[rtems commit] bsp/stm32f4: Add IO and RCC
Sebastian Huber
sebh at rtems.org
Thu Apr 12 20:37:17 UTC 2012
Module: rtems
Branch: master
Commit: 228ece91275b498581872166d44b025e0e47e022
Changeset: http://git.rtems.org/rtems/commit/?id=228ece91275b498581872166d44b025e0e47e022
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Thu Apr 12 21:27:56 2012 +0200
bsp/stm32f4: Add IO and RCC
---
c/src/lib/libbsp/arm/stm32f4/Makefile.am | 4 +
.../libbsp/arm/stm32f4/console/console-config.c | 12 +-
c/src/lib/libbsp/arm/stm32f4/console/usart.c | 63 +++++++++++-
c/src/lib/libbsp/arm/stm32f4/include/io.h | 114 ++++++++++++++++++++
c/src/lib/libbsp/arm/stm32f4/include/rcc.h | 103 ++++++++++++++++++
c/src/lib/libbsp/arm/stm32f4/include/stm32f4.h | 93 ++++++++--------
c/src/lib/libbsp/arm/stm32f4/preinstall.am | 8 ++
c/src/lib/libbsp/arm/stm32f4/startup/io.c | 75 +++++++++++++
c/src/lib/libbsp/arm/stm32f4/startup/rcc.c | 70 ++++++++++++
9 files changed, 487 insertions(+), 55 deletions(-)
diff --git a/c/src/lib/libbsp/arm/stm32f4/Makefile.am b/c/src/lib/libbsp/arm/stm32f4/Makefile.am
index 1b76e67..88445fe 100644
--- a/c/src/lib/libbsp/arm/stm32f4/Makefile.am
+++ b/c/src/lib/libbsp/arm/stm32f4/Makefile.am
@@ -46,6 +46,8 @@ include_bsp_HEADERS += ../shared/armv7m/include/armv7m-irq.h
include_bsp_HEADERS += include/irq.h
include_bsp_HEADERS += include/usart.h
include_bsp_HEADERS += include/stm32f4.h
+include_bsp_HEADERS += include/io.h
+include_bsp_HEADERS += include/rcc.h
###############################################################################
# LibBSP #
@@ -75,6 +77,8 @@ libbsp_a_SOURCES += ../shared/startup/bsp-start-memcpy.S
libbsp_a_SOURCES += startup/bspstart.c
libbsp_a_SOURCES += startup/bspstarthook.c
libbsp_a_SOURCES += startup/bspreset.c
+libbsp_a_SOURCES += startup/io.c
+libbsp_a_SOURCES += startup/rcc.c
# IRQ
libbsp_a_SOURCES += ../../shared/src/irq-default-handler.c
diff --git a/c/src/lib/libbsp/arm/stm32f4/console/console-config.c b/c/src/lib/libbsp/arm/stm32f4/console/console-config.c
index fabda7c..cd68032 100644
--- a/c/src/lib/libbsp/arm/stm32f4/console/console-config.c
+++ b/c/src/lib/libbsp/arm/stm32f4/console/console-config.c
@@ -27,7 +27,7 @@ console_tbl Console_Configuration_Ports [] = {
.sDeviceName = "/dev/ttyS0",
.deviceType = SERIAL_CUSTOM,
.pDeviceFns = &stm32f4_usart_fns,
- .ulCtrlPort1 = (uint32_t) &STM32F4_USART_1,
+ .ulCtrlPort1 = (uint32_t) STM32F4_USART_1,
.ulCtrlPort2 = 0,
.ulClock = STM32F4_USART_BAUD,
.ulIntVector = STM32F4_IRQ_USART1
@@ -38,7 +38,7 @@ console_tbl Console_Configuration_Ports [] = {
.sDeviceName = "/dev/ttyS2",
.deviceType = SERIAL_CUSTOM,
.pDeviceFns = &stm32f4_usart_fns,
- .ulCtrlPort1 = (uint32_t) &STM32F4_USART_2,
+ .ulCtrlPort1 = (uint32_t) STM32F4_USART_2,
