380 lines
12 KiB
C
380 lines
12 KiB
C
/*
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* File : board.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009 RT-Thread Develop Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://openlab.rt-thread.com/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2006-08-23 Bernard first implementation
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "stm32f10x_lib.h"
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static void rt_hw_console_init(void);
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/**
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* @addtogroup STM32
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*/
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/*@{*/
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/*******************************************************************************
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* Function Name : RCC_Configuration
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* Description : Configures the different system clocks.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void RCC_Configuration(void)
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{
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ErrorStatus HSEStartUpStatus;
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/* RCC system reset(for debug purpose) */
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RCC_DeInit();
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/* Enable HSE */
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RCC_HSEConfig(RCC_HSE_ON);
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/* Wait till HSE is ready */
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HSEStartUpStatus = RCC_WaitForHSEStartUp();
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if(HSEStartUpStatus == SUCCESS)
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{
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/* HCLK = SYSCLK */
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RCC_HCLKConfig(RCC_SYSCLK_Div1);
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/* PCLK2 = HCLK */
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RCC_PCLK2Config(RCC_HCLK_Div1);
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/* PCLK1 = HCLK/2 */
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RCC_PCLK1Config(RCC_HCLK_Div2);
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/* Flash 2 wait state */
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FLASH_SetLatency(FLASH_Latency_2);
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/* Enable Prefetch Buffer */
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FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
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/* PLLCLK = 8MHz * 9 = 72 MHz */
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RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
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/* Enable PLL */
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RCC_PLLCmd(ENABLE);
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/* Wait till PLL is ready */
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while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) ;
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/* Select PLL as system clock source */
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RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
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/* Wait till PLL is used as system clock source */
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while(RCC_GetSYSCLKSource() != 0x08) ;
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}
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}
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/*******************************************************************************
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* Function Name : NVIC_Configuration
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* Description : Configures Vector Table base location.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void NVIC_Configuration(void)
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{
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#ifdef VECT_TAB_RAM
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/* Set the Vector Table base location at 0x20000000 */
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NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
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#else /* VECT_TAB_FLASH */
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/* Set the Vector Table base location at 0x08000000 */
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NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
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#endif
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}
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/*******************************************************************************
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* Function Name : SysTick_Configuration
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* Description : Configures the SysTick for OS tick.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void SysTick_Configuration(void)
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{
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RCC_ClocksTypeDef rcc_clocks;
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rt_uint32_t cnts;
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RCC_GetClocksFreq(&rcc_clocks);
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cnts = (rt_uint32_t)rcc_clocks.HCLK_Frequency / RT_TICK_PER_SECOND;
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SysTick_SetReload(cnts);
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SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
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SysTick_CounterCmd(SysTick_Counter_Enable);
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SysTick_ITConfig(ENABLE);
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}
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extern void rt_hw_interrupt_thread_switch(void);
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/**
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* This is the timer interrupt service routine.
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*
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*/
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void rt_hw_timer_handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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rt_hw_interrupt_thread_switch();
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}
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/*******************************************************************************
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* Function Name : LCD_CtrlLinesConfig
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* Description : Configures LCD Control lines (FSMC Pins) in alternate function
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Push-Pull mode.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void LCD_CtrlLinesConfig(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable FSMC, GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE |
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RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG |
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RCC_APB2Periph_AFIO, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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// GPIO_Init(GPIOA, &GPIO_InitStructure);
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// GPIO_ResetBits(GPIOA, GPIO_Pin_8);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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GPIO_SetBits(GPIOC, GPIO_Pin_6);
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/* Set PD.00(D2), PD.01(D3), PD.04(NOE), PD.05(NWE), PD.08(D13), PD.09(D14),
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PD.10(D15), PD.14(D0), PD.15(D1) as alternate
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function push pull */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 |
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GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_14 |
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GPIO_Pin_15;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_Init(GPIOD, &GPIO_InitStructure);
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/* Set PE.07(D4), PE.08(D5), PE.09(D6), PE.10(D7), PE.11(D8), PE.12(D9), PE.13(D10),
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PE.14(D11), PE.15(D12) as alternate function push pull */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 |
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GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 |
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GPIO_Pin_15;
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GPIO_Init(GPIOE, &GPIO_InitStructure);
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// GPIO_WriteBit(GPIOE, GPIO_Pin_6, Bit_SET);
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/* Set PF.00(A0 (RS)) as alternate function push pull */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
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GPIO_Init(GPIOF, &GPIO_InitStructure);
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/* Set PG.12(NE4 (LCD/CS)) as alternate function push pull - CE3(LCD /CS) */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
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GPIO_Init(GPIOG, &GPIO_InitStructure);
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}
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/*******************************************************************************
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* Function Name : LCD_FSMCConfig
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* Description : Configures the Parallel interface (FSMC) for LCD(Parallel mode)
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void LCD_FSMCConfig(void)
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{
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FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
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FSMC_NORSRAMTimingInitTypeDef p;
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/*-- FSMC Configuration ------------------------------------------------------*/
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/*----------------------- SRAM Bank 4 ----------------------------------------*/
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/* FSMC_Bank1_NORSRAM4 configuration */
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p.FSMC_AddressSetupTime = 0;
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p.FSMC_AddressHoldTime = 0;
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p.FSMC_DataSetupTime = 2;
