code -> fw

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;
-}
\ No newline at end of file