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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://openlab.rt-thread.com/license/LICENSE
- *
- * Change Logs:
- * Date Author Notes
- * 2006-08-23 Bernard first implementation
- */
- #include <rthw.h>
- #include <rtthread.h>
- #include "stm32f10x_lib.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_SetReload(cnts);
- SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
- SysTick_CounterCmd(SysTick_Counter_Enable);
- SysTick_ITConfig(ENABLE);
- }
- 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();
- rt_hw_interrupt_thread_switch();
- }
- /*******************************************************************************
- * Function Name : LCD_CtrlLinesConfig
- * Description : Configures LCD Control lines (FSMC Pins) in alternate function
- Push-Pull mode.
- * Input : None
- * Output : None
- * Return : None
- *******************************************************************************/
- void LCD_CtrlLinesConfig(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
-
- /* Enable FSMC, GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
-
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE |
- RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG |
- RCC_APB2Periph_AFIO, ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- // GPIO_Init(GPIOA, &GPIO_InitStructure);
- // GPIO_ResetBits(GPIOA, GPIO_Pin_8);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
- GPIO_Init(GPIOC, &GPIO_InitStructure);
- GPIO_SetBits(GPIOC, GPIO_Pin_6);
- /* Set PD.00(D2), PD.01(D3), PD.04(NOE), PD.05(NWE), PD.08(D13), PD.09(D14),
- PD.10(D15), PD.14(D0), PD.15(D1) as alternate
- function push pull */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 |
- GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_14 |
- GPIO_Pin_15;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOD, &GPIO_InitStructure);
- /* Set PE.07(D4), PE.08(D5), PE.09(D6), PE.10(D7), PE.11(D8), PE.12(D9), PE.13(D10),
- PE.14(D11), PE.15(D12) as alternate function push pull */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 |
- GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 |
- GPIO_Pin_15;
- GPIO_Init(GPIOE, &GPIO_InitStructure);
- // GPIO_WriteBit(GPIOE, GPIO_Pin_6, Bit_SET);
- /* Set PF.00(A0 (RS)) as alternate function push pull */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
- GPIO_Init(GPIOF, &GPIO_InitStructure);
-
- /* Set PG.12(NE4 (LCD/CS)) as alternate function push pull - CE3(LCD /CS) */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
- GPIO_Init(GPIOG, &GPIO_InitStructure);
- }
- /*******************************************************************************
- * Function Name : LCD_FSMCConfig
- * Description : Configures the Parallel interface (FSMC) for LCD(Parallel mode)
- * Input : None
- * Output : None
- * Return : None
- *******************************************************************************/
- void LCD_FSMCConfig(void)
- {
- FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
- FSMC_NORSRAMTimingInitTypeDef p;
-
- /*-- FSMC Configuration ------------------------------------------------------*/
- /*----------------------- SRAM Bank 4 ----------------------------------------*/
- /* FSMC_Bank1_NORSRAM4 configuration */
- p.FSMC_AddressSetupTime = 0;
- p.FSMC_AddressHoldTime = 0;
- p.FSMC_DataSetupTime = 2;
- p.FSMC_BusTurnAroundDuration = 0;
- p.FSMC_CLKDivision = 0;
- p.FSMC_DataLatency = 0;
- p.FSMC_AccessMode = FSMC_AccessMode_A;
-
- /* Color LCD configuration ------------------------------------
- LCD configured as follow:
- - Data/Address MUX = Disable
- - Memory Type = SRAM
- - Data Width = 16bit
- - Write Operation = Enable
- - Extended Mode = Enable
- - Asynchronous Wait = Disable */
- FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
- FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
- FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
- FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
- FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
- FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
- FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
- FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
- FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
- FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
- FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
- // FSMC_NORSRAMInitStructure.FSMC_AsyncWait = FSMC_AsyncWait_Disable;
- FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
- FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
- FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;
-
- FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
-
- /* BANK 4 (of NOR/SRAM Bank 1~4) is enabled */
- FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
- }
- /*******************************************************************************
- * Function Name : FSMC_SRAM_Init
- * Description : Configures the FSMC and GPIOs to interface with the SRAM memory.
- * This function must be called before any write/read operation
- * on the SRAM.
- * Input : None
- * Output : None
- * Return : None
- *******************************************************************************/
- void FSMC_SRAM_Init(void)
- {
- #define REG32(x) (*(volatile unsigned long*)(x))
- /* enable FSMC clock */
- REG32(0x40021014) = 0x114;
-
- /* enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
- REG32(0x40021018) = 0x1e0;
-
- /* SRAM Data lines, NOE and NWE configuration */
- REG32(0x40011400) = 0x44BB44BB;
- REG32(0x40011404) = 0xBBBBBBBB;
- REG32(0x40011800) = 0xB44444BB;
- REG32(0x40011804) = 0xBBBBBBBB;
- REG32(0x40011C00) = 0x44BBBBBB;
- REG32(0x40011C04) = 0xBBBB4444;
- REG32(0x40012000) = 0x44BBBBBB;
- REG32(0x40012004) = 0x44444B44;
-
- /* FSMC Configuration (enable FSMC Bank1_SRAM Bank) */
- REG32(0xA0000010) = 0x00001011;
- REG32(0xA0000014) = 0x00000200;
-
- LCD_CtrlLinesConfig();
- LCD_FSMCConfig();
- }
- /**
- * This function will initial STM32 board.
- */
- void rt_hw_board_init()
- {
- /* Configure the system clocks */
- RCC_Configuration();
- /* NVIC Configuration */
- NVIC_Configuration();
-
- /* SRAM init */
- FSMC_SRAM_Init();
- /* Configure the SysTick */
- SysTick_Configuration();
-
- rt_hw_console_init();
- }
- /* 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, ENABLE);
- /* GPIO configuration */
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- /* Configure USART1 Tx (PA.09) as alternate function push-pull */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- /* Configure USART1 Rx (PA.10) as input floating */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- }
- /* USART configuration */
- {
- USART_InitTypeDef USART_InitStructure;
-
- /* USART1 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(USART1, &USART_InitStructure);
- /* Enable USART1 */
- USART_Cmd(USART1, ENABLE);
- }
- }
- /* 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 (!(USART1->SR & USART_FLAG_TXE));
- USART1->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)
- {
- while (*str)
- {
- rt_hw_console_putc (*str++);
- }
- }
- /*@}*/
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