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Diffstat (limited to 'code/esp32/components/eos/cell_modem.c')
-rw-r--r--code/esp32/components/eos/cell_modem.c169
1 files changed, 84 insertions, 85 deletions
diff --git a/code/esp32/components/eos/cell_modem.c b/code/esp32/components/eos/cell_modem.c
index 5315861..c6d718f 100644
--- a/code/esp32/components/eos/cell_modem.c
+++ b/code/esp32/components/eos/cell_modem.c
@@ -21,8 +21,7 @@
// XXX: PPP reconnect on failure
-#define UART_SIZE_BUF 1024
-#define UART_SIZE_URC_BUF 128
+#define UART_SIZE_IO_BUF 1024
#define UART_GPIO_TXD 16
#define UART_GPIO_RXD 17
@@ -32,18 +31,27 @@
#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 uart_buf[UART_SIZE_URC_BUF];
-static unsigned int uart_buf_len;
+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;
@@ -94,7 +102,7 @@ static void uart_data_read(uint8_t mode) {
int _rd;
buf = eos_net_alloc();
- buf[0] = EOS_CELL_MTYPE_DATA;
+ 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;
@@ -161,14 +169,14 @@ static int modem_atcmd_init(void) {
unsigned char *buf;
int echo_on = 0;
int tries = 3;
- int r;
+ int i, r;
int rv = EOS_OK;
rv = eos_modem_take(1000);
if (rv) return rv;
do {
- eos_modem_write("AT\r", 3);
+ at_cmd("AT\r");
r = at_expect("^AT", "^OK", 1000);
if (r >= 0) {
echo_on = r;
@@ -186,22 +194,22 @@ static int modem_atcmd_init(void) {
}
if (echo_on) {
- eos_modem_write("AT&F\r", 5);
+ at_cmd("AT&F\r");
r = at_expect("^AT&F", NULL, 1000);
r = at_expect("^OK", NULL, 1000);
} else {
- r = eos_modem_write("AT&F\r", 5);
+ at_cmd("AT&F\r");
r = at_expect("^OK", NULL, 1000);
}
- eos_modem_write("ATE0\r", 5);
+ at_cmd("ATE0\r");
r = at_expect("^ATE0", NULL, 1000);
r = at_expect("^OK", "^ERROR", 1000);
- eos_modem_write("AT+CFGRI=1\r", 11);
- r = at_expect("^OK", "^ERROR", 1000);
- eos_modem_write("AT+CSCLK=1\r", 11);
- 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;
@@ -213,36 +221,34 @@ static int modem_atcmd_init(void) {
}
static void modem_atcmd_read(size_t bsize) {
- char *ln_begin, *ln_end, *ln_next;
+ char *ln_end;
int rd = 0;
do {
- int _rd = eos_modem_read(uart_buf + uart_buf_len, MIN(bsize - rd, sizeof(uart_buf) - uart_buf_len - 1), 100);
- ln_next = uart_buf + uart_buf_len;
- ln_begin = uart_buf;
- uart_buf_len += _rd;
+ 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(ln_next, '\n'))) {
- ln_end--;
- if ((ln_end > ln_begin) && (*ln_end == '\r')) {
- int r;
-
- *ln_end = '\0';
- r = at_urc_process(ln_begin);
- if (!r) {
- ESP_LOGD(TAG, "unhandled URC: %s", ln_begin);
- }
- }
- ln_next = ln_end + 2;
- ln_begin = ln_next;
+ 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 (ln_begin != uart_buf) {
- uart_buf_len -= ln_begin - uart_buf;
- if (uart_buf_len) memmove(uart_buf, ln_begin, uart_buf_len);
- } else if (uart_buf_len == sizeof(uart_buf) - 1) {
- memcpy(uart_buf, uart_buf + sizeof(uart_buf) / 2, sizeof(uart_buf) / 2);
- uart_buf_len = sizeof(uart_buf) / 2;
+ 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);
}
