LPC1700CMSIS_Examples - These are the examples provided for [[/users/fran…

Users » frank26080115 » Code » LPC1700CMSIS_Examples

These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!

I2C/slave/slave.c@0:bf7b9fba3924, 2011-03-20 (annotated)

Committer:: frank26080115
Date:: Sun Mar 20 05:38:56 2011 +0000
Revision:: 0:bf7b9fba3924

Who changed what in which revision?

User	Revision	Line number	New contents of line
frank26080115	0:bf7b9fba3924	1	/*********************************************************************//
frank26080115	0:bf7b9fba3924	2	* @file i2c_polling_test.c
frank26080115	0:bf7b9fba3924	3	* @purpose This example describes how to use I2C peripheral as a slave
frank26080115	0:bf7b9fba3924	4	* @version 2.0
frank26080115	0:bf7b9fba3924	5	* @date 21. May. 2010
frank26080115	0:bf7b9fba3924	6	* @author NXP MCU SW Application Team
frank26080115	0:bf7b9fba3924	7	*---------------------------------------------------------------------
frank26080115	0:bf7b9fba3924	8	* Software that is described herein is for illustrative purposes only
frank26080115	0:bf7b9fba3924	9	* which provides customers with programming information regarding the
frank26080115	0:bf7b9fba3924	10	* products. This software is supplied "AS IS" without any warranties.
frank26080115	0:bf7b9fba3924	11	* NXP Semiconductors assumes no responsibility or liability for the
frank26080115	0:bf7b9fba3924	12	* use of the software, conveys no license or title under any patent,
frank26080115	0:bf7b9fba3924	13	* copyright, or mask work right to the product. NXP Semiconductors
frank26080115	0:bf7b9fba3924	14	* reserves the right to make changes in the software without
frank26080115	0:bf7b9fba3924	15	* notification. NXP Semiconductors also make no representation or
frank26080115	0:bf7b9fba3924	16	* warranty that such application will be suitable for the specified
frank26080115	0:bf7b9fba3924	17	* use without further testing or modification.
frank26080115	0:bf7b9fba3924	18	**********************************************************************/
frank26080115	0:bf7b9fba3924	19	#include "lpc17xx_i2c.h"
frank26080115	0:bf7b9fba3924	20	#include "lpc17xx_libcfg.h"
frank26080115	0:bf7b9fba3924	21	#include "lpc17xx_pinsel.h"
frank26080115	0:bf7b9fba3924	22	#include "debug_frmwrk.h"
frank26080115	0:bf7b9fba3924	23
frank26080115	0:bf7b9fba3924	24	/* Example group ----------------------------------------------------------- */
frank26080115	0:bf7b9fba3924	25	/** @defgroup I2C_slave slave
frank26080115	0:bf7b9fba3924	26	* @ingroup I2C_Examples
frank26080115	0:bf7b9fba3924	27	* @{
frank26080115	0:bf7b9fba3924	28	*/
frank26080115	0:bf7b9fba3924	29
frank26080115	0:bf7b9fba3924	30	/************************ PRIVATE DEFINITIONS ***********************/
frank26080115	0:bf7b9fba3924	31	/** Used I2C device as slave definition */
frank26080115	0:bf7b9fba3924	32	#define USEDI2CDEV_S 0
frank26080115	0:bf7b9fba3924	33	/** Own Slave address in Slave I2C device */
frank26080115	0:bf7b9fba3924	34	#define I2CDEV_S_OWN_ADDR (0x90>>1)
frank26080115	0:bf7b9fba3924	35
frank26080115	0:bf7b9fba3924	36	/** Max buffer length */
frank26080115	0:bf7b9fba3924	37	#define BUFFER_SIZE 0x10
frank26080115	0:bf7b9fba3924	38
frank26080115	0:bf7b9fba3924	39	#if (USEDI2CDEV_S == 0)
frank26080115	0:bf7b9fba3924	40	#define I2CDEV_S LPC_I2C0
frank26080115	0:bf7b9fba3924	41	#elif (USEDI2CDEV_S == 2)