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p.FSMC_BusTurnAroundDuration = 0;
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p.FSMC_CLKDivision = 0;
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p.FSMC_DataLatency = 0;
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p.FSMC_AccessMode = FSMC_AccessMode_A;
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/* Color LCD configuration ------------------------------------
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LCD configured as follow:
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- Data/Address MUX = Disable
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- Memory Type = SRAM
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- Data Width = 16bit
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- Write Operation = Enable
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- Extended Mode = Enable
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- Asynchronous Wait = Disable */
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FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
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FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
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FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
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FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
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FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
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FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
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FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
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FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
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FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
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FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
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FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
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// FSMC_NORSRAMInitStructure.FSMC_AsyncWait = FSMC_AsyncWait_Disable;
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FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
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FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
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FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;
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FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
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/* BANK 4 (of NOR/SRAM Bank 1~4) is enabled */
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FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
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}
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/*******************************************************************************
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* Function Name : FSMC_SRAM_Init
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* Description : Configures the FSMC and GPIOs to interface with the SRAM memory.
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* This function must be called before any write/read operation
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* on the SRAM.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void FSMC_SRAM_Init(void)
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{
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#define REG32(x) (*(volatile unsigned long*)(x))
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/* enable FSMC clock */
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REG32(0x40021014) = 0x114;
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/* enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
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REG32(0x40021018) = 0x1e0;
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/* SRAM Data lines, NOE and NWE configuration */
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REG32(0x40011400) = 0x44BB44BB;
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REG32(0x40011404) = 0xBBBBBBBB;
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REG32(0x40011800) = 0xB44444BB;
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REG32(0x40011804) = 0xBBBBBBBB;
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REG32(0x40011C00) = 0x44BBBBBB;
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REG32(0x40011C04) = 0xBBBB4444;
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REG32(0x40012000) = 0x44BBBBBB;
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REG32(0x40012004) = 0x44444B44;
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/* FSMC Configuration (enable FSMC Bank1_SRAM Bank) */
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REG32(0xA0000010) = 0x00001011;
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REG32(0xA0000014) = 0x00000200;
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LCD_CtrlLinesConfig();
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LCD_FSMCConfig();
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}
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/**
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* This function will initial STM32 board.
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*/
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void rt_hw_board_init()
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{
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/* Configure the system clocks */
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RCC_Configuration();
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/* NVIC Configuration */
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NVIC_Configuration();
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/* SRAM init */
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FSMC_SRAM_Init();
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/* Configure the SysTick */
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SysTick_Configuration();
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rt_hw_console_init();
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}
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/* init console to support rt_kprintf */
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static void rt_hw_console_init()
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{
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/* Enable USART1 and GPIOA clocks */
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
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/* GPIO configuration */
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Configure USART1 Tx (PA.09) as alternate function push-pull */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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/* Configure USART1 Rx (PA.10) as input floating */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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}
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/* USART configuration */
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{
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USART_InitTypeDef USART_InitStructure;
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/* USART1 configured as follow:
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- BaudRate = 115200 baud
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- Word Length = 8 Bits
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- One Stop Bit
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- No parity
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- Hardware flow control disabled (RTS and CTS signals)
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- Receive and transmit enabled
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- USART Clock disabled
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- USART CPOL: Clock is active low
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- USART CPHA: Data is captured on the middle
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- USART LastBit: The clock pulse of the last data bit is not output to
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the SCLK pin
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*/
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USART_InitStructure.USART_BaudRate = 115200;
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USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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USART_InitStructure.USART_StopBits = USART_StopBits_1;
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USART_InitStructure.USART_Parity = USART_Parity_No;
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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USART_Init(USART1, &USART_InitStructure);
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/* Enable USART1 */
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USART_Cmd(USART1, ENABLE);
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}
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}
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/* write one character to serial, must not trigger interrupt */
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static void rt_hw_console_putc(const char c)
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{
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/*
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to be polite with serial console add a line feed
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to the carriage return character
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*/
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if (c=='\n')rt_hw_console_putc('\r');
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while (!(USART1->SR & USART_FLAG_TXE));
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USART1->DR = (c & 0x1FF);
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}
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/**
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* This function is used by rt_kprintf to display a string on console.
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*
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* @param str the displayed string
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*/
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void rt_hw_console_output(const char* str)
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{
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while (*str)
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{
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rt_hw_console_putc (*str++);
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}
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}
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/*@}*/
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