.ulCtrlPort2 = 1,
.ulClock = STM32F4_USART_BAUD,
.ulIntVector = STM32F4_IRQ_USART2
@@ -49,7 +49,7 @@ console_tbl Console_Configuration_Ports [] = {
.sDeviceName = "/dev/ttyS2",
.deviceType = SERIAL_CUSTOM,
.pDeviceFns = &stm32f4_usart_fns,
- .ulCtrlPort1 = (uint32_t) &STM32F4_USART_3,
+ .ulCtrlPort1 = (uint32_t) STM32F4_USART_3,
.ulCtrlPort2 = 2,
.ulClock = STM32F4_USART_BAUD,
.ulIntVector = STM32F4_IRQ_USART3
@@ -60,7 +60,7 @@ console_tbl Console_Configuration_Ports [] = {
.sDeviceName = "/dev/ttyS3",
.deviceType = SERIAL_CUSTOM,
.pDeviceFns = &stm32f4_usart_fns,
- .ulCtrlPort1 = (uint32_t) &STM32F4_USART_4,
+ .ulCtrlPort1 = (uint32_t) STM32F4_USART_4,
.ulCtrlPort2 = 3,
.ulClock = STM32F4_USART_BAUD,
.ulIntVector = STM32F4_IRQ_UART4
@@ -71,7 +71,7 @@ console_tbl Console_Configuration_Ports [] = {
.sDeviceName = "/dev/ttyS4",
.deviceType = SERIAL_CUSTOM,
.pDeviceFns = &stm32f4_usart_fns,
- .ulCtrlPort1 = (uint32_t) &STM32F4_USART_5,
+ .ulCtrlPort1 = (uint32_t) STM32F4_USART_5,
.ulCtrlPort2 = 4,
.ulClock = STM32F4_USART_BAUD,
.ulIntVector = STM32F4_IRQ_UART5
@@ -82,7 +82,7 @@ console_tbl Console_Configuration_Ports [] = {
.sDeviceName = "/dev/ttyS5",
.deviceType = SERIAL_CUSTOM,
.pDeviceFns = &stm32f4_usart_fns,
- .ulCtrlPort1 = (uint32_t) &STM32F4_USART_6,
+ .ulCtrlPort1 = (uint32_t) STM32F4_USART_6,
.ulCtrlPort2 = 5,
.ulClock = STM32F4_USART_BAUD,
.ulIntVector = STM32F4_IRQ_USART6
diff --git a/c/src/lib/libbsp/arm/stm32f4/console/usart.c b/c/src/lib/libbsp/arm/stm32f4/console/usart.c
index 539423f..f18dd71 100644
--- a/c/src/lib/libbsp/arm/stm32f4/console/usart.c
+++ b/c/src/lib/libbsp/arm/stm32f4/console/usart.c
@@ -15,6 +15,8 @@
#include <libchip/sersupp.h>
#include <bsp.h>
+#include <bsp/io.h>
+#include <bsp/rcc.h>
#include <bsp/irq.h>
#include <bsp/usart.h>
#include <bsp/stm32f4.h>
@@ -31,6 +33,20 @@ static rtems_vector_number usart_get_irq_number(const console_tbl *ct)
}
#endif
+static const stm32f4_rcc_index usart_rcc_index [] = {
+ STM32F4_RCC_USART1,
+ STM32F4_RCC_USART2,
+ STM32F4_RCC_USART3,
+ STM32F4_RCC_UART4,
+ STM32F4_RCC_UART5,
+ STM32F4_RCC_USART6
+};
+
+static stm32f4_rcc_index usart_get_rcc_index(const console_tbl *ct)
+{
+ return usart_rcc_index [ct->ulCtrlPort2];
+}
+
static const uint8_t usart_pclk_index [] = { 1, 0, 0, 0, 0, 1 };
static const uint32_t usart_pclk_by_index [] = {
@@ -102,15 +118,58 @@ static uint32_t usart_get_bbr(
| STM32F4_USART_BBR_DIV_FRACTION(div_fraction);
}
+#define USART_CFG(port, idx, altfunc) \
+ { \
+ .pin = STM32F4_GPIO_PIN(port, idx), \
+ .mode = STM32F4_GPIO_MODE_AF, \
+ .otype = STM32F4_GPIO_OTYPE_PUSH_PULL, \
+ .ospeed = STM32F4_GPIO_OSPEED_2_MHZ, \
+ .pupd = STM32F4_GPIO_PULL_UP, \
+ .af = altfunc \
+ }
+
+static const stm32f4_gpio_config usart_gpio_config [] [2] = {
