From a4797327cd4ea9fd53e00bf2ecfc82c30e413cec Mon Sep 17 00:00:00 2001
From: Hierophect <hierophect@gmail.com>
Date: Mon, 18 Nov 2019 13:51:59 -0500
Subject: add microcontroller toggles for status LED

---
 .../feather_stm32f405_express/mpconfigboard.h      | 10 +++---
 ports/stm32f4/common-hal/microcontroller/Pin.c     | 38 +++++++++++++++-------
 2 files changed, 32 insertions(+), 16 deletions(-)

diff --git a/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h b/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
index e2295dc5e..dc88f695a 100644
--- a/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
+++ b/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
@@ -35,13 +35,13 @@
 #define AUTORESET_DELAY_MS 500
 #define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000)
 
-#define MICROPY_HW_NEOPIXEL &pin_PC00
+#define MICROPY_HW_NEOPIXEL (&pin_PC00)
 
 // On-board flash
-#define SPI_FLASH_MOSI_PIN          &pin_PB05
-#define SPI_FLASH_MISO_PIN          &pin_PB04
-#define SPI_FLASH_SCK_PIN           &pin_PB03
-#define SPI_FLASH_CS_PIN            &pin_PA15
+#define SPI_FLASH_MOSI_PIN          (&pin_PB05)
+#define SPI_FLASH_MISO_PIN          (&pin_PB04)
+#define SPI_FLASH_SCK_PIN           (&pin_PB03)
+#define SPI_FLASH_CS_PIN            (&pin_PA15)
 
 #define DEFAULT_I2C_BUS_SCL (&pin_PB06)
 #define DEFAULT_I2C_BUS_SDA (&pin_PB07)
diff --git a/ports/stm32f4/common-hal/microcontroller/Pin.c b/ports/stm32f4/common-hal/microcontroller/Pin.c
index 9380bf139..21290e03c 100644
--- a/ports/stm32f4/common-hal/microcontroller/Pin.c
+++ b/ports/stm32f4/common-hal/microcontroller/Pin.c
@@ -26,6 +26,8 @@
  */
 
 #include "shared-bindings/microcontroller/Pin.h"
+#include "shared-bindings/digitalio/DigitalInOut.h"
+#include "supervisor/shared/rgb_led_status.h"
 
 #include "py/mphal.h"
 #include "stm32f4/pins.h"
@@ -34,13 +36,6 @@
 #ifdef MICROPY_HW_NEOPIXEL
 bool neopixel_in_use;
 #endif
-#ifdef MICROPY_HW_APA102_MOSI
-bool apa102_sck_in_use;
-bool apa102_mosi_in_use;
-#endif
-#ifdef SPEAKER_ENABLE_PIN
-bool speaker_enable_in_use;
-#endif
 
 #if MCU_PACKAGE == 144
     #define GPIO_PORT_COUNT 7
@@ -64,6 +59,10 @@ void reset_all_pins(void) {
     for (uint8_t i = 0; i < GPIO_PORT_COUNT; i++) {
         HAL_GPIO_DeInit(ports[i], ~never_reset_pins[i]);
     }
+
+    #ifdef MICROPY_HW_NEOPIXEL
+    neopixel_in_use = false;
+    #endif
 }
 
 // Mark pin as free and return it to a quiescent state.
@@ -71,13 +70,18 @@ void reset_pin_number(uint8_t pin_port, uint8_t pin_number) {
     if (pin_port == 0x0F) {
         return;
     }
-
-    // Clear claimed bit.
+    // Clear claimed bit & reset
     claimed_pins[pin_port] &= ~(1<<pin_number);
-    // Reset the pin
     HAL_GPIO_DeInit(ports[pin_port], 1<<pin_number);
-}
 
+    #ifdef MICROPY_HW_NEOPIXEL
+    if (pin_port == MICROPY_HW_NEOPIXEL->port && pin_number == MICROPY_HW_NEOPIXEL->number) {
+        neopixel_in_use = false;
+        rgb_led_status_init();
+        return;
+    }
+    #endif
+}
 
 void never_reset_pin_number(uint8_t pin_port, uint8_t pin_number) {
     never_reset_pins[pin_port] |= 1<<pin_number;
@@ -94,6 +98,12 @@ void common_hal_reset_pin(const mcu_pin_obj_t* pin) {
 void claim_pin(const mcu_pin_obj_t* pin) {
     // Set bit in claimed_pins bitmask.
     claimed_pins[pin->port] |= 1<<pin->number;
+
+    #ifdef MICROPY_HW_NEOPIXEL
+    if (pin == MICROPY_HW_NEOPIXEL) {
+        neopixel_in_use = true;
+    }
+    #endif
 }
 
 bool pin_number_is_free(uint8_t pin_port, uint8_t pin_number) {
@@ -101,6 +111,12 @@ bool pin_number_is_free(uint8_t pin_port, uint8_t pin_number) {
 }
 
 bool common_hal_mcu_pin_is_free(const mcu_pin_obj_t *pin) {
+    #ifdef MICROPY_HW_NEOPIXEL
+    if (pin == MICROPY_HW_NEOPIXEL) {
+        return !neopixel_in_use;
+    }
+    #endif
+
     return pin_number_is_free(pin->port, pin->number);
 }
 
-- 
cgit v1.2.3