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

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

UART/HWFlowControl/uart_hw_flow_control.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 uart_hw_flow_control.c
frank26080115	0:bf7b9fba3924	3	* @purpose This example describes how to using UART Hardware flow control mode
frank26080115	0:bf7b9fba3924	4	* @version 2.0
frank26080115	0:bf7b9fba3924	5	* @date 10. June. 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_uart.h"
frank26080115	0:bf7b9fba3924	20	#include "lpc17xx_libcfg.h"
frank26080115	0:bf7b9fba3924	21	#include "lpc17xx_pinsel.h"
frank26080115	0:bf7b9fba3924	22
frank26080115	0:bf7b9fba3924	23	/* Example group ----------------------------------------------------------- */
frank26080115	0:bf7b9fba3924	24	/** @defgroup UART_HWFlowControl HWFlowControl
frank26080115	0:bf7b9fba3924	25	* @ingroup UART_Examples
frank26080115	0:bf7b9fba3924	26	* @{
frank26080115	0:bf7b9fba3924	27	*/
frank26080115	0:bf7b9fba3924	28
frank26080115	0:bf7b9fba3924	29	/************************ PRIVATE DEFINITIONS ***********************/
frank26080115	0:bf7b9fba3924	30	#define TEST_UART (LPC_UART_TypeDef *)LPC_UART1
frank26080115	0:bf7b9fba3924	31
frank26080115	0:bf7b9fba3924	32	/************************ PRIVATE VARIABLES ***********************/
frank26080115	0:bf7b9fba3924	33	uint8_t menu1[] = "Hello NXP Semiconductors \n\r";
frank26080115	0:bf7b9fba3924	34	uint8_t menu2[] = "UART hardware flow control mode demo \n\r\t MCU LPC17xx - ARM Cortex-M3 \n\r\t UART1 - 9600bps \n\r";
frank26080115	0:bf7b9fba3924	35	uint8_t menu3[] = "UART demo terminated!";
frank26080115	0:bf7b9fba3924	36
frank26080115	0:bf7b9fba3924	37	/************************ PRIVATE FUNCTIONS ***********************/
frank26080115	0:bf7b9fba3924	38	void print_menu(void);
frank26080115	0:bf7b9fba3924	39
frank26080115	0:bf7b9fba3924	40	/-------------------------PRIVATE FUNCTIONS------------------------------/
frank26080115	0:bf7b9fba3924	41	/*******************************************************************//
frank26080115	0:bf7b9fba3924	42	* @brief Print Welcome menu
frank26080115	0:bf7b9fba3924	43	* @param[in] none
frank26080115	0:bf7b9fba3924	44	* @return None
frank26080115	0:bf7b9fba3924	45	**********************************************************************/
frank26080115	0:bf7b9fba3924	46	void print_menu(void)
frank26080115	0:bf7b9fba3924	47	{
frank26080115	0:bf7b9fba3924	48	UART_Send(TEST_UART, menu1, sizeof(menu1), BLOCKING);
frank26080115	0:bf7b9fba3924	49	UART_Send(TEST_UART, menu2, sizeof(menu2), BLOCKING);
frank26080115	0:bf7b9fba3924	50	}
frank26080115	0:bf7b9fba3924	51
frank26080115	0:bf7b9fba3924	52	/-------------------------MAIN FUNCTION------------------------------/
frank26080115	0:bf7b9fba3924	53	/*******************************************************************//
frank26080115	0:bf7b9fba3924	54	* @brief c_entry: Main UART program body
frank26080115	0:bf7b9fba3924	55	* @param[in] None
frank26080115	0:bf7b9fba3924	56	* @return int
frank26080115	0:bf7b9fba3924	57	**********************************************************************/
frank26080115	0:bf7b9fba3924	58	int c_entry(void)
frank26080115	0:bf7b9fba3924	59	{
frank26080115	0:bf7b9fba3924	60	// UART Configuration structure variable
frank26080115	0:bf7b9fba3924	61	UART_CFG_Type UARTConfigStruct;
frank26080115	0:bf7b9fba3924	62	// UART FIFO configuration Struct variable
frank26080115	0:bf7b9fba3924	63	UART_FIFO_CFG_Type UARTFIFOConfigStruct;
frank26080115	0:bf7b9fba3924	64	// Pin configuration for UART0
frank26080115	0:bf7b9fba3924	65	PINSEL_CFG_Type PinCfg;
frank26080115	0:bf7b9fba3924	66
frank26080115	0:bf7b9fba3924	67	uint32_t idx, len;