frank26080115	0:bf7b9fba3924	42	#define I2CDEV_S LPC_I2C2
frank26080115	0:bf7b9fba3924	43	#else
frank26080115	0:bf7b9fba3924	44	#error "Slave I2C device not defined!"
frank26080115	0:bf7b9fba3924	45	#endif
frank26080115	0:bf7b9fba3924	46
frank26080115	0:bf7b9fba3924	47	/************************ PRIVATE VARIABLES ***********************/
frank26080115	0:bf7b9fba3924	48	uint8_t menu1[] =
frank26080115	0:bf7b9fba3924	49	"********************************************************************************\n\r"
frank26080115	0:bf7b9fba3924	50	"Hello NXP Semiconductors \n\r"
frank26080115	0:bf7b9fba3924	51	"I2C demo \n\r"
frank26080115	0:bf7b9fba3924	52	"\t - MCU: LPC17xx \n\r"
frank26080115	0:bf7b9fba3924	53	"\t - Core: ARM Cortex-M3 \n\r"
frank26080115	0:bf7b9fba3924	54	"\t - This example uses I2C as slave device to transfer data \n\r"
frank26080115	0:bf7b9fba3924	55	" to/from I2C master device \n\r"
frank26080115	0:bf7b9fba3924	56	"********************************************************************************\n\r";
frank26080115	0:bf7b9fba3924	57
frank26080115	0:bf7b9fba3924	58	/** These global variables below used in interrupt mode - Slave device -----------*/
frank26080115	0:bf7b9fba3924	59	uint8_t Slave_Buf[BUFFER_SIZE];
frank26080115	0:bf7b9fba3924	60	uint8_t slave_test[2];
frank26080115	0:bf7b9fba3924	61
frank26080115	0:bf7b9fba3924	62	/************************ PRIVATE FUNCTIONS ***********************/
frank26080115	0:bf7b9fba3924	63	void print_menu(void);
frank26080115	0:bf7b9fba3924	64	void Buffer_Init(uint8_t type);
frank26080115	0:bf7b9fba3924	65
frank26080115	0:bf7b9fba3924	66	/-------------------------PRIVATE FUNCTIONS------------------------------/
frank26080115	0:bf7b9fba3924	67	/*******************************************************************//
frank26080115	0:bf7b9fba3924	68	* @brief Print Welcome menu
frank26080115	0:bf7b9fba3924	69	* @param[in] none
frank26080115	0:bf7b9fba3924	70	* @return None
frank26080115	0:bf7b9fba3924	71	**********************************************************************/
frank26080115	0:bf7b9fba3924	72	void print_menu(void)
frank26080115	0:bf7b9fba3924	73	{
frank26080115	0:bf7b9fba3924	74	_DBG_(menu1);
frank26080115	0:bf7b9fba3924	75	}
frank26080115	0:bf7b9fba3924	76
frank26080115	0:bf7b9fba3924	77	/*******************************************************************//
frank26080115	0:bf7b9fba3924	78	* @brief Initialize buffer
frank26080115	0:bf7b9fba3924	79	* @param[in] type:
frank26080115	0:bf7b9fba3924	80	* - 0: Initialize Master_Buf with increment value from 0
frank26080115	0:bf7b9fba3924	81	* Fill all member in Slave_Buf with 0
frank26080115	0:bf7b9fba3924	82	* - 1: Initialize Slave_Buf with increment value from 0
frank26080115	0:bf7b9fba3924	83	* Fill all member in Master_Buf with 0
frank26080115	0:bf7b9fba3924	84	*
frank26080115	0:bf7b9fba3924	85	* @return None
frank26080115	0:bf7b9fba3924	86	**********************************************************************/
frank26080115	0:bf7b9fba3924	87	void Buffer_Init(uint8_t type)
frank26080115	0:bf7b9fba3924	88	{
frank26080115	0:bf7b9fba3924	89	uint8_t i;
frank26080115	0:bf7b9fba3924	90
frank26080115	0:bf7b9fba3924	91	if (type)
frank26080115	0:bf7b9fba3924	92	{
frank26080115	0:bf7b9fba3924	93	for (i = 0; i < BUFFER_SIZE; i++) {
frank26080115	0:bf7b9fba3924	94	Slave_Buf[i] = i;
frank26080115	0:bf7b9fba3924	95	}
frank26080115	0:bf7b9fba3924	96	}
frank26080115	0:bf7b9fba3924	97	else