+ {
+ USART_CFG(0, 9, STM32F4_GPIO_AF_USART1),
+ USART_CFG(0, 10, STM32F4_GPIO_AF_USART1)
+ }, {
+ USART_CFG(0, 2, STM32F4_GPIO_AF_USART2),
+ USART_CFG(0, 3, STM32F4_GPIO_AF_USART2)
+ }, {
+ USART_CFG(3, 8, STM32F4_GPIO_AF_USART3),
+ USART_CFG(3, 9, STM32F4_GPIO_AF_USART3)
+ }, {
+ USART_CFG(0, 1, STM32F4_GPIO_AF_UART4),
+ USART_CFG(0, 2, STM32F4_GPIO_AF_UART4)
+ }, {
+ USART_CFG(2, 11, STM32F4_GPIO_AF_UART5),
+ USART_CFG(2, 12, STM32F4_GPIO_AF_UART5)
+ }, {
+ USART_CFG(2, 6, STM32F4_GPIO_AF_USART6),
+ USART_CFG(2, 7, STM32F4_GPIO_AF_USART6)
+ }
+};
+
+static void usart_set_gpio_config(const console_tbl *ct)
+{
+ const stm32f4_gpio_config *config = usart_gpio_config [ct->ulCtrlPort2];
+
+ stm32f4_rcc_set_gpio_clock(config [0].pin, true);
+ stm32f4_gpio_set_config(&config [0]);
+ stm32f4_rcc_set_gpio_clock(config [1].pin, true);
+ stm32f4_gpio_set_config(&config [1]);
+}
+
static void usart_initialize(int minor)
{
const console_tbl *ct = Console_Port_Tbl [minor];
volatile stm32f4_usart *usart = usart_get_regs(ct);
uint32_t pclk = usart_get_pclk(ct);
uint32_t baud = usart_get_baud(ct);
- volatile stm32f4_rcc *rcc = &STM32F4_RCC;
+ stm32f4_rcc_index rcc_index = usart_get_rcc_index(ct);
- rcc->apb2enr |= STM32F4_RCC_APB2ENR_USART1_EN;
+ stm32f4_rcc_set_clock(rcc_index, true);
+ usart_set_gpio_config(ct);
usart->cr1 = 0;
usart->cr2 = 0;
diff --git a/c/src/lib/libbsp/arm/stm32f4/include/io.h b/c/src/lib/libbsp/arm/stm32f4/include/io.h
new file mode 100644
index 0000000..539bba5
--- /dev/null
+++ b/c/src/lib/libbsp/arm/stm32f4/include/io.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2012 Sebastian Huber. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifndef LIBBSP_ARM_STM32F4_IO_H
+#define LIBBSP_ARM_STM32F4_IO_H
+
+#include <stdbool.h>
+
+#include <bsp/stm32f4.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+typedef enum {
+ STM32F4_GPIO_MODE_INPUT,
+ STM32F4_GPIO_MODE_OUTPUT,
+ STM32F4_GPIO_MODE_AF,
+ STM32F4_GPIO_MODE_ANALOG
+} stm32f4_gpio_mode;
+
+typedef enum {
+ STM32F4_GPIO_OTYPE_PUSH_PULL,
+ STM32F4_GPIO_OTYPE_OPEN_DRAIN
+} stm32f4_gpio_otype;
+
+typedef enum {
+ STM32F4_GPIO_OSPEED_2_MHZ,
+ STM32F4_GPIO_OSPEED_25_MHZ,
+ STM32F4_GPIO_OSPEED_50_MHZ,
+ STM32F4_GPIO_OSPEED_100_MHZ
+} stm32f4_gpio_ospeed;
+
+typedef enum {
+ STM32F4_GPIO_NO_PULL,
+ STM32F4_GPIO_PULL_UP,
+ STM32F4_GPIO_PULL_DOWN
+} stm32f4_gpio_pull;
+
+typedef enum {
+ STM32F4_GPIO_AF_SYSTEM = 0,
+ STM32F4_GPIO_AF_TIM1 = 1,
+ STM32F4_GPIO_AF_TIM2 = 1,
+ STM32F4_GPIO_AF_TIM3 = 2,
+ STM32F4_GPIO_AF_TIM4 = 2,
+ STM32F4_GPIO_AF_TIM5 = 2,
+ STM32F4_GPIO_AF_TIM8 = 3,
+ STM32F4_GPIO_AF_TIM9 = 3,
+ STM32F4_GPIO_AF_TIM10 = 3,
+ STM32F4_GPIO_AF_TIM11 = 3,
+ STM32F4_GPIO_AF_I2C1 = 4,
+ STM32F4_GPIO_AF_I2C2 = 4,
+ STM32F4_GPIO_AF_I2C3 = 4,
