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rt-thread/bsp/stm32_radio/board.c

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/*
* File : board.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2009 RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-08-23 Bernard first implementation
*/
#include <rthw.h>
#include <rtthread.h>
#include "stm32f10x.h"
#include "board.h"
static void rt_hw_console_init(void);
/**
* @addtogroup STM32
*/
/*@{*/
/*******************************************************************************
* Function Name : RCC_Configuration
* Description : Configures the different system clocks.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus;
/* RCC system reset(for debug purpose) */
RCC_DeInit();
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if (HSEStartUpStatus == SUCCESS)
{
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) ;
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while (RCC_GetSYSCLKSource() != 0x08) ;
}
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configures Vector Table base location.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NVIC_Configuration(void)
{
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
}
/*******************************************************************************
* Function Name : SysTick_Configuration
* Description : Configures the SysTick for OS tick.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SysTick_Configuration(void)
{
RCC_ClocksTypeDef rcc_clocks;
rt_uint32_t cnts;
RCC_GetClocksFreq(&rcc_clocks);
cnts = (rt_uint32_t)rcc_clocks.HCLK_Frequency / RT_TICK_PER_SECOND;
SysTick_Config(cnts);
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
}
extern void rt_hw_interrupt_thread_switch(void);
/**
* This is the timer interrupt service routine.
*
*/
void rt_hw_timer_handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
/* NAND Flash */
#include "fsmc_nand.h"
/**
* This function will initial STM32 Radio board.
*/
extern void FSMC_SRAM_Init(void);
void rt_hw_board_init()
{
NAND_IDTypeDef NAND_ID;
/* Configure the system clocks */
RCC_Configuration();
/* NVIC Configuration */
NVIC_Configuration();
/* Configure the SysTick */
SysTick_Configuration();
/* Console Initialization*/
rt_hw_console_init();
/* FSMC Initialization */
FSMC_NAND_Init();
/* NAND read ID command */
FSMC_NAND_ReadID(&NAND_ID);
rt_kprintf("Read the NAND ID:%02X%02X%02X%02X\n",NAND_ID.Maker_ID,NAND_ID.Device_ID,NAND_ID.Third_ID,NAND_ID.Fourth_ID);
/* SRAM init */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
FSMC_SRAM_Init();
{
/* PC6 for SDCard Rst */
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);
GPIO_SetBits(GPIOC,GPIO_Pin_6);
}
}
#if STM32_CONSOLE_USART == 1
#define CONSOLE_RX_PIN GPIO_Pin_9
#define CONSOLE_TX_PIN GPIO_Pin_10
#define CONSOLE_GPIO GPIOA
#define CONSOLE_USART USART1
#elif STM32_CONSOLE_USART == 2
#if defined(STM32_LD) || defined(STM32_MD)
#define CONSOLE_RX_PIN GPIO_Pin_6
#define CONSOLE_TX_PIN GPIO_Pin_5
#define CONSOLE_GPIO GPIOD
#elif defined(STM32_HD)
#define CONSOLE_RX_PIN GPIO_Pin_3
#define CONSOLE_TX_PIN GPIO_Pin_2
#define CONSOLE_GPIO GPIOA
#endif
#define CONSOLE_USART USART2
#elif STM32_CONSOLE_USART == 2
#define CONSOLE_RX_PIN GPIO_Pin_11
#define CONSOLE_TX_PIN GPIO_Pin_10
#define CONSOLE_GPIO GPIOB
#define CONSOLE_USART USART3
#endif
/* init console to support rt_kprintf */
static void rt_hw_console_init()
{
/* Enable USART1 and GPIOA clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1
| RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC
| RCC_APB2Periph_GPIOF, ENABLE);
#if STM32_CONSOLE_USART == 0
#else
/* GPIO configuration */
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure USART1 Tx (PA.09) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = CONSOLE_RX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(CONSOLE_GPIO, &GPIO_InitStructure);
/* Configure USART1 Rx (PA.10) as input floating */
GPIO_InitStructure.GPIO_Pin = CONSOLE_TX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(CONSOLE_GPIO, &GPIO_InitStructure);
}
/* USART configuration */
{
USART_InitTypeDef USART_InitStructure;
/* USART configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
- USART Clock disabled
- USART CPOL: Clock is active low
- USART CPHA: Data is captured on the middle
- USART LastBit: The clock pulse of the last data bit is not output to
the SCLK pin
*/
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(CONSOLE_USART, &USART_InitStructure);
/* Enable USART1 */
USART_Cmd(CONSOLE_USART, ENABLE);
}
#endif
}
/* write one character to serial, must not trigger interrupt */
static void rt_hw_console_putc(const char c)
{
/*
to be polite with serial console add a line feed
to the carriage return character
*/
if (c=='\n')rt_hw_console_putc('\r');
while (!(CONSOLE_USART->SR & USART_FLAG_TXE));
CONSOLE_USART->DR = (c & 0x1FF);
}
/**
* This function is used by rt_kprintf to display a string on console.
*
* @param str the displayed string
*/
void rt_hw_console_output(const char* str)
{
#if STM32_CONSOLE_USART == 0
/* no console */
#else
while (*str)
{
rt_hw_console_putc (*str++);
}
#endif
}
/*@}*/
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