These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: I2C/pca8581_polling/pca8581_test.c
- Revision:
- 0:bf7b9fba3924
diff -r 000000000000 -r bf7b9fba3924 I2C/pca8581_polling/pca8581_test.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/I2C/pca8581_polling/pca8581_test.c Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,291 @@ +/***********************************************************************//** + * @file pca8581_test.c + * @purpose An example of I2C using polling mode to test the I2C driver. + * Using EEPROM PCA8581 to transfer a number of data byte. + * @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_pca8581_polling pca8581_polling + * @ingroup I2C_Examples + * @{ + */ + +/************************** PRIVATE DEFINITIONS *************************/ +/** Used I2C device definition, should be 0 or 2 */ +#define USEDI2CDEV 0 + +/* Definition of internal register of EEPROM PCA8581 */ +/* 7 bit address */ +#define PCA8581_SLVADDR (0xA0>>1) + +#if (USEDI2CDEV == 0) +#define I2CDEV LPC_I2C0 +#elif (USEDI2CDEV == 2) +#define I2CDEV LPC_I2C2 +#else +#error "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 - Communicate via: UART0 - 115.2 kbps \n\r" +" An example of I2C using polling mode to test the I2C driver \n\r" +" EEPROM PCA8581 to transfer a number of data byte \n\r" +"********************************************************************************\n\r"; +uint8_t menu2[] = "Demo terminated! \n\r"; + +/* Data using for transferring to PCA8581 */ +uint8_t pca8581_wrdat[] = { + (0x01<<3), // Memory Address, data will be written at this address + // This internal memory address should be 8-byte alignment + 0x00, // Data 0 + 0x11, // Data 1 + 0x22, // Data 2 + 0x33, // Data 3 + 0x44, // Data 4 + 0x55, // Data 5 + 0x66, // Data 6 + 0x77, // Data 7 +}; + +uint8_t pca8581_rddat[] = { + // Don't use Memory address here, the Memory address to read + // is the same as Memory Address to write. + 0x00, // Data 0 + 0x00, // Data 1 + 0x00, // Data 2 + 0x00, // Data 3 + 0x00, // Data 4 + 0x00, // Data 5 + 0x00, // Data 6 + 0x00, // Data 7 +}; + +/* Transmit setup */ +I2C_M_SETUP_Type txsetup; +/* Receive setup */ +I2C_M_SETUP_Type rxsetup; + +/************************** PRIVATE FUNCTIONS *************************/ +int32_t PCA8581_Write(void); +int32_t PCA8581_Read(void); +void print_menu(void); +void Error_Loop(uint32_t ErrorCode); + +/*-------------------------PRIVATE FUNCTIONS------------------------------*/ +/*********************************************************************//** + * @brief Write a number of data byte into EEPROM PCA8581 + * @param[in] None + * @return 0: if success, otherwise (-1) returned. + **********************************************************************/ +int32_t PCA8581_Write(void) +{ + txsetup.sl_addr7bit = PCA8581_SLVADDR; + txsetup.tx_data = pca8581_wrdat; + txsetup.tx_length = sizeof(pca8581_wrdat); + txsetup.rx_data = NULL; + txsetup.rx_length = 0; + txsetup.retransmissions_max = 3; + + if (I2C_MasterTransferData(I2CDEV, &txsetup, I2C_TRANSFER_POLLING) == SUCCESS){ + return (0); + } else { + return (-1); + } +} + +/*********************************************************************//** + * @brief Read a number of data byte from EEPROM PCA8581 + * @param[in] None + * @return 0: if success, otherwise (-1) returned. + **********************************************************************/ +int32_t PCA8581_Read(void) +{ + + rxsetup.sl_addr7bit = PCA8581_SLVADDR; + rxsetup.tx_data = pca8581_wrdat; // Get address to read at writing address + rxsetup.tx_length = 1; + rxsetup.rx_data = pca8581_rddat; + rxsetup.rx_length = sizeof(pca8581_rddat); + rxsetup.retransmissions_max = 3; + + if (I2C_MasterTransferData(I2CDEV, &rxsetup, I2C_TRANSFER_POLLING) == SUCCESS){ + return (0); + } else { + return (-1); + } +} + +/*********************************************************************//** + * @brief Print Welcome menu + * @param[in] none + * @return None + **********************************************************************/ +void print_menu(void) +{ + _DBG_(menu1); +} + +/*********************************************************************//** + * @brief A subroutine that will be called if there's any error + * on I2C operation + * @param[in] ErrorCode Error Code Input + * @return None + **********************************************************************/ +void Error_Loop(uint32_t ErrorCode) +{ + uint32_t test; + // for testing purpose + test = ErrorCode; + /* + * Insert your code here... + */ + while(1); +} + + +/*-------------------------MAIN FUNCTION------------------------------*/ +/*********************************************************************//** + * @brief c_entry: Main program body + * @param[in] None + * @return int + **********************************************************************/ +int c_entry(void) +{ + PINSEL_CFG_Type PinCfg; + uint32_t tmp; + uint8_t *dp, *sp; + + /* Initialize debug via UART0 + * 115200bps + * 8 data bit + * No parity + * 1 stop bit + * No flow control + */ + debug_frmwrk_init(); + + // print welcome screen + print_menu(); + + /* + * Init I2C pin connect + */ + PinCfg.OpenDrain = 0; + PinCfg.Pinmode = 0; +#if (USEDI2CDEV == 0) + PinCfg.Funcnum = 1; + PinCfg.Pinnum = 27; + PinCfg.Portnum = 0; + PINSEL_ConfigPin(&PinCfg); + PinCfg.Pinnum = 28; + PINSEL_ConfigPin(&PinCfg); +#elif (USEDI2CDEV == 2) + PinCfg.Funcnum = 2; + PinCfg.Pinnum = 10; + PinCfg.Portnum = 0; + PINSEL_ConfigPin(&PinCfg); + PinCfg.Pinnum = 11; + PINSEL_ConfigPin(&PinCfg); +#endif + + /* I2C block ------------------------------------------------------------------- */ + // Initialize I2C peripheral + I2C_Init(I2CDEV, 200000); + + /* Enable I2C1 operation */ + I2C_Cmd(I2CDEV, ENABLE); + + /* Transmit data ---------------------------------------------------------- */ + _DBG_("Sending..."); + if (PCA8581_Write() == (-1)){ + _DBG_("Error while sending data"); + Error_Loop(txsetup.status); + } + _DBG_("Complete!"); + + // wait for a while + for (tmp = 0x100000; tmp; tmp--); + + /* Receive data ---------------------------------------------------------- */ + _DBG_("Reading..."); + if (PCA8581_Read() == (-1)){ + _DBG_("Error while reading data"); + Error_Loop(rxsetup.status); + } + _DBG_("Complete!"); + + // Verify data + dp = pca8581_rddat; + sp = pca8581_wrdat; + sp += 1; // Offset +1 + for (tmp = sizeof(pca8581_rddat); tmp; tmp--){ + if (*dp++ != *sp++){ + _DBG_("Verify Data error!"); + break; + } + } + + tmp++; + + /* 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 + +/* + * @} + */