WIP Kconfig system, user butter handling, gps peripheral support

include/user_button.h

@@ -0,0 +1,6 @@
+#ifndef __USER_BUTTON_H
+#define __USER_BUTTON_H
+
+void user_button_init();
+
+#endif

main/CMakeLists.txt

@@ -3,6 +3,7 @@ set(COMPONENT_SRCS "\
   lorcomm.c\
   ble.c\
   console.c\
+  user_button.c\
   cmd_bw.c\
   cmd_cr.c\
   cmd_sf.c\

main/Kconfig.projbuild

@@ -0,0 +1,44 @@
+menu "LoRComm Config"
+  menuconfig LORCOMM_GPS_ENABLED
+    bool "Enable GPS receiver"
+    help
+      Enables attached GPS receiver
+
+    if LORCOMM_GPS_ENABLED
+      config LORCOMM_GPS_RX
+        int "GPS RX Pin"
+        default 13
+        help
+          GPIO to receive data from GPS receiver
+    endif
+
+  choice LORCOMM_BUTTON_ACTION
+    bool "User Button Action"
+    default LORCOMM_BUTTON_ACTION_HELO
+        help
+          Selection action to be performed when the user button
+          is pressed.
+
+        config LORCOMM_BUTTON_ACTION_NONE
+            bool "Do nothing"
+            help
+              Do nothing
+
+        config LORCOMM_BUTTON_ACTION_HELO
+            bool "Send HELO"
+            help
+              Send out a HELO packet and listen for response
+
+        if LORCOMM_GPS_ENABLED
+          config LORCOMM_BUTTON_ACTION_GPS
+              bool "Send GPS"
+              help
+                  Sends GPS coordinates and listens for ACK.
+        endif
+    endchoice
+
+    config LORCOMM_BUTTON_ACTION_ENABLED
+      bool
+        default n if LORCOMM_BUTTON_ACTION_NONE
+        default y
+endmenu

main/main.c

@@ -14,6 +14,7 @@
 #include "esp32-lora.h"
 #include "console.h"
 #include "ble.h"
+#include "user_button.h"
 
 static const char *TAG = "loracom-main";
 
@@ -88,6 +89,10 @@ void app_main(void) {
 
   lora32_enable_continuous_rx(&lora);
 
+#ifdef CONFIG_LORCOMM_BUTTON_ACTION_ENABLED
+  user_button_init();
+#endif
+
   while(1) {
     vTaskDelay(1000 / portTICK_PERIOD_MS);
   }

main/user_button.c

@@ -0,0 +1,39 @@
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/queue.h"
+#include "driver/gpio.h"
+
+static xQueueHandle gpio_evt_queue = NULL;
+
+static void IRAM_ATTR gpio_isr_handler(void* arg)
+{
+    uint32_t gpio_num = (uint32_t) arg;
+    xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
+}
+
+static void gpio_task_example(void* arg) {
+    uint32_t io_num;
+    for(;;) {
+        if(xQueueReceive(gpio_evt_queue, &io_num, portMAX_DELAY)) {
+            printf("GPIO[%d] intr, val: %d\n", io_num, gpio_get_level(io_num));
+        }
+    }
+}
+
+void user_button_init() {
+    gpio_config_t io_conf;
+
+    io_conf.intr_type = GPIO_PIN_INTR_NEGEDGE;
+    io_conf.mode = GPIO_MODE_INPUT;
+    io_conf.pin_bit_mask = (1L << 0);
+    io_conf.pull_down_en = 0;
+    io_conf.pull_up_en = 0;
+
+    gpio_config(&io_conf);
+
+    gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
+    xTaskCreate(gpio_task_example, "gpio_task_example", 2048, NULL, 10, NULL);
+
+    gpio_install_isr_service(0);
+    gpio_isr_handler_add(0, gpio_isr_handler, (void*) 0);
+}