@@ -407,7 +413,7 @@ static int ppp_pause(uint32_t timeout, uint8_t retries) {
vTaskDelay(1000 / portTICK_PERIOD_MS);
modem_set_mode(EOS_CELL_UART_MODE_NONE);
xSemaphoreTake(uart_mutex, portMAX_DELAY);
- eos_modem_write("+++", 3);
+ at_cmd("+++");
t_start = esp_timer_get_time();
do {
@@ -440,7 +446,7 @@ static int ppp_pause(uint32_t timeout, uint8_t retries) {
done = 1;
} else {
retries--;
- eos_modem_write("+++", 3);
+ at_cmd("+++");
t_start = esp_timer_get_time();
}
}
@@ -453,7 +459,7 @@ static int ppp_resume(void) {
int r;
int rv = EOS_OK;
- eos_modem_write("ATO\r", 4);
+ at_cmd("ATO\r");
r = at_expect("^CONNECT", "^(ERROR|NO CARRIER)", 1000);
if (r <= 0) rv = EOS_ERR;
@@ -478,7 +484,7 @@ static int ppp_setup(void) {
return EOS_ERR_TIMEOUT;
}
- eos_modem_write(cmd, cmd_len);
+ at_cmd(cmd);
r = at_expect("^OK", "^ERROR", 1000);
if (r <= 0) {
modem_set_mode(uart_mode);
@@ -486,7 +492,7 @@ static int ppp_setup(void) {
return EOS_ERR;
}
- eos_modem_write("AT+CGDATA=\"PPP\",1\r", 18);
+ 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);
@@ -514,7 +520,7 @@ static int ppp_disconnect(void) {
rv = ppp_pause(1000, 2);
if (rv) return rv;
- eos_modem_write("ATH\r", 4);
+ at_cmd("ATH\r");
at_expect("^OK", NULL, 1000);
xSemaphoreGive(uart_mutex);
@@ -536,7 +542,7 @@ void eos_modem_init(void) {
};
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_BUF, UART_SIZE_BUF, 10, &uart_queue, 0);
+ 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;
@@ -591,52 +597,45 @@ size_t eos_modem_read(void *data, size_t size, uint32_t timeout) {
}
int eos_modem_readln(char *buf, size_t buf_size, uint32_t timeout) {
- int done = 0;
- int len = 0;
- int rv = EOS_OK;
char *ln_end = NULL;
+ size_t buf_len = 0;
uint64_t t_start = esp_timer_get_time();
- uart_buf[uart_buf_len] = '\0';
- ln_end = strchr(uart_buf, '\n');
+ 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');
- do {
- if (ln_end == NULL) {
- len = eos_modem_read(uart_buf + uart_buf_len, sizeof(uart_buf) - uart_buf_len - 1, 10);
- if (len > 0) {
- uart_buf[uart_buf_len + len] = '\0';
- ln_end = strchr(uart_buf + uart_buf_len, '\n');
- uart_buf_len += len;
- }
- }
- if (ln_end) {
- ln_end--;
- if ((ln_end >= uart_buf) && (*ln_end == '\r')) {
- if (buf) {
- if (buf_size > ln_end - uart_buf) {
- memcpy(buf, uart_buf, ln_end - uart_buf);
- buf[ln_end - uart_buf] = '\0';
- } else {
- rv = EOS_ERR;
- }
- }
- done = 1;
- }
- ln_end += 2;
- uart_buf_len -= ln_end - uart_buf;
- if (uart_buf_len) memmove(uart_buf, ln_end, uart_buf_len);
- ln_end = NULL;
- } else if (uart_buf_len == sizeof(uart_buf) - 1) {
- 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)) {
- rv = EOS_ERR_TIMEOUT;
- done = 1;
+ 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;
}
- } while (!done);
+ }
+ 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;
+ }
- return rv;
+ if ((ln_end > buf) && (*(ln_end - 1) == '\r')) ln_end--;
+ *ln_end = '\0';
+
+ return EOS_OK;
}
uint8_t eos_modem_get_mode(void) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-20 09:01:17 +0000