From 6268f395eb5756a949a583a5b6fdbaeba70dad56 Mon Sep 17 00:00:00 2001
From: hathach <thach@tinyusb.org>
Date: Mon, 2 Sep 2019 14:58:46 +0700
Subject: [PATCH] add button for stm32f407 and stm32f411 board

---
 hw/bsp/stm32f407disco/stm32f407disco.c | 53 +++++++++++++----------
 hw/bsp/stm32f411disco/stm32f411disco.c | 58 ++++++++++++++------------
 2 files changed, 64 insertions(+), 47 deletions(-)

diff --git a/hw/bsp/stm32f407disco/stm32f407disco.c b/hw/bsp/stm32f407disco/stm32f407disco.c
index 6936f2b12..2eb5148d2 100644
--- a/hw/bsp/stm32f407disco/stm32f407disco.c
+++ b/hw/bsp/stm32f407disco/stm32f407disco.c
@@ -29,8 +29,13 @@
 #include "stm32f4xx.h"
 #include "stm32f4xx_hal_conf.h"
 
-#define LED_PORT  GPIOD
-#define LED_PIN   GPIO_PIN_14
+#define LED_PORT              GPIOD
+#define LED_PIN               GPIO_PIN_14
+#define LED_STATE_ON          1
+
+#define BUTTON_PORT           GPIOA
+#define BUTTON_PIN            GPIO_PIN_0
+#define BUTTON_STATE_ACTIVE   1
 
 /**
   * @brief  System Clock Configuration
@@ -101,11 +106,32 @@ void board_init(void)
   // Notify runtime of frequency change.
   SystemCoreClockUpdate();
 
-  // Enable USB OTG clock
-  __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
+  __HAL_RCC_GPIOA_CLK_ENABLE(); // button, USB D+/D-
+  __HAL_RCC_GPIOD_CLK_ENABLE(); // LED
 
   GPIO_InitTypeDef  GPIO_InitStruct;
 
+  // LED
+  __HAL_RCC_GPIOD_CLK_ENABLE();
+
+  GPIO_InitStruct.Pin = LED_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+  GPIO_InitStruct.Pull = GPIO_PULLUP;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+  HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
+
+  board_led_write(false);
+
+  // Button
+  GPIO_InitStruct.Pin = BUTTON_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+  HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
+
+  // Enable USB OTG clock
+  __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
+
   // USB Pin Init
   // PA9- VUSB, PA10- ID, PA11- DM, PA12- DP
   __HAL_RCC_GPIOA_CLK_ENABLE();
@@ -131,19 +157,6 @@ void board_init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
   GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
-
-  // Init the LED
-  __HAL_RCC_GPIOD_CLK_ENABLE();
-
-  GPIO_InitStruct.Pin = LED_PIN;
-  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-  GPIO_InitStruct.Pull = GPIO_PULLUP;
-  GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
-  HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
-
-  board_led_write(false);
-
-  // TODO Button
 }
 
 //--------------------------------------------------------------------+
@@ -152,16 +165,14 @@ void board_init(void)
 
 void board_led_write(bool state)
 {
-  HAL_GPIO_WritePin(LED_PORT, LED_PIN, state);
+  HAL_GPIO_WritePin(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
 }
 
 uint32_t board_button_read(void)
 {
-  // TODO implement
-  return 0;
+  return BUTTON_STATE_ACTIVE == HAL_GPIO_ReadPin(BUTTON_PORT, BUTTON_PIN);
 }
 
-
 #if CFG_TUSB_OS  == OPT_OS_NONE
 volatile uint32_t system_ticks = 0;
 void SysTick_Handler (void)
diff --git a/hw/bsp/stm32f411disco/stm32f411disco.c b/hw/bsp/stm32f411disco/stm32f411disco.c
index cb5983760..541416c22 100644
--- a/hw/bsp/stm32f411disco/stm32f411disco.c
+++ b/hw/bsp/stm32f411disco/stm32f411disco.c
@@ -29,8 +29,13 @@
 #include "stm32f4xx.h"
 #include "stm32f4xx_hal_conf.h"
 
-#define LED_PORT  GPIOD
-#define LED_PIN   GPIO_PIN_13
+#define LED_PORT              GPIOD
+#define LED_PIN               GPIO_PIN_13
+#define LED_STATE_ON          1
+
+#define BUTTON_PORT           GPIOA
+#define BUTTON_PIN            GPIO_PIN_0
+#define BUTTON_STATE_ACTIVE   1
 
 /**
   * @brief  System Clock Configuration
@@ -101,16 +106,32 @@ void board_init(void)
   // Notify runtime of frequency change.
   SystemCoreClockUpdate();
 
-  // Enable USB OTG clock
-  __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
-
-
-  /* Configure USB FS GPIOs */
-  __HAL_RCC_GPIOA_CLK_ENABLE();
+  __HAL_RCC_GPIOA_CLK_ENABLE(); // button, USB D+/D-
+  __HAL_RCC_GPIOD_CLK_ENABLE(); // LED
 
   GPIO_InitTypeDef  GPIO_InitStruct;
 
-  /* Configure DM DP Pins */
+  // LED
+  GPIO_InitStruct.Pin = LED_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+  GPIO_InitStruct.Pull = GPIO_PULLUP;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+  HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
+
+  board_led_write(false);
+
+  // Button
+  GPIO_InitStruct.Pin = BUTTON_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+  HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
+
+  // Enable USB OTG clock
+  __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
+
+  /* Configure USB FS GPIOs */
+  /* Configure USB D+ D- Pins */
   GPIO_InitStruct.Pin = GPIO_PIN_11 | GPIO_PIN_12;
   GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
   GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
@@ -131,19 +152,6 @@ void board_init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
   GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
-
-  // Init the LED
-  __HAL_RCC_GPIOD_CLK_ENABLE();
-
-  GPIO_InitStruct.Pin = LED_PIN;
-  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-  GPIO_InitStruct.Pull = GPIO_PULLUP;
-  GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
-  HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
-
-  board_led_write(false);
-
-  // TODO Button
 }
 
 //--------------------------------------------------------------------+
@@ -152,16 +160,14 @@ void board_init(void)
 
 void board_led_write(bool state)
 {
-  HAL_GPIO_WritePin(LED_PORT, LED_PIN, state);
+  HAL_GPIO_WritePin(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
 }
 
 uint32_t board_button_read(void)
 {
-  // TODO implement
-  return 0;
+  return BUTTON_STATE_ACTIVE == HAL_GPIO_ReadPin(BUTTON_PORT, BUTTON_PIN);
 }
 
-
 #if CFG_TUSB_OS  == OPT_OS_NONE
 volatile uint32_t system_ticks = 0;
 void SysTick_Handler (void)