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/I2C_RAM/main.c | 305 +++++++++++++++++++++++++++++++ 1 file changed, 305 insertions(+) create mode 100755 src/stm32lib/examples/DMA/I2C_RAM/main.c (limited to 'src/stm32lib/examples/DMA/I2C_RAM/main.c') diff --git a/src/stm32lib/examples/DMA/I2C_RAM/main.c b/src/stm32lib/examples/DMA/I2C_RAM/main.c new file mode 100755 index 0000000..5ef5d04 --- /dev/null +++ b/src/stm32lib/examples/DMA/I2C_RAM/main.c @@ -0,0 +1,305 @@ +/******************** (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 I2C1_DR_Address 0x40005410 +#define I2C2_DR_Address 0x40005810 +#define I2C1_SLAVE_ADDRESS7 0x30 +#define I2C2_SLAVE_ADDRESS7 0x30 +#define BufferSize 8 +#define ClockSpeed 100000 + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +I2C_InitTypeDef I2C_InitStructure; +DMA_InitTypeDef DMA_InitStructure; +u8 I2C1_Buffer_Tx[BufferSize] = {1, 2, 3, 4, 5, 6, 7, 8}; +u8 I2C2_Buffer_Rx[BufferSize]; +u8 Tx_Idx = 0, Rx_Idx = 0; +volatile TestStatus TransferStatus; +ErrorStatus HSEStartUpStatus; + +/* Private function prototypes -----------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(void); +void NVIC_Configuration(void); +TestStatus Buffercmp(u8* pBuffer, u8* 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(); + + /* Configure the GPIO ports */ + GPIO_Configuration(); + + /* DMA1 channel5 configuration ----------------------------------------------*/ + DMA_DeInit(DMA1_Channel5); + DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)I2C2_DR_Address; + DMA_InitStructure.DMA_MemoryBaseAddr = (u32)I2C2_Buffer_Rx; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; + DMA_InitStructure.DMA_BufferSize = BufferSize; + DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; + DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; + DMA_InitStructure.DMA_PeripheralDataSize = DMA_MemoryDataSize_Byte; + DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; + DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; + DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh; + DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; + DMA_Init(DMA1_Channel5, &DMA_InitStructure); + + /* DMA1 channel6 configuration ----------------------------------------------*/ + DMA_DeInit(DMA1_Channel6); + DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)I2C1_DR_Address; + DMA_InitStructure.DMA_MemoryBaseAddr = (u32)I2C1_Buffer_Tx; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; + DMA_InitStructure.DMA_Priority = DMA_Priority_High; + DMA_Init(DMA1_Channel6, &DMA_InitStructure); + + /* Enable I2C1 and I2C2 ----------------------------------------------------*/ + I2C_Cmd(I2C1, ENABLE); + I2C_Cmd(I2C2, ENABLE); + + /* I2C1 configuration ------------------------------------------------------*/ + I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; + I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2; + I2C_InitStructure.I2C_OwnAddress1 = I2C1_SLAVE_ADDRESS7; + I2C_InitStructure.I2C_Ack = I2C_Ack_Enable; + I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; + I2C_InitStructure.I2C_ClockSpeed = ClockSpeed; + I2C_Init(I2C1, &I2C_InitStructure); + /* I2C2 configuration ------------------------------------------------------*/ + I2C_InitStructure.I2C_OwnAddress1 = I2C2_SLAVE_ADDRESS7; + I2C_Init(I2C2, &I2C_InitStructure); + + /*----- Transmission Phase -----*/ + /* Send I2C1 START condition */ + I2C_GenerateSTART(I2C1, ENABLE); + /* Test on I2C1 EV5 and clear it */ + while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)); + /* Send I2C2 slave Address for write */ + I2C_Send7bitAddress(I2C1, I2C2_SLAVE_ADDRESS7, I2C_Direction_Transmitter); + /* Test on I2C2 EV1 and clear it */ + while(!I2C_CheckEvent(I2C2, I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED)); + /* Test on I2C1 EV6 and clear it */ + while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); + + /* Enable I2C2 DMA */ + I2C_DMACmd(I2C2, ENABLE); + /* Enable I2C1 DMA */ + I2C_DMACmd(I2C1, ENABLE); + + /* Enable DMA1 Channel5 */ + DMA_Cmd(DMA1_Channel5, ENABLE); + /* Enable DMA1 Channel6 */ + DMA_Cmd(DMA1_Channel6, ENABLE); + + /* DMA1 Channel5 transfer complete test */ + while(!DMA_GetFlagStatus(DMA1_FLAG_TC5)); + /* DMA1 Channel6 transfer complete test */ + while(!DMA_GetFlagStatus(DMA1_FLAG_TC6)); + + /* Send I2C1 STOP Condition */ + I2C_GenerateSTOP(I2C1, ENABLE); + /* Test on I2C2 EV4 */ + while(!I2C_CheckEvent(I2C2, I2C_EVENT_SLAVE_STOP_DETECTED)); + /* Clear I2C2 STOPF flag */ + I2C_ClearFlag(I2C2, I2C_FLAG_STOPF); + + /* Check if the transmitted and received data are equal */ + TransferStatus = Buffercmp(I2C1_Buffer_Tx, I2C2_Buffer_Rx, 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 DMA1 clock */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); + /* Enable GPIOB clock */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); + /* Enable I2C1 and I2C2 clock */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1 | RCC_APB1Periph_I2C2, ENABLE); +} + +/******************************************************************************* +* Function Name : GPIO_Configuration +* Description : Configures the different GPIO ports. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Configure I2C1 pins: SCL and SDA */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; + GPIO_Init(GPIOB, &GPIO_InitStructure); + + /* Configure I2C2 pins: SCL and SDA */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11; + GPIO_Init(GPIOB, &GPIO_InitStructure); +} + +/******************************************************************************* +* 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 : 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(u8* pBuffer, u8* 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