fix sx127x types

components/sx127x_driver/sx127x_internal.h

@@ -70,7 +70,7 @@ typedef enum sx127x_task_state {
 } sx127x_task_state_t;
 
 typedef struct sx127x_packet {
-  char * data;
+  uint8_t * data;
   size_t data_len;
 } sx127x_packet_t;
 

components/sx127x_driver/sx127x_registers.c

@@ -252,7 +252,7 @@ esp_err_t sx127x_read_lna_gain(sx127x_t *hndl, uint8_t *lna_gain) {
   return ESP_OK;
 }
 
-esp_err_t sx127x_write_fifo(sx127x_t *hndl, const char *data, size_t data_len) {
+esp_err_t sx127x_write_fifo(sx127x_t *hndl, const uint8_t *data, size_t data_len) {
   spi_transaction_t trans;
   memset(&trans, 0, sizeof(trans));
   trans.flags     = 0;
@@ -274,7 +274,7 @@ esp_err_t sx127x_write_fifo(sx127x_t *hndl, const char *data, size_t data_len) {
   return ESP_OK;
 }
 
-esp_err_t sx127x_read_fifo(sx127x_t *hndl, char *data_out, size_t data_len) {
+esp_err_t sx127x_read_fifo(sx127x_t *hndl, uint8_t *data_out, size_t data_len) {
   spi_transaction_t trans;
   memset(&trans, 0, sizeof(trans));
   trans.flags     = 0;

components/sx127x_driver/sx127x_registers.h

@@ -99,9 +99,9 @@ esp_err_t sx127x_read_pkt_snr(sx127x_hndl hdnl, int8_t *snr);
 esp_err_t sx127x_read_rssi(sx127x_hndl hdnl, int32_t *rssi);
 esp_err_t sx127x_read_lna_gain(sx127x_hndl hdnl, uint8_t *lna_gain);
 
-esp_err_t sx127x_write_fifo(sx127x_hndl hdnl, const char *data,
+esp_err_t sx127x_write_fifo(sx127x_hndl hdnl, const uint8_t *data,
                             size_t data_len);
-esp_err_t sx127x_read_fifo(sx127x_hndl hdnl, char *data_out, size_t data_len);
+esp_err_t sx127x_read_fifo(sx127x_hndl hdnl, uint8_t *data_out, size_t data_len);
 
 #ifdef __cplusplus
 }