+ STM32F4_GPIO_AF_SPI1 = 5,
+ STM32F4_GPIO_AF_SPI2 = 5,
+ STM32F4_GPIO_AF_SPI3 = 6,
+ STM32F4_GPIO_AF_USART1 = 7,
+ STM32F4_GPIO_AF_USART2 = 7,
+ STM32F4_GPIO_AF_USART3 = 7,
+ STM32F4_GPIO_AF_UART4 = 8,
+ STM32F4_GPIO_AF_UART5 = 8,
+ STM32F4_GPIO_AF_USART6 = 8,
+ STM32F4_GPIO_AF_CAN1 = 9,
+ STM32F4_GPIO_AF_CAN2 = 9,
+ STM32F4_GPIO_AF_TIM12 = 9,
+ STM32F4_GPIO_AF_TIM13 = 9,
+ STM32F4_GPIO_AF_TIM14 = 9,
+ STM32F4_GPIO_AF_OTG_FS = 10,
+ STM32F4_GPIO_AF_OTG_HS = 10,
+ STM32F4_GPIO_AF_ETH = 11,
+ STM32F4_GPIO_AF_FSMC = 12,
+ STM32F4_GPIO_AF_OTG_HS_FS = 12,
+ STM32F4_GPIO_AF_SDIO = 12,
+ STM32F4_GPIO_AF_DCMI = 13,
+ STM32F4_GPIO_AF_EVENTOUT = 15
+} stm32f4_gpio_af;
+
+#define STM32F4_GPIO_PIN(port, index) ((((port) << 4) | (index)) & 0xff)
+
+#define STM32F4_GPIO_PORT_OF_PIN(pin) (((pin) >> 4) & 0xf)
+
+#define STM32F4_GPIO_INDEX_OF_PIN(pin) ((pin) & 0xf)
+
+typedef struct {
+ uint32_t pin : 8;
+ uint32_t mode : 2;
+ uint32_t otype : 1;
+ uint32_t ospeed : 2;
+ uint32_t pupd : 2;
+ uint32_t af : 4;
+} stm32f4_gpio_config;
+
+void stm32f4_gpio_set_config(const stm32f4_gpio_config *config);
+
+void stm32f4_gpio_set_output(int pin, bool set);
+
+bool stm32f4_gpio_get_input(int pin);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_ARM_STM32F4_IO_H */
diff --git a/c/src/lib/libbsp/arm/stm32f4/include/rcc.h b/c/src/lib/libbsp/arm/stm32f4/include/rcc.h
new file mode 100644
index 0000000..e2e4d13
--- /dev/null
+++ b/c/src/lib/libbsp/arm/stm32f4/include/rcc.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2012 Sebastian Huber. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifndef LIBBSP_ARM_STM32F4_RCC_H
+#define LIBBSP_ARM_STM32F4_RCC_H
+
+#include <stdbool.h>
+
+#include <bsp/stm32f4.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#define STM32F4_RCC_INDEX(reg, idx) (((reg) << 5) | (idx))
+
+typedef enum {
+ STM32F4_RCC_OTGHS = STM32F4_RCC_INDEX(0, 29),
+ STM32F4_RCC_ETHMAC = STM32F4_RCC_INDEX(0, 25),
+ STM32F4_RCC_DMA2 = STM32F4_RCC_INDEX(0, 22),
+ STM32F4_RCC_DMA1 = STM32F4_RCC_INDEX(0, 21),
+ STM32F4_RCC_CRC = STM32F4_RCC_INDEX(0, 12),
+ STM32F4_RCC_GPIOI = STM32F4_RCC_INDEX(0, 8),
+ STM32F4_RCC_GPIOH = STM32F4_RCC_INDEX(0, 7),
+ STM32F4_RCC_GPIOG = STM32F4_RCC_INDEX(0, 6),
+ STM32F4_RCC_GPIOF = STM32F4_RCC_INDEX(0, 5),
+ STM32F4_RCC_GPIOE = STM32F4_RCC_INDEX(0, 4),
+ STM32F4_RCC_GPIOD = STM32F4_RCC_INDEX(0, 3),
+ STM32F4_RCC_GPIOC = STM32F4_RCC_INDEX(0, 2),
+ STM32F4_RCC_GPIOB = STM32F4_RCC_INDEX(0, 1),
+ STM32F4_RCC_GPIOA = STM32F4_RCC_INDEX(0, 0),
+
+ STM32F4_RCC_OTGFS = STM32F4_RCC_INDEX(1, 7),
+ STM32F4_RCC_RNG = STM32F4_RCC_INDEX(1, 6),
+ STM32F4_RCC_HASH = STM32F4_RCC_INDEX(1, 5),
+ STM32F4_RCC_CRYP = STM32F4_RCC_INDEX(1, 4),
+ STM32F4_RCC_DCMI = STM32F4_RCC_INDEX(1, 0),
+
