Add support for open drain leds

Keyur Hariya · adbridge · commit bd9eff93f87b · 2018-05-04T12:22:29.000+01:00
diff --git a/targets/TARGET_Maxim/TARGET_MAX32625/gpio_api.c b/targets/TARGET_Maxim/TARGET_MAX32625/gpio_api.c
@@ -67,6 +67,13 @@ void gpio_init(gpio_t *obj, PinName name)
 
 void gpio_mode(gpio_t *obj, PinMode mode)
 {
+#ifdef OPEN_DRAIN_LEDS
+    if ((obj->name == LED1) || (obj->name == LED2) ||
+        (obj->name == LED3) || (obj->name == LED4)) {
+        mode = OpenDrain;
+    }
+#endif
+
     obj->mode = mode;
     pin_mode(obj->name, mode);
 }
diff --git a/targets/targets.json b/targets/targets.json
@@ -2791,7 +2791,7 @@
     "MAX32625MBED": {
         "inherits": ["Target"],
         "core": "Cortex-M4F",
-        "macros": ["__SYSTEM_HFX=96000000","TARGET=MAX32625","TARGET_REV=0x4132"],
+        "macros": ["__SYSTEM_HFX=96000000","TARGET=MAX32625","TARGET_REV=0x4132", "OPEN_DRAIN_LEDS"],
         "extra_labels": ["Maxim", "MAX32625"],
         "supported_toolchains": ["GCC_ARM", "IAR", "ARM"],
         "device_has": ["ANALOGIN", "I2C", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_FC", "SLEEP", "SPI", "STDIO_MESSAGES"],

Original file line number	Diff line number	Diff line change
`@@ -67,6 +67,13 @@ void gpio_init(gpio_t *obj, PinName name)`
`67`	`67`
`68`	`68`	`void gpio_mode(gpio_t *obj, PinMode mode)`
`69`	`69`	`{`
	`70`	`+#ifdef OPEN_DRAIN_LEDS`
	`71`	`+ if ((obj->name == LED1) \|\| (obj->name == LED2) \|\|`
	`72`	`+ (obj->name == LED3) \|\| (obj->name == LED4)) {`
	`73`	`+ mode = OpenDrain;`
	`74`	`+ }`
	`75`	`+#endif`
	`76`	`+`
`70`	`77`	`obj->mode = mode;`
`71`	`78`	`pin_mode(obj->name, mode);`
`72`	`79`	`}`