frank26080115	0:bf7b9fba3924	68	__IO FlagStatus exitflag;
frank26080115	0:bf7b9fba3924	69	uint8_t buffer[10];
frank26080115	0:bf7b9fba3924	70
frank26080115	0:bf7b9fba3924	71	/*
frank26080115	0:bf7b9fba3924	72	* Initialize UART1 pin connect
frank26080115	0:bf7b9fba3924	73	*/
frank26080115	0:bf7b9fba3924	74	PinCfg.Funcnum = 2;
frank26080115	0:bf7b9fba3924	75	PinCfg.OpenDrain = 0;
frank26080115	0:bf7b9fba3924	76	PinCfg.Pinmode = 0;
frank26080115	0:bf7b9fba3924	77	PinCfg.Pinnum = 0;
frank26080115	0:bf7b9fba3924	78	PinCfg.Portnum = 2;
frank26080115	0:bf7b9fba3924	79	PINSEL_ConfigPin(&PinCfg);//P2.0 TXD1
frank26080115	0:bf7b9fba3924	80	PinCfg.Pinnum = 1;
frank26080115	0:bf7b9fba3924	81	PINSEL_ConfigPin(&PinCfg);//P2.1 RXD1
frank26080115	0:bf7b9fba3924	82	PinCfg.Pinnum = 2;
frank26080115	0:bf7b9fba3924	83	PINSEL_ConfigPin(&PinCfg);//P2.2 CTS1
frank26080115	0:bf7b9fba3924	84	PinCfg.Pinnum = 7;
frank26080115	0:bf7b9fba3924	85	PINSEL_ConfigPin(&PinCfg);//P2.7 RTS1
frank26080115	0:bf7b9fba3924	86
frank26080115	0:bf7b9fba3924	87	/* Initialize UART Configuration parameter structure to default state:
frank26080115	0:bf7b9fba3924	88	* Baudrate = 9600bps
frank26080115	0:bf7b9fba3924	89	* 8 data bit
frank26080115	0:bf7b9fba3924	90	* 1 Stop bit
frank26080115	0:bf7b9fba3924	91	* None parity
frank26080115	0:bf7b9fba3924	92	*/
frank26080115	0:bf7b9fba3924	93	UART_ConfigStructInit(&UARTConfigStruct);
frank26080115	0:bf7b9fba3924	94
frank26080115	0:bf7b9fba3924	95	// Initialize UART0 peripheral with given to corresponding parameter
frank26080115	0:bf7b9fba3924	96	UART_Init(TEST_UART, &UARTConfigStruct);
frank26080115	0:bf7b9fba3924	97
frank26080115	0:bf7b9fba3924	98	/* Initialize FIFOConfigStruct to default state:
frank26080115	0:bf7b9fba3924	99	* - FIFO_DMAMode = DISABLE
frank26080115	0:bf7b9fba3924	100	* - FIFO_Level = UART_FIFO_TRGLEV0
frank26080115	0:bf7b9fba3924	101	* - FIFO_ResetRxBuf = ENABLE
frank26080115	0:bf7b9fba3924	102	* - FIFO_ResetTxBuf = ENABLE
frank26080115	0:bf7b9fba3924	103	* - FIFO_State = ENABLE
frank26080115	0:bf7b9fba3924	104	*/
frank26080115	0:bf7b9fba3924	105	UART_FIFOConfigStructInit(&UARTFIFOConfigStruct);
frank26080115	0:bf7b9fba3924	106
frank26080115	0:bf7b9fba3924	107	// Initialize FIFO for UART0 peripheral
frank26080115	0:bf7b9fba3924	108	UART_FIFOConfig(TEST_UART, &UARTFIFOConfigStruct);
frank26080115	0:bf7b9fba3924	109
frank26080115	0:bf7b9fba3924	110	// Configure UART1 hardware flow control RTS/CTS
frank26080115	0:bf7b9fba3924	111	UART_FullModemForcePinState((LPC_UART1_TypeDef *)LPC_UART1,UART1_MODEM_PIN_RTS,ACTIVE);
frank26080115	0:bf7b9fba3924	112
frank26080115	0:bf7b9fba3924	113	// Enable UART Transmit
frank26080115	0:bf7b9fba3924	114	UART_TxCmd(TEST_UART, ENABLE);
frank26080115	0:bf7b9fba3924	115
frank26080115	0:bf7b9fba3924	116	// print welcome screen
frank26080115	0:bf7b9fba3924	117	print_menu();
frank26080115	0:bf7b9fba3924	118
frank26080115	0:bf7b9fba3924	119	// Reset exit flag
frank26080115	0:bf7b9fba3924	120	exitflag = RESET;
frank26080115	0:bf7b9fba3924	121
frank26080115	0:bf7b9fba3924	122	/* Read some data from the buffer */
frank26080115	0:bf7b9fba3924	123	while (exitflag == RESET)
frank26080115	0:bf7b9fba3924	124	{
frank26080115	0:bf7b9fba3924	125	len = 0;
frank26080115	0:bf7b9fba3924	126	while (len == 0)
frank26080115	0:bf7b9fba3924	127	{
frank26080115	0:bf7b9fba3924	128	len = UART_Receive(TEST_UART, buffer, sizeof(buffer), NONE_BLOCKING);
frank26080115	0:bf7b9fba3924	129	}
frank26080115	0:bf7b9fba3924	130
frank26080115	0:bf7b9fba3924	131	/* Got some data */
frank26080115	0:bf7b9fba3924	132	idx = 0;
frank26080115	0:bf7b9fba3924	133	while (idx < len)
frank26080115	0:bf7b9fba3924	134	{