+ STM32F4_RCC_FSMCR = STM32F4_RCC_INDEX(2, 0),
+
+ STM32F4_RCC_DAC = STM32F4_RCC_INDEX(4, 29),
+ STM32F4_RCC_PWR = STM32F4_RCC_INDEX(4, 28),
+ STM32F4_RCC_CAN2 = STM32F4_RCC_INDEX(4, 26),
+ STM32F4_RCC_CAN1 = STM32F4_RCC_INDEX(4, 25),
+ STM32F4_RCC_I2C3 = STM32F4_RCC_INDEX(4, 23),
+ STM32F4_RCC_I2C2 = STM32F4_RCC_INDEX(4, 22),
+ STM32F4_RCC_I2C1 = STM32F4_RCC_INDEX(4, 21),
+ STM32F4_RCC_UART5 = STM32F4_RCC_INDEX(4, 20),
+ STM32F4_RCC_UART4 = STM32F4_RCC_INDEX(4, 19),
+ STM32F4_RCC_USART3 = STM32F4_RCC_INDEX(4, 18),
+ STM32F4_RCC_USART2 = STM32F4_RCC_INDEX(4, 17),
+ STM32F4_RCC_SPI3 = STM32F4_RCC_INDEX(4, 15),
+ STM32F4_RCC_SPI2 = STM32F4_RCC_INDEX(4, 14),
+ STM32F4_RCC_WWDG = STM32F4_RCC_INDEX(4, 11),
+ STM32F4_RCC_TIM14 = STM32F4_RCC_INDEX(4, 8),
+ STM32F4_RCC_TIM13 = STM32F4_RCC_INDEX(4, 7),
+ STM32F4_RCC_TIM12 = STM32F4_RCC_INDEX(4, 6),
+ STM32F4_RCC_TIM7 = STM32F4_RCC_INDEX(4, 5),
+ STM32F4_RCC_TIM6 = STM32F4_RCC_INDEX(4, 4),
+ STM32F4_RCC_TIM5 = STM32F4_RCC_INDEX(4, 3),
+ STM32F4_RCC_TIM4 = STM32F4_RCC_INDEX(4, 2),
+ STM32F4_RCC_TIM3 = STM32F4_RCC_INDEX(4, 1),
+ STM32F4_RCC_TIM2 = STM32F4_RCC_INDEX(4, 0),
+
+ STM32F4_RCC_TIM11 = STM32F4_RCC_INDEX(5, 18),
+ STM32F4_RCC_TIM10 = STM32F4_RCC_INDEX(5, 17),
+ STM32F4_RCC_TIM9 = STM32F4_RCC_INDEX(5, 16),
+ STM32F4_RCC_SYSCFG = STM32F4_RCC_INDEX(5, 14),
+ STM32F4_RCC_SPI1 = STM32F4_RCC_INDEX(5, 12),
+ STM32F4_RCC_SDIO = STM32F4_RCC_INDEX(5, 11),
+ STM32F4_RCC_ADC3 = STM32F4_RCC_INDEX(5, 10),
+ STM32F4_RCC_ADC2 = STM32F4_RCC_INDEX(5, 9),
+ STM32F4_RCC_ADC1 = STM32F4_RCC_INDEX(5, 8),
+ STM32F4_RCC_USART6 = STM32F4_RCC_INDEX(5, 5),
+ STM32F4_RCC_USART1 = STM32F4_RCC_INDEX(5, 4),
+ STM32F4_RCC_TIM8 = STM32F4_RCC_INDEX(5, 1),
+ STM32F4_RCC_TIM1 = STM32F4_RCC_INDEX(5, 0),
+} stm32f4_rcc_index;
+
+void stm32f4_rcc_reset(stm32f4_rcc_index index, bool set);
+
+void stm32f4_rcc_set_clock(stm32f4_rcc_index index, bool set);
+
+void stm32f4_rcc_set_gpio_clock(int pin, bool set);
+
+void stm32f4_rcc_set_low_power_clock(stm32f4_rcc_index index, bool set);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_ARM_STM32F4_RCC_H */
diff --git a/c/src/lib/libbsp/arm/stm32f4/include/stm32f4.h b/c/src/lib/libbsp/arm/stm32f4/include/stm32f4.h
index 683012b..b07933f 100644
--- a/c/src/lib/libbsp/arm/stm32f4/include/stm32f4.h
+++ b/c/src/lib/libbsp/arm/stm32f4/include/stm32f4.h
@@ -20,48 +20,45 @@
#define STM32F4_BASE 0x00
typedef struct {
- uint32_t reserved_00 [16];
- uint32_t apb1enr;
-#define STM32F4_RCC_APB1ENR_DAC_EN BSP_BIT32(29)
-#define STM32F4_RCC_APB1ENR_PWR_EN BSP_BIT32(28)
-#define STM32F4_RCC_APB1ENR_CAN2_EN BSP_BIT32(26)
-#define STM32F4_RCC_APB1ENR_CAN1_EN BSP_BIT32(25)
-#define STM32F4_RCC_APB1ENR_I2C3_EN BSP_BIT32(23)
-#define STM32F4_RCC_APB1ENR_I2C2_EN BSP_BIT32(22)