frank26080115	0:bf7b9fba3924	98	{
frank26080115	0:bf7b9fba3924	99	for (i = 0; i < BUFFER_SIZE; i++) {
frank26080115	0:bf7b9fba3924	100	Slave_Buf[i] = 0;
frank26080115	0:bf7b9fba3924	101	}
frank26080115	0:bf7b9fba3924	102	}
frank26080115	0:bf7b9fba3924	103	}
frank26080115	0:bf7b9fba3924	104
frank26080115	0:bf7b9fba3924	105
frank26080115	0:bf7b9fba3924	106	/-------------------------MAIN FUNCTION------------------------------/
frank26080115	0:bf7b9fba3924	107	/*******************************************************************//
frank26080115	0:bf7b9fba3924	108	* @brief c_entry: Main program body
frank26080115	0:bf7b9fba3924	109	* @param[in] None
frank26080115	0:bf7b9fba3924	110	* @return int
frank26080115	0:bf7b9fba3924	111	**********************************************************************/
frank26080115	0:bf7b9fba3924	112	int c_entry(void)
frank26080115	0:bf7b9fba3924	113	{
frank26080115	0:bf7b9fba3924	114	PINSEL_CFG_Type PinCfg;
frank26080115	0:bf7b9fba3924	115	I2C_OWNSLAVEADDR_CFG_Type OwnSlavAdr;
frank26080115	0:bf7b9fba3924	116	I2C_S_SETUP_Type transferSCfg;
frank26080115	0:bf7b9fba3924	117	uint32_t tempp;
frank26080115	0:bf7b9fba3924	118	uint8_t *pdat;
frank26080115	0:bf7b9fba3924	119
frank26080115	0:bf7b9fba3924	120	/* Initialize debug via UART0
frank26080115	0:bf7b9fba3924	121	* 115200bps
frank26080115	0:bf7b9fba3924	122	* 8 data bit
frank26080115	0:bf7b9fba3924	123	* No parity
frank26080115	0:bf7b9fba3924	124	* 1 stop bit
frank26080115	0:bf7b9fba3924	125	* No flow control
frank26080115	0:bf7b9fba3924	126	*/
frank26080115	0:bf7b9fba3924	127	debug_frmwrk_init();
frank26080115	0:bf7b9fba3924	128
frank26080115	0:bf7b9fba3924	129	print_menu();
frank26080115	0:bf7b9fba3924	130
frank26080115	0:bf7b9fba3924	131	/* I2C block ------------------------------------------------------------------- */
frank26080115	0:bf7b9fba3924	132
frank26080115	0:bf7b9fba3924	133	/*
frank26080115	0:bf7b9fba3924	134	* Init I2C pin connect
frank26080115	0:bf7b9fba3924	135	*/
frank26080115	0:bf7b9fba3924	136	PinCfg.OpenDrain = 0;
frank26080115	0:bf7b9fba3924	137	PinCfg.Pinmode = 0;
frank26080115	0:bf7b9fba3924	138	#if ((USEDI2CDEV_S == 0))
frank26080115	0:bf7b9fba3924	139	PinCfg.Funcnum = 1;
frank26080115	0:bf7b9fba3924	140	PinCfg.Pinnum = 27;
frank26080115	0:bf7b9fba3924	141	PinCfg.Portnum = 0;
frank26080115	0:bf7b9fba3924	142	PINSEL_ConfigPin(&PinCfg);
frank26080115	0:bf7b9fba3924	143	PinCfg.Pinnum = 28;
frank26080115	0:bf7b9fba3924	144	PINSEL_ConfigPin(&PinCfg);
frank26080115	0:bf7b9fba3924	145	#endif
frank26080115	0:bf7b9fba3924	146	#if ((USEDI2CDEV_S == 2))
frank26080115	0:bf7b9fba3924	147	PinCfg.Funcnum = 2;
frank26080115	0:bf7b9fba3924	148	PinCfg.Pinnum = 10;
frank26080115	0:bf7b9fba3924	149	PinCfg.Portnum = 0;
frank26080115	0:bf7b9fba3924	150	PINSEL_ConfigPin(&PinCfg);
frank26080115	0:bf7b9fba3924	151	PinCfg.Pinnum = 11;
frank26080115	0:bf7b9fba3924	152	PINSEL_ConfigPin(&PinCfg);
frank26080115	0:bf7b9fba3924	153	#endif
frank26080115	0:bf7b9fba3924	154
frank26080115	0:bf7b9fba3924	155	// Initialize Slave I2C peripheral
frank26080115	0:bf7b9fba3924	156	I2C_Init(I2CDEV_S, 100000);
frank26080115	0:bf7b9fba3924	157
frank26080115	0:bf7b9fba3924	158	/* Set Own slave address for I2C device */
frank26080115	0:bf7b9fba3924	159	OwnSlavAdr.GeneralCallState = ENABLE;
frank26080115	0:bf7b9fba3924	160	OwnSlavAdr.SlaveAddrChannel= 0;
