Commit 50d5420d authored by mux's avatar mux
Browse files

Add Initial Support for STM32F4DISCOVERY Board

* Add a TARGET definition to Makefile (default PYBOARD).
* Add support for discovery LEDs in led module.
* Add support for discovery user switch in usersw
* Add EXTI interrupt handler for discovery user switch on (PA0).
* Parameterize led and usrsw modules pins and port.
* Issue #83
parent 12e26564
......@@ -5,12 +5,13 @@ CC3KSRC=cc3k
PYSRC=../py
BUILD=build
DFU=../tools/dfu.py
TARGET=PYBOARD
AS = arm-none-eabi-as
CC = arm-none-eabi-gcc
LD = arm-none-eabi-ld
CFLAGS_CORTEX_M4 = -mthumb -mtune=cortex-m4 -mabi=aapcs-linux -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion -DSTM32F40XX -DHSE_VALUE=8000000
CFLAGS = -I. -I$(PYSRC) -I$(FATFSSRC) -I$(STMSRC) -Wall -ansi -std=gnu99 -Os -DNDEBUG $(CFLAGS_CORTEX_M4)
CFLAGS = -I. -I$(PYSRC) -I$(FATFSSRC) -I$(STMSRC) -Wall -ansi -std=gnu99 -Os -DNDEBUG $(CFLAGS_CORTEX_M4) -D$(TARGET)
#CFLAGS += -I$(STMOTGSRC) -DUSE_HOST_MODE -DUSE_OTG_MODE
LDFLAGS = --nostdlib -T stm32f405.ld
......
......@@ -7,66 +7,144 @@
#include "obj.h"
#include "led.h"
#define PYB_LED_R_PORT (GPIOA)
#define PYB_LED_R1_PIN (GPIO_Pin_8)
#define PYB_LED_R2_PIN (GPIO_Pin_10)
#define PYB_LED_G_PORT (GPIOC)
#define PYB_LED_G1_PIN (GPIO_Pin_4)
#define PYB_LED_G2_PIN (GPIO_Pin_5)
/* LED numbers, used internally */
#define PYB_LED_1 (1)
#define PYB_LED_2 (2)
#define PYB_LED_3 (3)
#define PYB_LED_4 (4)
#if defined(PYBOARD)
#define PYB_LED1_PORT (GPIOA)
#define PYB_LED1_PIN (GPIO_Pin_8)
#define PYB_LED2_PORT (GPIOA)
#define PYB_LED2_PIN (GPIO_Pin_10)
#define PYB_LED3_PORT (GPIOC)
#define PYB_LED3_PIN (GPIO_Pin_4)
#define PYB_LED4_PORT (GPIOC)
#define PYB_LED4_PIN (GPIO_Pin_5)
#define PYB_OTYPE (GPIO_OType_OD)
#define PYB_LED_ON(port, pin) (port->BSRRH = pin)
#define PYB_LED_OFF(port, pin) (port->BSRRL = pin)
#elif defined(STM32F4DISC)
#define PYB_LED1_PORT (GPIOD)
#define PYB_LED1_PIN (GPIO_Pin_14)
#define PYB_LED2_PORT (GPIOD)
#define PYB_LED2_PIN (GPIO_Pin_12)
#define PYB_LED3_PORT (GPIOD)
#define PYB_LED3_PIN (GPIO_Pin_15)
#define PYB_LED4_PORT (GPIOD)
#define PYB_LED4_PIN (GPIO_Pin_13)
#define PYB_OTYPE (GPIO_OType_PP)
#define PYB_LED_ON(port, pin) (port->BSRRL = pin)
#define PYB_LED_OFF(port, pin) (port->BSRRH = pin)
#endif
void led_init(void) {
// set the output high (so LED is off)
PYB_LED_R_PORT->BSRRL = PYB_LED_R1_PIN;
PYB_LED_R_PORT->BSRRL = PYB_LED_R2_PIN;
PYB_LED_G_PORT->BSRRL = PYB_LED_G1_PIN;
PYB_LED_G_PORT->BSRRL = PYB_LED_G2_PIN;
// make them open drain outputs
/* GPIO structure */
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = PYB_LED_R1_PIN | PYB_LED_R2_PIN;
/* Configure I/O speed, mode, output type and pull */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(PYB_LED_R_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = PYB_LED_G1_PIN | PYB_LED_G2_PIN;
GPIO_Init(PYB_LED_G_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_OType = PYB_OTYPE;