-#define STM32F4_RCC_APB1ENR_I2C1_EN BSP_BIT32(21)
-#define STM32F4_RCC_APB1ENR_UART5_EN BSP_BIT32(20)
-#define STM32F4_RCC_APB1ENR_UART4_EN BSP_BIT32(19)
-#define STM32F4_RCC_APB1ENR_USART3_EN BSP_BIT32(18)
-#define STM32F4_RCC_APB1ENR_USART2_EN BSP_BIT32(17)
-#define STM32F4_RCC_APB1ENR_SPI3_EN BSP_BIT32(15)
-#define STM32F4_RCC_APB1ENR_SPI2_EN BSP_BIT32(14)
-#define STM32F4_RCC_APB1ENR_WWDG_EN BSP_BIT32(11)
-#define STM32F4_RCC_APB1ENR_TIM14_EN BSP_BIT32(8)
-#define STM32F4_RCC_APB1ENR_TIM13_EN BSP_BIT32(7)
-#define STM32F4_RCC_APB1ENR_TIM12_EN BSP_BIT32(6)
-#define STM32F4_RCC_APB1ENR_TIM7_EN BSP_BIT32(5)
-#define STM32F4_RCC_APB1ENR_TIM6_EN BSP_BIT32(4)
-#define STM32F4_RCC_APB1ENR_TIM5_EN BSP_BIT32(3)
-#define STM32F4_RCC_APB1ENR_TIM4_EN BSP_BIT32(2)
-#define STM32F4_RCC_APB1ENR_TIM3_EN BSP_BIT32(1)
-#define STM32F4_RCC_APB1ENR_TIM2_EN BSP_BIT32(0)
- uint32_t apb2enr;
-#define STM32F4_RCC_APB2ENR_TIM11 BSP_BIT32(18)
-#define STM32F4_RCC_APB2ENR_TIM10_EN BSP_BIT32(17)
-#define STM32F4_RCC_APB2ENR_TIM9_EN BSP_BIT32(16)
-#define STM32F4_RCC_APB2ENR_SYSCFG_EN BSP_BIT32(14)
-#define STM32F4_RCC_APB2ENR_SPI1_EN BSP_BIT32(12)
-#define STM32F4_RCC_APB2ENR_SDIO_EN BSP_BIT32(11)
-#define STM32F4_RCC_APB2ENR_ADC3_EN BSP_BIT32(10)
-#define STM32F4_RCC_APB2ENR_ADC2_EN BSP_BIT32(9)
-#define STM32F4_RCC_APB2ENR_ADC1_EN BSP_BIT32(8)
-#define STM32F4_RCC_APB2ENR_USART6_EN BSP_BIT32(5)
-#define STM32F4_RCC_APB2ENR_USART1_EN BSP_BIT32(4)
-#define STM32F4_RCC_APB2ENR_TIM8_EN BSP_BIT32(1)
-#define STM32F4_RCC_APB2ENR_TIM1_EN BSP_BIT32(0)
+ uint32_t moder;
+ uint32_t otyper;
+ uint32_t ospeedr;
+ uint32_t pupdr;
+ uint32_t idr;
+ uint32_t odr;
+ uint32_t bsrr;
+ uint32_t lckr;
+ uint32_t afr [2];
+ uint32_t reserved_28 [246];
+} stm32f4_gpio;
+
+#define STM32F4_GPIO(i) ((volatile stm32f4_gpio *) (STM32F4_BASE + 0x40020000) + (i))
+
+typedef struct {
+ uint32_t cr;
+ uint32_t pllcfgr;
+ uint32_t cfgr;
+ uint32_t cir;
+ uint32_t ahbrstr [3];
+ uint32_t reserved_1c;
+ uint32_t apbrstr [2];
+ uint32_t reserved_28 [2];
+ uint32_t ahbenr [3];
+ uint32_t reserved_3c;
+ uint32_t apbenr [2];
+ uint32_t reserved_48 [2];
+ uint32_t ahblpenr [3];
+ uint32_t reserved_5c;
+ uint32_t apblpenr [2];
+ uint32_t reserved_68 [2];
+ uint32_t bdcr;
+ uint32_t csr;
+ uint32_t reserved_78 [2];
+ uint32_t sscgr;
+ uint32_t plli2scfgr;
} stm32f4_rcc;
-#define STM32F4_RCC (*(volatile stm32f4_rcc *) (STM32F4_BASE + 0x40023800))
+#define STM32F4_RCC ((volatile stm32f4_rcc *) (STM32F4_BASE + 0x40023800))
typedef struct {
uint32_t sr;
@@ -138,12 +135,12 @@ typedef struct {
#define STM32F4_USART_GTPR_PSC_SET(reg, val) BSP_FLD32SET(reg, val, 0, 7)
} stm32f4_usart;
-#define STM32F4_USART_1 (*(volatile stm32f4_usart *) (STM32F4_BASE + 0x40011000))
