Examples: add blinky

examples/blinky/Makefile

@@ -6,9 +6,12 @@ LDFLAGS = -Teagle.app.v6.ld
 blinky-0x00000.bin: blinky
 	esptool.py elf2image $^
 
-blinky: blinky.o blinky_main.o
+blinky: blinky.o
 
 blinky.o: blinky.c
 
 flash: blinky-0x00000.bin
 	esptool.py write_flash 0 blinky-0x00000.bin 0x40000 blinky-0x40000.bin
+
+clean:
+	rm -f blinky blinky.o blinky-0x00000.bin blinky-0x400000.bin

examples/blinky/blinky.c

@@ -0,0 +1,36 @@
+#include "ets_sys.h"
+#include "osapi.h"
+#include "gpio.h"
+#include "os_type.h"
+
+static const int pin = 1;
+static volatile os_timer_t some_timer;
+
+void some_timerfunc(void *arg)
+{
+  //Do blinky stuff
+  if (GPIO_REG_READ(GPIO_OUT_ADDRESS) & (1 << pin))
+  {
+    // set gpio low
+    gpio_output_set(0, (1 << pin), 0, 0);
+  }
+  else
+  {
+    // set gpio high
+    gpio_output_set((1 << pin), 0, 0, 0);
+  }
+}
+
+void ICACHE_FLASH_ATTR user_init()
+{
+  // init gpio sussytem
+  gpio_init();
+
+  // configure UART TXD to be GPIO1, set as output
+  PIN_FUNC_SELECT(PERIPHS_IO_MUX_U0TXD_U, FUNC_GPIO1); 
+  gpio_output_set(0, 0, (1 << pin), 0);
+
+  // setup timer (500ms, repeating)
+  os_timer_setfn(&some_timer, (os_timer_func_t *)some_timerfunc, NULL);
+  os_timer_arm(&some_timer, 500, 1);
+}