furi playground

core/app.cpp

@@ -0,0 +1,24 @@
+#include "flipper.h"
+#include <stdio.h>
+
+extern "C" {
+    FILE* get_debug();
+}
+
+extern "C" void app() {
+    FILE* debug_uart = get_debug();
+
+    fprintf(debug_uart, "hello Flipper!\n");
+
+    GpioPin red_led = {LED_RED_GPIO_Port, LED_RED_Pin};
+
+    app_gpio_init(red_led, GpioModeOutput);
+
+    
+    while(1) {
+        delay(100);
+        app_gpio_write(red_led, true);
+        delay(100);
+        app_gpio_write(red_led, false);
+    }
+}

core/flipper.h

@@ -0,0 +1,20 @@
+extern "C" {
+    #include "main.h"
+    #include "flipper_hal.h"
+    #include "cmsis_os.h"
+}
+
+// Arduino defines
+
+#define pinMode app_gpio_init
+#define digitalWrite app_gpio_write
+#define digitalRead app_gpio_read
+#define EEMEM
+#define delayMicroseconds delay_us
+#define delay osDelay
+#define byte uint8_t
+
+#define OUTPUT GpioModeOutput
+#define INPUT GpioModeInput
+#define LOW false
+#define HIGH true

core/write.c

@@ -0,0 +1,31 @@
+#define _GNU_SOURCE
+#include "main.h"
+#include <stdio.h>
+
+extern UART_HandleTypeDef DEBUG_UART;
+
+ssize_t uart_write(void* cookie, const char * buffer, size_t size) {
+    if (buffer == 0) {
+        /*
+         * This means that we should flush internal buffers.  Since we
+         * don't we just return.  (Remember, "handle" == -1 means that all
+         * handles should be flushed.)
+         */
+        return 0;
+    }
+    
+    return (ssize_t)HAL_UART_Transmit(&DEBUG_UART, (uint8_t*)buffer, (uint16_t)size, HAL_MAX_DELAY);
+}
+
+FILE* get_debug() {
+    FILE* fp = fopencookie(NULL,"w+", (cookie_io_functions_t){
+        .read  = NULL,
+        .write = uart_write,
+        .seek  = NULL,
+        .close = NULL
+    });
+
+    setvbuf(fp, NULL, _IONBF, 0);
+
+    return fp;
+}