/* Turn off LEDs */
PYB_LED_OFF(PYB_LED1_PORT, PYB_LED1_PIN);
PYB_LED_OFF(PYB_LED2_PORT, PYB_LED2_PIN);
PYB_LED_OFF(PYB_LED3_PORT, PYB_LED1_PIN);
PYB_LED_OFF(PYB_LED4_PORT, PYB_LED2_PIN);
/* Initialize LEDs */
GPIO_InitStructure.GPIO_Pin = PYB_LED1_PIN;
GPIO_Init(PYB_LED1_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = PYB_LED2_PIN;
GPIO_Init(PYB_LED2_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = PYB_LED3_PIN;
GPIO_Init(PYB_LED3_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = PYB_LED4_PIN;
GPIO_Init(PYB_LED4_PORT, &GPIO_InitStructure);
}
void led_state(pyb_led_t led, int state) {
GPIO_TypeDef *port;
uint32_t pin;
switch (led) {
case PYB_LED_R1: port = PYB_LED_R_PORT; pin = PYB_LED_R1_PIN; break;
case PYB_LED_R2: port = PYB_LED_R_PORT; pin = PYB_LED_R2_PIN; break;
case PYB_LED_G1: port = PYB_LED_G_PORT; pin = PYB_LED_G1_PIN; break;
case PYB_LED_G2: port = PYB_LED_G_PORT; pin = PYB_LED_G2_PIN; break;
default: return;
case PYB_LED_1:
pin = PYB_LED1_PIN;
port = PYB_LED1_PORT;
break;
case PYB_LED_2:
pin = PYB_LED2_PIN;
port = PYB_LED2_PORT;
break;
case PYB_LED_3:
pin = PYB_LED3_PIN;
port = PYB_LED3_PORT;
break;
case PYB_LED_4:
pin = PYB_LED4_PIN;
port = PYB_LED4_PORT;
break;
default:
return;
}
if (state == 0) {
// turn LED off (output is high)
port->BSRRL = pin;
// turn LED off
PYB_LED_OFF(port, pin);
} else {
// turn LED on (output is low)
port->BSRRH = pin;
// turn LED on
PYB_LED_ON(port, pin);
}
}
void led_toggle(pyb_led_t led) {
GPIO_TypeDef *port;
uint32_t pin;
switch (led) {
case PYB_LED_R1: port = PYB_LED_R_PORT; pin = PYB_LED_R1_PIN; break;
case PYB_LED_R2: port = PYB_LED_R_PORT; pin = PYB_LED_R2_PIN; break;
case PYB_LED_G1: port = PYB_LED_G_PORT; pin = PYB_LED_G1_PIN; break;
case PYB_LED_G2: port = PYB_LED_G_PORT; pin = PYB_LED_G2_PIN; break;
default: return;
case PYB_LED_1:
pin = PYB_LED1_PIN;
port = PYB_LED1_PORT;
break;
case PYB_LED_2:
pin = PYB_LED2_PIN;
port = PYB_LED2_PORT;
break;
case PYB_LED_3:
pin = PYB_LED3_PIN;
port = PYB_LED3_PORT;
break;
case PYB_LED_4:
pin = PYB_LED4_PIN;
port = PYB_LED4_PORT;
break;
default:
return;
}
if (!(port->ODR & pin)) {
// turn LED off (output high)
port->BSRRL = pin;
// turn LED off
PYB_LED_OFF(port, pin);
} else {
// turn LED on (output low)
port->BSRRH = pin;
PYB_LED_ON(port, pin);
}
}
......@@ -85,19 +163,13 @@ void led_obj_print(void (*print)(void *env, const char *fmt, ...), void *env, mp
mp_obj_t led_obj_on(mp_obj_t self_in) {
pyb_led_obj_t *self = self_in;
switch (self->led_id) {
case 1: led_state(PYB_LED_G1, 1); break;
case 2: led_state(PYB_LED_G2, 1); break;
}
led_state(self->led_id, 1);
return mp_const_none;
}
mp_obj_t led_obj_off(mp_obj_t self_in) {
pyb_led_obj_t *self = self_in;
switch (self->led_id) {
case 1: led_state(PYB_LED_G1, 0); break;
case 2: led_state(PYB_LED_G2, 0); break;
}
led_state(self->led_id, 0);
return mp_const_none;
}
......
