renamed idle to standby to better reflect datasheet

lowered some log levels

include/esp32-lora.h

@@ -77,7 +77,7 @@
 
 #define EV_DIO0 (1 << 0)
 
-#define ERR_LOR_ID_MISMATCH (00)
+#define ERR_LOR_VERSION_MISMATCH (01)
 
 enum freq {
   F433, F866, F915
@@ -138,6 +138,7 @@ uint8_t lora32_data_available(lora32_cfg_t *lora);
 double lora32_calc_datarate(lora32_cfg_t *lora);
 void lora32_dump_regs(lora32_cfg_t *lora);
 void lora32_enable_continuous_rx(lora32_cfg_t *lora);
+void lora32_enable_single_rx(lora32_cfg_t *lora);
 void lora32_enable_cad(lora32_cfg_t *lora);
 void lora32_toggle_reset(lora32_cfg_t *lora);
 void lora32_send(lora32_cfg_t *config, uint8_t *data, uint8_t len);
@@ -145,5 +146,7 @@ void lora32_set_bandwidth(lora32_cfg_t *lora, uint8_t bw);
 void lora32_set_coding_rate(lora32_cfg_t *lora, uint8_t cr);
 void lora32_set_spreadfactor(lora32_cfg_t *lora, uint8_t factor);
 void lora32_read_data(lora32_cfg_t *lora, uint8_t *data);
+void lora32_sleep(lora32_cfg_t *lora);
+void lora32_standby(lora32_cfg_t *lora);
 
 #endif // _LORA32_H__

main/esp32-lora.c

@@ -31,7 +31,7 @@ static TaskHandle_t dio_task_handle;
 static SemaphoreHandle_t spi_semaphore;
 
 uint8_t lora32_read_reg(lora32_cfg_t *lora, uint8_t address) {
-  //xSemaphoreTake(spi_semaphore, portMAX_DELAY);
+  xSemaphoreTake(spi_semaphore, portMAX_DELAY);
 
 	spi_transaction_t t;
   memset(&t, 0, sizeof(spi_transaction_t));
@@ -45,13 +45,13 @@ uint8_t lora32_read_reg(lora32_cfg_t *lora, uint8_t address) {
 
   ESP_LOGV(TAG, "<%2X<%2X", address, t.rx_data[1]);
 
-  //xSemaphoreGive(spi_semaphore);
+  xSemaphoreGive(spi_semaphore);
 
 	return t.rx_data[1];
 }
 
 void lora32_write_reg(lora32_cfg_t *lora, uint8_t address, uint8_t value) {
-  //xSemaphoreTake(spi_semaphore, portMAX_DELAY);
+  xSemaphoreTake(spi_semaphore, portMAX_DELAY);
 
   spi_device_handle_t spi = lora->spi;
 
@@ -67,7 +67,7 @@ void lora32_write_reg(lora32_cfg_t *lora, uint8_t address, uint8_t value) {
 
   ESP_ERROR_CHECK(spi_device_transmit(spi, &t));
 
-  //xSemaphoreGive(spi_semaphore);
+  xSemaphoreGive(spi_semaphore);
 };
 
 double lora32_calc_datarate(lora32_cfg_t *lora) {
@@ -91,20 +91,20 @@ void lora23_set_implicit_header(lora32_cfg_t *lora) {
   lora32_write_reg(lora, REG_MODEM_CONFIG_1, lora32_read_reg(lora, REG_MODEM_CONFIG_1) | 0x01);
 }
 
-void lora32_idle(lora32_cfg_t *lora) {
-  ESP_LOGD(TAG, "MODE_STANDBY");
+void lora32_standby(lora32_cfg_t *lora) {
+  ESP_LOGV(TAG, "MODE_STANDBY");
 
   lora32_write_reg(lora, REG_OP_MODE, MODE_LONG_RANGE_MODE | MODE_STANDBY);
 }
 
 void lora32_sleep(lora32_cfg_t *lora) {
-  ESP_LOGD(TAG, "MODE_SLEEP");
+  ESP_LOGV(TAG, "MODE_SLEEP");
 
   lora32_write_reg(lora, REG_OP_MODE, MODE_LONG_RANGE_MODE | MODE_SLEEP);
 }
 
 void lora32_enable_tx(lora32_cfg_t *lora) {
-  lora32_idle(lora);
+  lora32_standby(lora);
 
   if(lora->implicitHeader)
     lora23_set_implicit_header(lora);
@@ -117,7 +117,7 @@ void lora32_enable_tx(lora32_cfg_t *lora) {
 }
 
 void lora32_send(lora32_cfg_t *lora, uint8_t *data, uint8_t len) {
-  spi_device_acquire_bus(lora->spi, portMAX_DELAY);
+  ESP_ERROR_CHECK(spi_device_acquire_bus(lora->spi, portMAX_DELAY));
 
   lora32_write_reg(lora, REG_DIO_MAPPING_1, DIO0_MODE_TXDONE);
 
@@ -246,6 +246,18 @@ void lora32_set_spreadfactor(lora32_cfg_t *lora, uint8_t factor) {
   lora32_write_reg(lora, REG_MODEM_CONFIG_2, (lora32_read_reg(lora, REG_MODEM_CONFIG_2) & 0x0F) | ((factor << 4) & 0xF0));
 }
 
+void lora32_enable_single_rx(lora32_cfg_t *lora) {
+  ESP_LOGD(TAG, "MODE_RX_SINGLE");
+
+  if(lora->receive != NULL) {
+    lora32_write_reg(lora, REG_DIO_MAPPING_1, DIO0_MODE_RXDONE);
+  }
+
+  lora32_standby(lora);
+
+  lora32_write_reg(lora, REG_OP_MODE, MODE_LONG_RANGE_MODE | MODE_RX_SINGLE);
+}
+
 void lora32_enable_continuous_rx(lora32_cfg_t *lora) {
   ESP_LOGD(TAG, "MODE_RX_CONTINUOUS");
 
@@ -253,6 +265,8 @@ void lora32_enable_continuous_rx(lora32_cfg_t *lora) {
     lora32_write_reg(lora, REG_DIO_MAPPING_1, DIO0_MODE_RXDONE);
   }
 
+  lora32_standby(lora);
+
   lora32_write_reg(lora, REG_OP_MODE, MODE_LONG_RANGE_MODE | MODE_RX_CONTINUOUS);
 }
 
@@ -361,6 +375,8 @@ static void IRAM_ATTR lora32_dio_task(void *arg) {
     ESP_LOGD(TAG, "clearing irqs");
     lora32_write_reg(lora, REG_IRQ_FLAGS, irqs);
 
+    spi_device_release_bus(lora->spi);
+
     // TODO handle header validation
     if((irqs & IRQ_RX_DONE) == IRQ_RX_DONE) {
       lora32_handle_receive(lora);
@@ -385,8 +401,6 @@ static void IRAM_ATTR lora32_dio_task(void *arg) {
       // these *should* fire at the same time, defaults to false
       if(lora->cad_done != NULL) lora->cad_done(lora, cad_detected);
     }
-
-    spi_device_release_bus(lora->spi);
   }
 }
 
@@ -463,7 +477,13 @@ uint8_t lora32_init(lora32_cfg_t *lora) {
 
   uint8_t version = lora32_read_reg(lora, REG_VERSION);
   ESP_LOGD(TAG, "lora32_get_id() == 0x%2X", version);
-  assert(version == 0x12);
+
+  // if ID does not match, something is likely wrong on the SPI bus
+  if(version != 0x12) {
+    ESP_LOGD(TAG, "REG_VERSION returned incorrectly. Expected 0x12 got 0x%02X", version);
+
+    return ERR_LOR_VERSION_MISMATCH;
+  }
 
   // TODO: confirm this is happening. Before/after power measurements?
   lora32_sleep(lora);
@@ -488,8 +508,8 @@ uint8_t lora32_init(lora32_cfg_t *lora) {
   lora32_set_tx_power(lora, 17, PA_OUTPUT_PA_BOOST_PIN);
   ESP_LOGI(TAG, "lora32_set_tx_power");
 
-  lora32_idle(lora);
-  ESP_LOGI(TAG, "lora32_idle");
+  lora32_standby(lora);
+  ESP_LOGI(TAG, "lora32_standby");
 
   // TODO setup shouldn't be based on just receive callback
   if(lora->receive != NULL) {