From 32e57dac2e61e79b029593eb4d34d727bcc10678 Mon Sep 17 00:00:00 2001 From: iperry Date: Thu, 17 Dec 2009 02:37:07 +0000 Subject: Initial commit of library code, moved from leaftest repo git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123 --- src/stm32lib/examples/DMA/FLASH_RAM/main.c | 241 +++++++++++++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100755 src/stm32lib/examples/DMA/FLASH_RAM/main.c (limited to 'src/stm32lib/examples/DMA/FLASH_RAM/main.c') diff --git a/src/stm32lib/examples/DMA/FLASH_RAM/main.c b/src/stm32lib/examples/DMA/FLASH_RAM/main.c new file mode 100755 index 0000000..7fd0a60 --- /dev/null +++ b/src/stm32lib/examples/DMA/FLASH_RAM/main.c @@ -0,0 +1,241 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** +* File Name : main.c +* Author : MCD Application Team +* Version : V2.0.1 +* Date : 06/13/2008 +* Description : Main program body +******************************************************************************** +* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS +* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. +* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, +* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE +* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING +* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. +*******************************************************************************/ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x_lib.h" + +/* Private typedef -----------------------------------------------------------*/ +typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; + +/* Private define ------------------------------------------------------------*/ +#define BufferSize 32 + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +DMA_InitTypeDef DMA_InitStructure; +vu16 CurrDataCounterBegin = 0, CurrDataCounterEnd = 0; +volatile TestStatus TransferStatus = FAILED; +ErrorStatus HSEStartUpStatus; +uc32 SRC_Const_Buffer[BufferSize]= {0x01020304,0x05060708,0x090A0B0C,0x0D0E0F10, + 0x11121314,0x15161718,0x191A1B1C,0x1D1E1F20, + 0x21222324,0x25262728,0x292A2B2C,0x2D2E2F30, + 0x31323334,0x35363738,0x393A3B3C,0x3D3E3F40, + 0x41424344,0x45464748,0x494A4B4C,0x4D4E4F50, + 0x51525354,0x55565758,0x595A5B5C,0x5D5E5F60, + 0x61626364,0x65666768,0x696A6B6C,0x6D6E6F70, + 0x71727374,0x75767778,0x797A7B7C,0x7D7E7F80}; +u32 DST_Buffer[BufferSize]; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void NVIC_Configuration(void); +TestStatus Buffercmp(uc32* pBuffer, u32* pBuffer1, u16 BufferLength); + +/* Private functions ---------------------------------------------------------*/ + +/******************************************************************************* +* Function Name : main +* Description : Main program +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +int main(void) +{ +#ifdef DEBUG + debug(); +#endif + + /* System Clocks Configuration */ + RCC_Configuration(); + + /* NVIC configuration */ + NVIC_Configuration(); + + /* DMA1 channel6 configuration */ + DMA_DeInit(DMA1_Channel6); + DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SRC_Const_Buffer; + DMA_InitStructure.DMA_MemoryBaseAddr = (u32)DST_Buffer; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; + DMA_InitStructure.DMA_BufferSize = BufferSize; + DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable; + DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; + DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word; + DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word; + DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; + DMA_InitStructure.DMA_Priority = DMA_Priority_High; + DMA_InitStructure.DMA_M2M = DMA_M2M_Enable; + DMA_Init(DMA1_Channel6, &DMA_InitStructure); + + /* Enable DMA1 Channel6 Transfer Complete interrupt */ + DMA_ITConfig(DMA1_Channel6, DMA_IT_TC, ENABLE); + + /* Get Current Data Counter value before transfer begins */ + CurrDataCounterBegin = DMA_GetCurrDataCounter(DMA1_Channel6); + + /* Enable DMA1 Channel6 transfer */ + DMA_Cmd(DMA1_Channel6, ENABLE); + + /* Wait the end of transmission */ + while (CurrDataCounterEnd != 0) + { + } + + /* Check if the transmitted and received data are equal */ + TransferStatus = Buffercmp(SRC_Const_Buffer, DST_Buffer, BufferSize); + /* TransferStatus = PASSED, if the transmitted and received data + are the same */ + /* TransferStatus = FAILED, if the transmitted and received data + are different */ + + while (1) + { + } +} + +/******************************************************************************* +* Function Name : RCC_Configuration +* Description : Configures the different system clocks. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void RCC_Configuration(void) +{ + /* 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) + { + /* Enable Prefetch Buffer */ + FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable); + + /* Flash 2 wait state */ + FLASH_SetLatency(FLASH_Latency_2); + + /* HCLK = SYSCLK */ + RCC_HCLKConfig(RCC_SYSCLK_Div1); + + /* PCLK2 = HCLK */ + RCC_PCLK2Config(RCC_HCLK_Div1); + + /* PCLK1 = HCLK/2 */ + RCC_PCLK1Config(RCC_HCLK_Div2); + + /* 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) + { + } + } + +/* Enable peripheral clocks --------------------------------------------------*/ + /* Enable DMA1 clock */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); +} + +/******************************************************************************* +* Function Name : NVIC_Configuration +* Description : Configure the nested vectored interrupt controller. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_Configuration(void) +{ + NVIC_InitTypeDef NVIC_InitStructure; + +#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 + + /* Enable DMA1 channel6 IRQ Channel */ + NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel6_IRQChannel; + NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); +} + +/******************************************************************************* +* Function Name : Buffercmp +* Description : Compares two buffers. +* Input : - pBuffer, pBuffer1: buffers to be compared. +* : - BufferLength: buffer's length +* Output : None +* Return : PASSED: pBuffer identical to pBuffer1 +* FAILED: pBuffer differs from pBuffer1 +*******************************************************************************/ +TestStatus Buffercmp(uc32* pBuffer, u32* pBuffer1, u16 BufferLength) +{ + while(BufferLength--) + { + if(*pBuffer != *pBuffer1) + { + return FAILED; + } + + pBuffer++; + pBuffer1++; + } + + return PASSED; +} + +#ifdef DEBUG +/******************************************************************************* +* Function Name : assert_failed +* Description : Reports the name of the source file and the source line number +* where the assert_param error has occurred. +* Input : - file: pointer to the source file name +* - line: assert_param error line source number +* Output : None +* Return : None +*******************************************************************************/ +void assert_failed(u8* file, u32 line) +{ + /* User can add his own implementation to report the file name and line number, + ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + + /* Infinite loop */ + while (1) + { + } +} +#endif +/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3