......@@ -3,6 +3,11 @@ typedef enum {
PYB_LED_R2 = 1,
PYB_LED_G1 = 2,
PYB_LED_G2 = 3,
//STM32F4DISC
PYB_LED_R = 0,
PYB_LED_G = 1,
PYB_LED_B = 2,
PYB_LED_O = 3,
} pyb_led_t;
void led_init(void);
......
......@@ -298,4 +298,10 @@ void EXTI15_10_IRQHandler(void) {
}
}
#if defined(STM32F4DISC)
void EXTI0_IRQHandler(void) {
// clear pending interrupt bit
EXTI_ClearITPendingBit(EXTI_Line0);
}
#endif
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
......@@ -9,36 +9,50 @@
#include "obj.h"
#include "usrsw.h"
#define PYB_USRSW_PORT (GPIOA)
#define PYB_USRSW_PIN (GPIO_Pin_13)
#if defined (PYBOARD)
#define USRSW_PORT (GPIOA)
#define USRSW_PIN (GPIO_Pin_13)
#define USRSW_EXTI_PIN (EXTI_PinSource13)
#define USRSW_EXTI_PORT (EXTI_PortSourceGPIOA)
#define USRSW_EXTI_LINE (EXTI_Line13)
#define USRSW_EXTI_IRQN (EXTI15_10_IRQn)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Rising)
#elif defined (STM32F4DISC)
#define USRSW_PORT (GPIOA)
#define USRSW_PIN (GPIO_Pin_0)
#define USRSW_EXTI_PIN (EXTI_PinSource0)
#define USRSW_EXTI_PORT (EXTI_PortSourceGPIOA)
#define USRSW_EXTI_LINE (EXTI_Line0)
#define USRSW_EXTI_IRQN (EXTI0_IRQn)
#define USRSW_EXTI_EDGE (EXTI_Trigger_Falling)
#endif
void switch_init(void) {
// make it an input with pull-up
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = PYB_USRSW_PIN;
GPIO_InitStructure.GPIO_Pin = USRSW_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(PYB_USRSW_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; /* allow external pull up/down */
GPIO_Init(USRSW_PORT, &GPIO_InitStructure);
// the rest does the EXTI interrupt
/* Enable SYSCFG clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Connect EXTI Line13 to PA13 pin */
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource13);
/* Connect EXTI Line to GPIO pin */
SYSCFG_EXTILineConfig(USRSW_EXTI_PORT, USRSW_EXTI_PIN);
/* Configure EXTI Line13, rising edge */
/* Configure EXTI Line */
EXTI_InitTypeDef EXTI_InitStructure;
EXTI_InitStructure.EXTI_Line = EXTI_Line13;
EXTI_InitStructure.EXTI_Line = USRSW_EXTI_LINE;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_Trigger = USRSW_EXTI_EDGE;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI15_10 Interrupt to the lowest priority */
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
NVIC_InitStructure.NVIC_IRQChannel = USRSW_EXTI_IRQN;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
......@@ -46,13 +60,24 @@ void switch_init(void) {
}
int switch_get(void) {
if (PYB_USRSW_PORT->IDR & PYB_USRSW_PIN) {
#if defined (PYBOARD)
if (USRSW_PORT->IDR & USRSW_PIN) {
// pulled high, so switch is not pressed
return 0;
} else {
// pulled low, so switch is pressed
return 1;
}
#elif defined (STM32F4DISC)
/* switch pulled down */
if (USRSW_PORT->IDR & USRSW_PIN) {
// pulled high, so switch is pressed
return 1;
} else {
// pulled low, so switch is not pressed
return 0;
}
#endif
}
/******************************************************************************/
......
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