-#define STM32F4_USART_2 (*(volatile stm32f4_usart *) (STM32F4_BASE + 0x40004400))
-#define STM32F4_USART_3 (*(volatile stm32f4_usart *) (STM32F4_BASE + 0x40004800))
-#define STM32F4_USART_4 (*(volatile stm32f4_usart *) (STM32F4_BASE + 0x40004c00))
-#define STM32F4_USART_5 (*(volatile stm32f4_usart *) (STM32F4_BASE + 0x40005000))
-#define STM32F4_USART_6 (*(volatile stm32f4_usart *) (STM32F4_BASE + 0x40011400))
+#define STM32F4_USART_1 ((volatile stm32f4_usart *) (STM32F4_BASE + 0x40011000))
+#define STM32F4_USART_2 ((volatile stm32f4_usart *) (STM32F4_BASE + 0x40004400))
+#define STM32F4_USART_3 ((volatile stm32f4_usart *) (STM32F4_BASE + 0x40004800))
+#define STM32F4_USART_4 ((volatile stm32f4_usart *) (STM32F4_BASE + 0x40004c00))
+#define STM32F4_USART_5 ((volatile stm32f4_usart *) (STM32F4_BASE + 0x40005000))
+#define STM32F4_USART_6 ((volatile stm32f4_usart *) (STM32F4_BASE + 0x40011400))
typedef struct {
uint32_t reserved_00 [268439808];
@@ -158,7 +155,9 @@ typedef struct {
stm32f4_usart usart_1;
uint32_t reserved_4001101c [249];
stm32f4_usart usart_6;
- uint32_t reserved_4001141c [18681];
+ uint32_t reserved_4001141c [15097];
+ stm32f4_gpio gpio [9];
+ uint32_t reserved_40022400 [1280];
stm32f4_rcc rcc;
} stm32f4;
diff --git a/c/src/lib/libbsp/arm/stm32f4/preinstall.am b/c/src/lib/libbsp/arm/stm32f4/preinstall.am
index ded068e..130079b 100644
--- a/c/src/lib/libbsp/arm/stm32f4/preinstall.am
+++ b/c/src/lib/libbsp/arm/stm32f4/preinstall.am
@@ -105,3 +105,11 @@ $(PROJECT_INCLUDE)/bsp/stm32f4.h: include/stm32f4.h $(PROJECT_INCLUDE)/bsp/$(dir
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/stm32f4.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/stm32f4.h
+$(PROJECT_INCLUDE)/bsp/io.h: include/io.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/io.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/io.h
+
+$(PROJECT_INCLUDE)/bsp/rcc.h: include/rcc.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/rcc.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/rcc.h
+
diff --git a/c/src/lib/libbsp/arm/stm32f4/startup/io.c b/c/src/lib/libbsp/arm/stm32f4/startup/io.c
new file mode 100644
index 0000000..1bba73c
--- /dev/null
+++ b/c/src/lib/libbsp/arm/stm32f4/startup/io.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2012 Sebastian Huber. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#include <bsp/io.h>
+
+#include <rtems.h>
+
+static void clear_and_set(
+ volatile uint32_t *reg,
+ unsigned index,
+ unsigned width,
+ uint32_t set
+)
+{
+ uint32_t one = 1;
+ uint32_t mask = (one << width) - one;
+ unsigned shift = width * index;
+ uint32_t val = *reg;
+
+ val &= ~(mask << shift);
+ val |= set << shift;
+
+ *reg = val;
+}
+
+void stm32f4_gpio_set_config(const stm32f4_gpio_config *config)
+{
+ unsigned pin = config->pin;