frank26080115	0:bf7b9fba3924	135	if (buffer[idx] == 27)
frank26080115	0:bf7b9fba3924	136	{
frank26080115	0:bf7b9fba3924	137	/* ESC key, set exit flag */
frank26080115	0:bf7b9fba3924	138	UART_Send(TEST_UART, menu3, sizeof(menu3), BLOCKING);
frank26080115	0:bf7b9fba3924	139	exitflag = SET;
frank26080115	0:bf7b9fba3924	140	}
frank26080115	0:bf7b9fba3924	141	else if (buffer[idx] == 'r')
frank26080115	0:bf7b9fba3924	142	{
frank26080115	0:bf7b9fba3924	143	print_menu();
frank26080115	0:bf7b9fba3924	144	}
frank26080115	0:bf7b9fba3924	145	else
frank26080115	0:bf7b9fba3924	146	{
frank26080115	0:bf7b9fba3924	147	/* Echo it back */
frank26080115	0:bf7b9fba3924	148	UART_Send(TEST_UART, &buffer[idx], 1, BLOCKING);
frank26080115	0:bf7b9fba3924	149	}
frank26080115	0:bf7b9fba3924	150	idx++;
frank26080115	0:bf7b9fba3924	151	}
frank26080115	0:bf7b9fba3924	152	}
frank26080115	0:bf7b9fba3924	153
frank26080115	0:bf7b9fba3924	154	// wait for current transmission complete - THR must be empty
frank26080115	0:bf7b9fba3924	155	while (UART_CheckBusy(TEST_UART) == SET);
frank26080115	0:bf7b9fba3924	156
frank26080115	0:bf7b9fba3924	157	// DeInitialize UART0 peripheral
frank26080115	0:bf7b9fba3924	158	UART_DeInit(TEST_UART);
frank26080115	0:bf7b9fba3924	159
frank26080115	0:bf7b9fba3924	160	/* Loop forever */
frank26080115	0:bf7b9fba3924	161	while(1);
frank26080115	0:bf7b9fba3924	162	return 1;
frank26080115	0:bf7b9fba3924	163	}
frank26080115	0:bf7b9fba3924	164
frank26080115	0:bf7b9fba3924	165	/* With ARM and GHS toolsets, the entry point is main() - this will
frank26080115	0:bf7b9fba3924	166	allow the linker to generate wrapper code to setup stacks, allocate
frank26080115	0:bf7b9fba3924	167	heap area, and initialize and copy code and data segments. For GNU
frank26080115	0:bf7b9fba3924	168	toolsets, the entry point is through __start() in the crt0_gnu.asm
frank26080115	0:bf7b9fba3924	169	file, and that startup code will setup stacks and data */
frank26080115	0:bf7b9fba3924	170	int main(void)
frank26080115	0:bf7b9fba3924	171	{
frank26080115	0:bf7b9fba3924	172	return c_entry();
frank26080115	0:bf7b9fba3924	173	}
frank26080115	0:bf7b9fba3924	174
frank26080115	0:bf7b9fba3924	175
frank26080115	0:bf7b9fba3924	176	#ifdef DEBUG
frank26080115	0:bf7b9fba3924	177	/*******************************************************************************
frank26080115	0:bf7b9fba3924	178	* @brief Reports the name of the source file and the source line number
frank26080115	0:bf7b9fba3924	179	* where the CHECK_PARAM error has occurred.
frank26080115	0:bf7b9fba3924	180	* @param[in] file Pointer to the source file name
frank26080115	0:bf7b9fba3924	181	* @param[in] line assert_param error line source number
frank26080115	0:bf7b9fba3924	182	* @return None
frank26080115	0:bf7b9fba3924	183	*******************************************************************************/
frank26080115	0:bf7b9fba3924	184	void check_failed(uint8_t *file, uint32_t line)
frank26080115	0:bf7b9fba3924	185	{
frank26080115	0:bf7b9fba3924	186	/* User can add his own implementation to report the file name and line number,
frank26080115	0:bf7b9fba3924	187	ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
frank26080115	0:bf7b9fba3924	188
frank26080115	0:bf7b9fba3924	189	/* Infinite loop */
frank26080115	0:bf7b9fba3924	190	while(1);
frank26080115	0:bf7b9fba3924	191	}
frank26080115	0:bf7b9fba3924	192	#endif
frank26080115	0:bf7b9fba3924	193	/*
frank26080115	0:bf7b9fba3924	194	* @}
frank26080115	0:bf7b9fba3924	195	*/

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

UART/HWFlowControl/uart_hw_flow_control.c@0:bf7b9fba3924, 2011-03-20 (annotated)

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