Easier to change LEDs

- For building for boards with different LEDs and configurations
 - Define mode for LED
 - Use gpio_write function to leverage pin definitions

src/BlueSCSI.cpp

@@ -426,8 +426,8 @@ void setup()
 #endif
 
   // PIN initialization
-  gpio_mode(LED2, GPIO_OUTPUT_PP);
-  gpio_mode(LED, GPIO_OUTPUT_OD);
+  gpio_mode(LED, LED_MODE);
+  gpio_mode(LED2, LED2_MODE);
 
   // Image Set Select Init
   gpio_mode(IMAGE_SELECT1, GPIO_INPUT_PU);

src/BlueSCSI.h

@@ -99,8 +99,18 @@ enum SCSI_DEVICE_TYPE
 #define IO        PB7      // SCSI:I/O
 
 #define SD_CS     PA4      // SDCARD:CS
-#define LED       PC13     // LED
-#define LED2      PA0      // External LED
+
+// Built-in LED
+#define LED       PC13
+#define LED_MODE  GPIO_OUTPUT_OD
+
+// External LED
+#define LED2      PA0
+#define LED2_MODE GPIO_OUTPUT_PP
+
+// LED control
+#define LED_ON()       gpio_write(LED, (LED_MODE == GPIO_OUTPUT_PP) ? low : high); gpio_write(LED2, (LED_MODE == GPIO_OUTPUT_PP) ? low : high);
+#define LED_OFF()      gpio_write(LED, (LED_MODE == GPIO_OUTPUT_PP) ? high : low); gpio_write(LED2, (LED_MODE == GPIO_OUTPUT_PP) ? high : low);
 
 // Image Set Selector
 #ifdef XCVR
@@ -116,10 +126,6 @@ enum SCSI_DEVICE_TYPE
 #define PBREG GPIOB->regs
 #define PCREG GPIOC->regs
 
-// LED control
-#define LED_ON()  PCREG->BSRR = 0b00100000000000000000000000000000; PAREG->BSRR = 0b00000000000000000000000000000001;
-#define LED_OFF() PCREG->BSRR = 0b00000000000000000010000000000000; PAREG->BSRR = 0b00000000000000010000000000000000;
-
 // Virtual pin (Arduio compatibility is slow, so make it MCU-dependent)
 #define PA(BIT)       (BIT)
 #define PB(BIT)       (BIT+16)