+ unsigned port = STM32F4_GPIO_PORT_OF_PIN(pin);
+ volatile stm32f4_gpio *gpio = STM32F4_GPIO(port);
+ unsigned index = STM32F4_GPIO_INDEX_OF_PIN(pin);
+ unsigned af_reg = index >> 8;
+ unsigned af_index = index & 0x3;
+ rtems_interrupt_level level;
+
+ rtems_interrupt_disable(level);
+ clear_and_set(&gpio->moder, index, 2, config->mode);
+ clear_and_set(&gpio->afr [af_reg], af_index, 4, config->af);
+ clear_and_set(&gpio->pupdr, index, 2, config->pupd);
+ clear_and_set(&gpio->otyper, index, 1, config->otype);
+ clear_and_set(&gpio->ospeedr, index, 2, config->ospeed);
+ rtems_interrupt_enable(level);
+}
+
+void stm32f4_gpio_set_output(int pin, bool set)
+{
+ int port = STM32F4_GPIO_PORT_OF_PIN(pin);
+ volatile stm32f4_gpio *gpio = STM32F4_GPIO(port);
+ int index = STM32F4_GPIO_INDEX_OF_PIN(pin);
+ int offset = set ? 0 : 16;
+ uint32_t one = 1;
+
+ gpio->bsrr = one << (index + offset);
+}
+
+bool stm32f4_gpio_get_input(int pin)
+{
+ int port = STM32F4_GPIO_PORT_OF_PIN(pin);
+ volatile stm32f4_gpio *gpio = STM32F4_GPIO(port);
+ int index = STM32F4_GPIO_INDEX_OF_PIN(pin);
+ uint32_t one = 1;
+
+ return (gpio->idr & (one << index)) != 0;
+}
diff --git a/c/src/lib/libbsp/arm/stm32f4/startup/rcc.c b/c/src/lib/libbsp/arm/stm32f4/startup/rcc.c
new file mode 100644
index 0000000..aa3022c
--- /dev/null
+++ b/c/src/lib/libbsp/arm/stm32f4/startup/rcc.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2012 Sebastian Huber. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Obere Lagerstr. 30
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#include <bsp/rcc.h>
+#include <bsp/io.h>
+
+#include <rtems.h>
+
+static void rcc_set(
+ stm32f4_rcc_index index,
+ bool set,
+ volatile uint32_t *regs
+)
+{
+ int reg = index >> 5;
+ uint32_t one = 1;
+ uint32_t bit = one << (index & 0x1f);
+ rtems_interrupt_level level;
+ uint32_t val;
+
+ rtems_interrupt_disable(level);
+ val = regs [reg];
+ if (set) {
+ val |= bit;
+ } else {
+ val &= ~bit;
+ }
+ regs [reg] = val;
+ rtems_interrupt_enable(level);
+}
+
+void stm32f4_rcc_reset(stm32f4_rcc_index index, bool set)
+{
+ volatile stm32f4_rcc *rcc = STM32F4_RCC;
+
+ rcc_set(index, set, &rcc->ahbrstr [0]);
+}
+
+void stm32f4_rcc_set_clock(stm32f4_rcc_index index, bool set)
+{
+ volatile stm32f4_rcc *rcc = STM32F4_RCC;
+
+ rcc_set(index, set, &rcc->ahbenr [0]);
+}
+
+void stm32f4_rcc_set_gpio_clock(int pin, bool set)
+{
+ int port = STM32F4_GPIO_PORT_OF_PIN(pin);
+ stm32f4_rcc_index index = STM32F4_RCC_GPIOA + port;
+
+ stm32f4_rcc_set_clock(index, set);
+}
+
+void stm32f4_rcc_set_low_power_clock(stm32f4_rcc_index index, bool set)
+{
+ volatile stm32f4_rcc *rcc = STM32F4_RCC;
+
+ rcc_set(index, set, &rcc->ahblpenr [0]);
+}
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