaphoreGive(uart_mutex); - xSemaphoreGive(ppp_mutex); - - return rv; -} - -static int ppp_setup(void) { - int r; - char cmd[64]; - int cmd_len = snprintf(cmd, sizeof(cmd), "AT+CGDCONT=1,\"IP\",\"%s\"\r", ppp_apn); - - if ((cmd_len < 0) || (cmd_len >= sizeof(cmd))) return EOS_ERR; - - modem_set_mode(EOS_CELL_UART_MODE_NONE); - r = xSemaphoreTake(uart_mutex, 1000 / portTICK_PERIOD_MS); - if (r == pdFALSE) { - modem_set_mode(uart_mode); - return EOS_ERR_TIMEOUT; - } - - at_cmd(cmd); - r = at_expect("^OK", "^ERROR", 1000); - if (r <= 0) { - modem_set_mode(uart_mode); - xSemaphoreGive(uart_mutex); - return EOS_ERR; - } - - at_cmd("AT+CGDATA=\"PPP\",1\r"); - r = at_expect("^CONNECT", "^(ERROR|\\+CME ERROR|NO CARRIER)", 1000); - if (r <= 0) { - modem_set_mode(uart_mode); - xSemaphoreGive(uart_mutex); - return EOS_ERR; - } - - ppp_handle = pppapi_pppos_create(&ppp_netif, ppp_output_cb, ppp_status_cb, NULL); - ppp_set_usepeerdns(ppp_handle, 1); - pppapi_set_default(ppp_handle); - pppapi_set_auth(ppp_handle, PPPAUTHTYPE_PAP, ppp_user, ppp_pass); - pppapi_connect(ppp_handle, 0); - - modem_set_mode(EOS_CELL_UART_MODE_PPP); - xSemaphoreGive(uart_mutex); - - return EOS_OK; -} - -static int ppp_disconnect(void) { - int rv; - - pppapi_close(ppp_handle, 0); - - rv = ppp_pause(1000, 2); - if (rv) return rv; - - at_cmd("ATH\r"); - at_expect("^OK", NULL, 1000); - - xSemaphoreGive(uart_mutex); - xSemaphoreGive(ppp_mutex); - ppp_handle = NULL; - - return EOS_OK; -} - -void eos_modem_init(void) { - /* Configure parameters of an UART driver, - * communication pins and install the driver */ - uart_config_t uart_config = { - .baud_rate = 115200, - .data_bits = UART_DATA_8_BITS, - .parity = UART_PARITY_DISABLE, - .stop_bits = UART_STOP_BITS_1, - .flow_ctrl = UART_HW_FLOWCTRL_DISABLE - }; - uart_param_config(UART_NUM_2, &uart_config); - uart_set_pin(UART_NUM_2, UART_GPIO_TXD, UART_GPIO_RXD, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE); - uart_driver_install(UART_NUM_2, UART_SIZE_IO_BUF, UART_SIZE_IO_BUF, 10, &uart_queue, 0); - - // Configuration for the DTR/RI lines - gpio_config_t io_conf; - - io_conf.intr_type = GPIO_INTR_DISABLE; - io_conf.mode = GPIO_MODE_OUTPUT; - io_conf.pin_bit_mask = ((uint64_t)1 << UART_GPIO_DTR); - io_conf.pull_up_en = 0; - io_conf.pull_down_en = 0; - gpio_config(&io_conf); - gpio_set_level(UART_GPIO_DTR, 0); - - io_conf.intr_type = GPIO_INTR_NEGEDGE; - io_conf.mode = GPIO_MODE_INPUT; - io_conf.pin_bit_mask = ((uint64_t)1 << UART_GPIO_RI); - io_conf.pull_up_en = 0; - io_conf.pull_down_en = 0; - gpio_config(&io_conf); - - mutex = xSemaphoreCreateBinary(); - xSemaphoreGive(mutex); - - uart_mutex = xSemaphoreCreateBinary(); - xSemaphoreGive(uart_mutex); - - ppp_mutex = xSemaphoreCreateBinary(); - xSemaphoreGive(ppp_mutex); - - modem_queue = xQueueCreate(4, sizeof(modem_event_t)); - xTaskCreate(uart_event_task, "uart_event", EOS_TASK_SSIZE_UART, NULL, EOS_TASK_PRIORITY_UART, NULL); - xTaskCreate(modem_event_task, "modem_event", EOS_TASK_SSIZE_MODEM, NULL, EOS_TASK_PRIORITY_MODEM, NULL); - - gpio_isr_handler_add(UART_GPIO_RI, uart_ri_isr_handler, NULL); - - at_init(); - at_urc_insert("^PB DONE", modem_urc_init_handler, REG_EXTENDED); - eos_modem_set_mode(EOS_CELL_UART_MODE_ATCMD); - - ESP_LOGI(TAG, "INIT"); -} - -void eos_modem_flush(void){ - uart_wait_tx_done(UART_NUM_2, portMAX_DELAY); -} - -size_t eos_modem_write(void *data, size_t size) { - return uart_write_bytes(UART_NUM_2, (const char *)data, size); -} - -size_t eos_modem_read(void *data, size_t size, uint32_t timeout) { - return uart_read_bytes(UART_NUM_2, (uint8_t *)data, size, timeout / portTICK_RATE_MS); -} - -int eos_modem_readln(char *buf, size_t buf_size, uint32_t timeout) { - char *ln_end = NULL; - size_t buf_len = 0; - uint64_t t_start = esp_timer_get_time(); - - buf[0] = '\0'; - if (uart_buf_len) { - buf_len = MIN(buf_size -1, uart_buf_len); - memcpy(buf, uart_buf, buf_len); - buf[buf_len] = '\0'; - ln_end = strchr(buf, '\n'); - - uart_buf_len -= buf_len; - if (uart_buf_len) memmove(uart_buf, uart_buf + buf_len, uart_buf_len); - } - - while (ln_end == NULL) { - int len; - - if (buf_len == buf_size - 1) return EOS_ERR_FULL; - if (timeout && ((uint32_t)((esp_timer_get_time() - t_start) / 1000) > timeout)) return EOS_ERR_TIMEOUT; - - len = eos_modem_read(buf + buf_len, MIN(buf_size - buf_len - 1, sizeof(uart_buf) - uart_buf_len), 10); - if (len > 0) { - buf[buf_len + len] = '\0'; - ln_end = strchr(buf + buf_len, '\n'); - buf_len += len; - } - } - buf_len -= ln_end - buf + 1; - if (buf_len) { - if (uart_buf_len) memmove(uart_buf + buf_len, uart_buf, uart_buf_len); - memcpy(uart_buf, ln_end + 1, buf_len); - uart_buf_len += buf_len; - } - - if ((ln_end > buf) && (*(ln_end - 1) == '\r')) ln_end--; - *ln_end = '\0'; - - return EOS_OK; -} - -uint8_t eos_modem_get_mode(void) { - uint8_t ret; - - xSemaphoreTake(mutex, portMAX_DELAY); - ret = uart_mode; - xSemaphoreGive(mutex); - - return ret; -} - -int eos_modem_set_mode(uint8_t mode) { - int rv = EOS_OK; - - xSemaphoreTake(mutex, portMAX_DELAY); - if (mode != uart_mode) { - if (uart_mode == EOS_CELL_UART_MODE_PPP) rv = ppp_disconnect(); - if (!rv) { - if (mode == EOS_CELL_UART_MODE_PPP) { - rv = ppp_setup(); - } else { - modem_set_mode(mode); - } - if (!rv) uart_mode = mode; - } - } - xSemaphoreGive(mutex); - - return rv; -} - -int eos_modem_take(uint32_t timeout) { - int rv = EOS_OK; - - xSemaphoreTake(mutex, portMAX_DELAY); - if (uart_mode == EOS_CELL_UART_MODE_PPP) { - rv = ppp_pause(timeout, 0); - } else { - int r; - - modem_set_mode(EOS_CELL_UART_MODE_NONE); - r = xSemaphoreTake(uart_mutex, timeout ? timeout / portTICK_PERIOD_MS : portMAX_DELAY); - if (r == pdFALSE) { - modem_set_mode(uart_mode); - rv = EOS_ERR_TIMEOUT; - } - } - - if (rv) xSemaphoreGive(mutex); - - return rv; -} - -void eos_modem_give(void) { - if (uart_mode == EOS_CELL_UART_MODE_PPP) { - int rv = ppp_resume(); - if (rv) ESP_LOGW(TAG, "PPP resume failed"); - } else { - modem_set_mode(uart_mode); - xSemaphoreGive(uart_mutex); - } - xSemaphoreGive(mutex); -} - -void eos_modem_sleep(uint8_t mode) { - int r; - - xSemaphoreTake(mutex, portMAX_DELAY); - modem_set_mode(EOS_CELL_UART_MODE_NONE); - r = xSemaphoreTake(uart_mutex, 1000 / portTICK_PERIOD_MS); - if (r == pdFALSE) { - ESP_LOGE(TAG, "Obtaining mutex before sleep failed"); - } - gpio_set_level(UART_GPIO_DTR, 1); - if (mode == EOS_PWR_SMODE_DEEP) { - gpio_hold_en(UART_GPIO_DTR); - } -} - -void eos_modem_wake(uint8_t source, uint8_t mode) { - if (source == EOS_PWR_WAKE_UART) { - modem_event_t evt; - - evt.type = MODEM_ETYPE_RI; - xQueueSend(modem_queue, &evt, portMAX_DELAY); - } - - if (mode != EOS_PWR_SMODE_DEEP) { - gpio_set_intr_type(UART_GPIO_RI, GPIO_INTR_NEGEDGE); - gpio_isr_handler_add(UART_GPIO_RI, uart_ri_isr_handler, NULL); - gpio_set_level(UART_GPIO_DTR, 0); - - modem_set_mode(uart_mode); - xSemaphoreGive(uart_mutex); - xSemaphoreGive(mutex); - } else { - gpio_hold_dis(UART_GPIO_DTR); - } -} - -void eos_ppp_set_apn(char *apn) { - xSemaphoreTake(mutex, portMAX_DELAY); - strncpy(ppp_apn, apn, sizeof(ppp_apn) - 1); - xSemaphoreGive(mutex); -} - -void eos_ppp_set_auth(char *user, char *pass) { - xSemaphoreTake(mutex, portMAX_DELAY); - strncpy(ppp_user, user, sizeof(ppp_user) - 1); - strncpy(ppp_pass, pass, sizeof(ppp_pass) - 1); - xSemaphoreGive(mutex); -} - -int eos_ppp_connect(void) { - return eos_modem_set_mode(EOS_CELL_UART_MODE_PPP); -} - -int eos_ppp_disconnect(void) { - int rv = eos_modem_set_mode(EOS_CELL_UART_MODE_ATCMD); - - xSemaphoreTake(mutex, portMAX_DELAY); - memset(ppp_apn, 0, sizeof(ppp_apn)); - memset(ppp_user, 0, sizeof(ppp_user)); - memset(ppp_pass, 0, sizeof(ppp_pass)); - xSemaphoreGive(mutex); - - return rv; -}
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