frank26080115	0:bf7b9fba3924	161	OwnSlavAdr.SlaveAddrMaskValue = 0xFF;
frank26080115	0:bf7b9fba3924	162	OwnSlavAdr.SlaveAddr_7bit = I2CDEV_S_OWN_ADDR;
frank26080115	0:bf7b9fba3924	163	I2C_SetOwnSlaveAddr(I2CDEV_S, &OwnSlavAdr);
frank26080115	0:bf7b9fba3924	164
frank26080115	0:bf7b9fba3924	165	/* Enable Slave I2C operation */
frank26080115	0:bf7b9fba3924	166	I2C_Cmd(I2CDEV_S, ENABLE);
frank26080115	0:bf7b9fba3924	167
frank26080115	0:bf7b9fba3924	168	_DBG_("Press '1' to start");
frank26080115	0:bf7b9fba3924	169	while (_DG != '1');
frank26080115	0:bf7b9fba3924	170
frank26080115	0:bf7b9fba3924	171
frank26080115	0:bf7b9fba3924	172	/* Reading -------------------------------------------------------- */
frank26080115	0:bf7b9fba3924	173	_DBG_("Start Reading...");
frank26080115	0:bf7b9fba3924	174
frank26080115	0:bf7b9fba3924	175	/* Initialize buffer */
frank26080115	0:bf7b9fba3924	176	Buffer_Init(0);
frank26080115	0:bf7b9fba3924	177
frank26080115	0:bf7b9fba3924	178	/* Start I2C slave device first */
frank26080115	0:bf7b9fba3924	179	transferSCfg.tx_data = NULL;
frank26080115	0:bf7b9fba3924	180	transferSCfg.tx_length = 0;
frank26080115	0:bf7b9fba3924	181	transferSCfg.rx_data = Slave_Buf;
frank26080115	0:bf7b9fba3924	182	transferSCfg.rx_length = sizeof(Slave_Buf);
frank26080115	0:bf7b9fba3924	183	I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_POLLING);
frank26080115	0:bf7b9fba3924	184
frank26080115	0:bf7b9fba3924	185	pdat = Slave_Buf;
frank26080115	0:bf7b9fba3924	186	// Verify
frank26080115	0:bf7b9fba3924	187	for (tempp = 0; tempp < sizeof(Slave_Buf); tempp++){
frank26080115	0:bf7b9fba3924	188	if (*pdat++ != tempp){
frank26080115	0:bf7b9fba3924	189	_DBG_("Verify error");
frank26080115	0:bf7b9fba3924	190	break;
frank26080115	0:bf7b9fba3924	191	}
frank26080115	0:bf7b9fba3924	192	}
frank26080115	0:bf7b9fba3924	193	if (tempp == sizeof(Slave_Buf)){
frank26080115	0:bf7b9fba3924	194	_DBG_("Verify successfully");
frank26080115	0:bf7b9fba3924	195	}
frank26080115	0:bf7b9fba3924	196
frank26080115	0:bf7b9fba3924	197	/* Transmit -------------------------------------------------------- */
frank26080115	0:bf7b9fba3924	198	_DBG_("Start Transmit...");
frank26080115	0:bf7b9fba3924	199
frank26080115	0:bf7b9fba3924	200	/* Initialize buffer */
frank26080115	0:bf7b9fba3924	201	Buffer_Init(1);
frank26080115	0:bf7b9fba3924	202
frank26080115	0:bf7b9fba3924	203	/* Start I2C slave device first */
frank26080115	0:bf7b9fba3924	204	transferSCfg.tx_data = Slave_Buf;
frank26080115	0:bf7b9fba3924	205	transferSCfg.tx_length = sizeof(Slave_Buf);
frank26080115	0:bf7b9fba3924	206	transferSCfg.rx_data = NULL;
frank26080115	0:bf7b9fba3924	207	transferSCfg.rx_length = 0;
frank26080115	0:bf7b9fba3924	208	I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_POLLING);
frank26080115	0:bf7b9fba3924	209
frank26080115	0:bf7b9fba3924	210	_DBG_("Complete!");
frank26080115	0:bf7b9fba3924	211
frank26080115	0:bf7b9fba3924	212	#if 1
frank26080115	0:bf7b9fba3924	213	/* Receive and transmit -------------------------------------------------------- */
frank26080115	0:bf7b9fba3924	214	_DBG_("Start Receive, wait for repeat start and transmit...");
frank26080115	0:bf7b9fba3924	215
frank26080115	0:bf7b9fba3924	216	/* Initialize buffer */
frank26080115	0:bf7b9fba3924	217	Buffer_Init(1);
frank26080115	0:bf7b9fba3924	218	slave_test[0] = 0xAA;
frank26080115	0:bf7b9fba3924	219	slave_test[1] = 0x55;
