From 82fac14b87e1f6cc869418f5b5a4ddc7ce8a1fd0 Mon Sep 17 00:00:00 2001
From: dernasherbrezon <dernasherbrezon@gmail.com>
Date: Fri, 5 Jul 2024 21:35:06 +0100
Subject: [PATCH] sync raspberrypi example with esp

---
 examples/receive_fsk_raspberrypi/main.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/examples/receive_fsk_raspberrypi/main.c b/examples/receive_fsk_raspberrypi/main.c
index cf66ce5..d52d2aa 100644
--- a/examples/receive_fsk_raspberrypi/main.c
+++ b/examples/receive_fsk_raspberrypi/main.c
@@ -15,8 +15,11 @@
 // Correspond to SPI0 with chip select pin CE0 (GPIO8) on RaspberryPI
 #define SPI_DEVICE "/dev/spidev0.0"
 #define GPIO_DEVICE "/dev/gpiochip0"
-// GPIO 27
+#define GPIO_DIO1_PIN 13
+#define GPIO_DIO2_PIN 19
+#define GPIO_DIO3_PIN 26
 #define GPIO_DIO0_PIN 27
+#define GPIO_RESET_PIN 6
 #define GPIO_POLL_TIMEOUT -1
 
 #define LINUX_ERROR_CHECK(x)                                                       \
@@ -91,7 +94,7 @@ int reset_sx127x() {
         return EXIT_FAILURE;
     }
     struct gpiohandle_request rq;
-    rq.lineoffsets[0] = 6;
+    rq.lineoffsets[0] = GPIO_RESET_PIN;
     rq.lines = 1;
     rq.flags = GPIOHANDLE_REQUEST_OUTPUT;
     strcpy(rq.consumer_label, "sx127x_reset");
@@ -117,7 +120,7 @@ int setup_and_wait_for_interrupt(sx127x *device) {
         perror("unable to open device");
         return EXIT_FAILURE;
     }
-    uint8_t gpios[] = {27, 13, 19, 26};
+    uint8_t gpios[] = {GPIO_DIO0_PIN, GPIO_DIO1_PIN, GPIO_DIO2_PIN, GPIO_DIO3_PIN};
     int gpios_length = sizeof(gpios);
     struct pollfd pfd[4];
     for (int i = 0; i < gpios_length; i++) {
@@ -180,14 +183,12 @@ int main() {
     sx127x *device = NULL;
     LINUX_ERROR_CHECK(sx127x_create(&spi_device_fd, &device));
     LINUX_ERROR_CHECK(sx127x_set_opmod(SX127x_MODE_SLEEP, SX127x_MODULATION_FSK, device));
-    LINUX_ERROR_CHECK(sx127x_set_opmod(SX127x_MODE_STANDBY, SX127x_MODULATION_FSK, device));
     LINUX_ERROR_CHECK(sx127x_set_frequency(437200000, device));
-    // perform calibration for the selected frequency
-    LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_calibrate(device));
+    LINUX_ERROR_CHECK(sx127x_set_opmod(SX127x_MODE_STANDBY, SX127x_MODULATION_FSK, device));
     LINUX_ERROR_CHECK(sx127x_fsk_ook_set_bitrate(4800.0, device));
     LINUX_ERROR_CHECK(sx127x_fsk_set_fdev(5000.0, device));
     LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_set_afc_auto(true, device));
-    LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_set_afc_bandwidth(10000.0, device));
+    LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_set_afc_bandwidth(20000.0, device));
     LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_set_bandwidth(5000.0, device));
     uint8_t syncWord[] = {0x12, 0xAD};
     LINUX_ERROR_CHECK(sx127x_fsk_ook_set_syncword(syncWord, 2, device));
@@ -196,7 +197,7 @@ int main() {
     LINUX_ERROR_CHECK(sx127x_fsk_ook_set_packet_format(SX127X_VARIABLE, 255, device));
     LINUX_ERROR_CHECK(sx127x_fsk_set_data_shaping(SX127X_BT_0_5, SX127X_PA_RAMP_10, device));
     LINUX_ERROR_CHECK(sx127x_fsk_ook_set_crc(SX127X_CRC_CCITT, device));
-    LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_set_trigger(SX127X_RX_TRIGGER_PREAMBLE, device));
+    LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_set_trigger(SX127X_RX_TRIGGER_RSSI_PREAMBLE, device));
     LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_set_rssi_config(SX127X_8, 0, device));
     LINUX_ERROR_CHECK(sx127x_fsk_ook_rx_set_preamble_detector(true, 2, 0x0A, device));