These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: I2C/master/master.c
- Revision:
- 0:bf7b9fba3924
diff -r 000000000000 -r bf7b9fba3924 I2C/master/master.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/I2C/master/master.c Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,276 @@ +/***********************************************************************//** + * @file master.c + * @purpose This example describes how to configure I2C as master device + * @version 2.0 + * @date 21. May. 2010 + * @author NXP MCU SW Application Team + *--------------------------------------------------------------------- + * Software that is described herein is for illustrative purposes only + * which provides customers with programming information regarding the + * products. This software is supplied "AS IS" without any warranties. + * NXP Semiconductors assumes no responsibility or liability for the + * use of the software, conveys no license or title under any patent, + * copyright, or mask work right to the product. NXP Semiconductors + * reserves the right to make changes in the software without + * notification. NXP Semiconductors also make no representation or + * warranty that such application will be suitable for the specified + * use without further testing or modification. + **********************************************************************/ +#include "lpc17xx_i2c.h" +#include "lpc17xx_libcfg.h" +#include "lpc17xx_pinsel.h" +#include "debug_frmwrk.h" + +/* Example group ----------------------------------------------------------- */ +/** @defgroup I2C_master master + * @ingroup I2C_Examples + * @{ + */ + +/************************** PRIVATE DEFINITIONS *************************/ +/** Used I2C device as slave definition */ +#define USEDI2CDEV_M 0 +/** Own Slave address in Slave I2C device */ +#define I2CDEV_S_ADDR (0x90>>1) + +/** Max buffer length */ +#define BUFFER_SIZE 0x10 + +#if (USEDI2CDEV_M == 0) +#define I2CDEV_M LPC_I2C0 +#elif (USEDI2CDEV_M == 2) +#define I2CDEV_M LPC_I2C2 +#else +#error "Master I2C device not defined!" +#endif + +/************************** PRIVATE VARIABLES *************************/ +uint8_t menu1[] = +"********************************************************************************\n\r" +"Hello NXP Semiconductors \n\r" +"I2C demo \n\r" +"\t - MCU: LPC17xx \n\r" +"\t - Core: ARM Cortex-M3 \n\r" +"\t - This example uses two I2C peripheral, one set as master and \n\r" +"\t the other set as slave \n\r" +"\t Test Master mode as alone device \n\r" +"********************************************************************************\n\r"; + +/** These global variables below used in interrupt mode - Slave device ----------------*/ +uint8_t Master_Buf[BUFFER_SIZE]; +uint8_t master_test[2]; + +/************************** PRIVATE FUNCTIONS *************************/ +void print_menu(void); +void Buffer_Init(uint8_t type); + +/*-------------------------PRIVATE FUNCTIONS-----------------------------*/ +/*********************************************************************//** + * @brief Print Welcome menu + * @param[in] none + * @return None + **********************************************************************/ +void print_menu(void) +{ + _DBG_(menu1); +} + +/*********************************************************************//** + * @brief Initialize buffer + * @param[in] type: + * - 0: Initialize Master_Buf with increment value from 0 + * Fill all member in Slave_Buf with 0 + * - 1: Initialize Slave_Buf with increment value from 0 + * Fill all member in Master_Buf with 0 + * @return None + **********************************************************************/ +void Buffer_Init(uint8_t type) +{ + uint8_t i; + + if (type) + { + for (i = 0; i < BUFFER_SIZE; i++) { + Master_Buf[i] = i; + } + } + else + { + for (i = 0; i < BUFFER_SIZE; i++) { + Master_Buf[i] = 0; + } + } +} + + +/*-------------------------MAIN FUNCTION------------------------------*/ +/*********************************************************************//** + * @brief c_entry: Main program body + * @param[in] None + * @return int + **********************************************************************/ +int c_entry(void) +{ + PINSEL_CFG_Type PinCfg; + I2C_M_SETUP_Type transferMCfg; + uint32_t tempp; + uint8_t *pdat; + + /* Initialize debug via UART0 + * 115200bps + * 8 data bit + * No parity + * 1 stop bit + * No flow control + */ + debug_frmwrk_init(); + + print_menu(); + + + /* I2C block ------------------------------------------------------------------- */ + + /* + * Init I2C pin connect + */ + PinCfg.OpenDrain = 0; + PinCfg.Pinmode = 0; +#if ((USEDI2CDEV_M == 0)) + PinCfg.Funcnum = 1; + PinCfg.Pinnum = 27; + PinCfg.Portnum = 0; + PINSEL_ConfigPin(&PinCfg); + PinCfg.Pinnum = 28; + PINSEL_ConfigPin(&PinCfg); +#endif +#if ((USEDI2CDEV_M == 2)) + PinCfg.Funcnum = 2; + PinCfg.Pinnum = 10; + PinCfg.Portnum = 0; + PINSEL_ConfigPin(&PinCfg); + PinCfg.Pinnum = 11; + PINSEL_ConfigPin(&PinCfg); +#endif + + // Initialize Slave I2C peripheral + I2C_Init(I2CDEV_M, 100000); + + /* Enable Slave I2C operation */ + I2C_Cmd(I2CDEV_M, ENABLE); + + /* Transmit -------------------------------------------------------- */ + _DBG_("Press '1' to transmit"); + while (_DG != '1'); + _DBG_("Start Transmit..."); + + /* Initialize buffer */ + Buffer_Init(1); + + /* Start I2C slave device first */ + transferMCfg.sl_addr7bit = I2CDEV_S_ADDR; + transferMCfg.tx_data = Master_Buf; + transferMCfg.tx_length = sizeof(Master_Buf); + transferMCfg.rx_data = NULL; + transferMCfg.rx_length = 0; + transferMCfg.retransmissions_max = 3; + I2C_MasterTransferData(I2CDEV_M, &transferMCfg, I2C_TRANSFER_POLLING); + + + /* Receive -------------------------------------------------------- */ + _DBG_("Press '2' to receive"); + while(_DG != '2'); + _DBG_("Receive..."); + + /* Initialize buffer */ + Buffer_Init(0); + + /* Start I2C slave device first */ + transferMCfg.sl_addr7bit = I2CDEV_S_ADDR; + transferMCfg.tx_data = NULL ; + transferMCfg.tx_length = 0; + transferMCfg.rx_data = Master_Buf; + transferMCfg.rx_length = sizeof(Master_Buf); + transferMCfg.retransmissions_max = 3; + I2C_MasterTransferData(I2CDEV_M, &transferMCfg, I2C_TRANSFER_POLLING); + + pdat = Master_Buf; + // Verify + for (tempp = 0; tempp < sizeof(Master_Buf); tempp++){ + if (*pdat++ != tempp){ + _DBG_("Verify error"); + break; + } + } + if (tempp == sizeof(Master_Buf)){ + _DBG_("Verify successfully"); + } + +#if 1 + /* Transmit and receive -------------------------------------------------------- */ + _DBG_("Press '3' to Transmit, then repeat start and receive..."); + while (_DG != '3'); + + /* Initialize buffer */ + Buffer_Init(0); + master_test[0] = 0xAA; + master_test[1] = 0x55; + + /* Start I2C slave device first */ + transferMCfg.sl_addr7bit = I2CDEV_S_ADDR; + transferMCfg.tx_data = master_test ; + transferMCfg.tx_length = sizeof(master_test); + transferMCfg.rx_data = Master_Buf; + transferMCfg.rx_length = sizeof(Master_Buf); + transferMCfg.retransmissions_max = 3; + I2C_MasterTransferData(I2CDEV_M, &transferMCfg, I2C_TRANSFER_POLLING); +#endif + + pdat = Master_Buf; + // Verify + for (tempp = 0; tempp < sizeof(Master_Buf); tempp++){ + if (*pdat++ != tempp){ + _DBG_("Verify error"); + break; + } + } + if (tempp == sizeof(Master_Buf)){ + _DBG_("Verify successfully"); + } + I2C_DeInit(I2CDEV_M); + /* Loop forever */ + while(1); + return 1; +} + +/* With ARM and GHS toolsets, the entry point is main() - this will + allow the linker to generate wrapper code to setup stacks, allocate + heap area, and initialize and copy code and data segments. For GNU + toolsets, the entry point is through __start() in the crt0_gnu.asm + file, and that startup code will setup stacks and data */ +int main(void) +{ + return c_entry(); +} + + +#ifdef DEBUG +/******************************************************************************* +* @brief Reports the name of the source file and the source line number +* where the CHECK_PARAM error has occurred. +* @param[in] file Pointer to the source file name +* @param[in] line assert_param error line source number +* @return None +*******************************************************************************/ +void check_failed(uint8_t *file, uint32_t 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 + +/* + * @} + */