frank26080115	0:bf7b9fba3924	220
frank26080115	0:bf7b9fba3924	221	/* Start I2C slave device first */
frank26080115	0:bf7b9fba3924	222	transferSCfg.tx_data = Slave_Buf;
frank26080115	0:bf7b9fba3924	223	transferSCfg.tx_length = sizeof(Slave_Buf);
frank26080115	0:bf7b9fba3924	224	transferSCfg.rx_data = slave_test;
frank26080115	0:bf7b9fba3924	225	transferSCfg.rx_length = sizeof(slave_test);
frank26080115	0:bf7b9fba3924	226	I2C_SlaveTransferData(I2CDEV_S, &transferSCfg, I2C_TRANSFER_POLLING);
frank26080115	0:bf7b9fba3924	227	_DBG_("Receive Data:");
frank26080115	0:bf7b9fba3924	228	_DBH(slave_test[0]); _DBG_("");
frank26080115	0:bf7b9fba3924	229	_DBH(slave_test[1]); _DBG_("");
frank26080115	0:bf7b9fba3924	230	_DBG_("Complete!");
frank26080115	0:bf7b9fba3924	231	#endif
frank26080115	0:bf7b9fba3924	232
frank26080115	0:bf7b9fba3924	233
frank26080115	0:bf7b9fba3924	234	/* Loop forever */
frank26080115	0:bf7b9fba3924	235	while(1);
frank26080115	0:bf7b9fba3924	236	return 1;
frank26080115	0:bf7b9fba3924	237	}
frank26080115	0:bf7b9fba3924	238
frank26080115	0:bf7b9fba3924	239	/* With ARM and GHS toolsets, the entry point is main() - this will
frank26080115	0:bf7b9fba3924	240	allow the linker to generate wrapper code to setup stacks, allocate
frank26080115	0:bf7b9fba3924	241	heap area, and initialize and copy code and data segments. For GNU
frank26080115	0:bf7b9fba3924	242	toolsets, the entry point is through __start() in the crt0_gnu.asm
frank26080115	0:bf7b9fba3924	243	file, and that startup code will setup stacks and data */
frank26080115	0:bf7b9fba3924	244	int main(void)
frank26080115	0:bf7b9fba3924	245	{
frank26080115	0:bf7b9fba3924	246	return c_entry();
frank26080115	0:bf7b9fba3924	247	}
frank26080115	0:bf7b9fba3924	248
frank26080115	0:bf7b9fba3924	249
frank26080115	0:bf7b9fba3924	250	#ifdef DEBUG
frank26080115	0:bf7b9fba3924	251	/*******************************************************************************
frank26080115	0:bf7b9fba3924	252	* @brief Reports the name of the source file and the source line number
frank26080115	0:bf7b9fba3924	253	* where the CHECK_PARAM error has occurred.
frank26080115	0:bf7b9fba3924	254	* @param[in] file Pointer to the source file name
frank26080115	0:bf7b9fba3924	255	* @param[in] line assert_param error line source number
frank26080115	0:bf7b9fba3924	256	* @return None
frank26080115	0:bf7b9fba3924	257	*******************************************************************************/
frank26080115	0:bf7b9fba3924	258	void check_failed(uint8_t *file, uint32_t line)
frank26080115	0:bf7b9fba3924	259	{
frank26080115	0:bf7b9fba3924	260	/* User can add his own implementation to report the file name and line number,
frank26080115	0:bf7b9fba3924	261	ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
frank26080115	0:bf7b9fba3924	262
frank26080115	0:bf7b9fba3924	263	/* Infinite loop */
frank26080115	0:bf7b9fba3924	264	while(1);
frank26080115	0:bf7b9fba3924	265	}
frank26080115	0:bf7b9fba3924	266	#endif
frank26080115	0:bf7b9fba3924	267
frank26080115	0:bf7b9fba3924	268	/*
frank26080115	0:bf7b9fba3924	269	* @}
frank26080115	0:bf7b9fba3924	270	*/

Repository toolbox

Export to desktop IDE

Build repository

Repository details

Type:	Program
Created:	20 Mar 2011
Imports:	199
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	7

I2C/slave/slave.c@0:bf7b9fba3924, 2011-03-20 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning