These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: SSP/Master/ssp_master.c
- Revision:
- 0:bf7b9fba3924
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SSP/Master/ssp_master.c Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,227 @@ +/***********************************************************************//** + * @file ssp_master.c + * @purpose This example describes how to use SPP in master mode + * @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_ssp.h" +#include "lpc17xx_libcfg.h" +#include "lpc17xx_pinsel.h" +#include "debug_frmwrk.h" +#include "lpc17xx_gpio.h" + +/* Example group ----------------------------------------------------------- */ +/** @defgroup SSP_Master Master + * @ingroup SSP_Examples + * @{ + */ + +/************************** PRIVATE DEFINTIONS ************************/ +/** Max buffer length */ +#define BUFFER_SIZE 0x40 + + +/************************** PRIVATE VARIABLES *************************/ +uint8_t menu1[] = +"********************************************************************************\n\r" +"Hello NXP Semiconductors \n\r" +"SSP demo \n\r" +"\t - MCU: LPC17xx \n\r" +"\t - Core: ARM Cortex-M3 \n\r" +"\t - Communicate via: UART0 - 115200bps \n\r" +"\t An example of SSP using polling mode to test the SSP driver \n\r" +" This example uses SSP in SPI mode as master to communicate with an SSP slave device \n\r" +" The master and slave transfer together a number of data byte \n\r" +"********************************************************************************\n\r"; +uint8_t menu2[] = "Demo terminated! \n\r"; + +// SSP Configuration structure variable +SSP_CFG_Type SSP_ConfigStruct; + +// Tx buffer +uint8_t Tx_Buf[BUFFER_SIZE]; + +// Rx buffer +uint8_t Rx_Buf[BUFFER_SIZE]; + +/************************** PRIVATE FUNCTIONS *************************/ +void print_menu(void); +void Buffer_Init(void); +void Error_Loop(void); +void Buffer_Verify(void); + +/*-------------------------PRIVATE FUNCTIONS------------------------------*/ +/*********************************************************************//** + * @brief Initialize buffer + * @param[in] None + * @return None + **********************************************************************/ +void Buffer_Init(void) +{ + uint8_t i; + + for (i = 0; i < BUFFER_SIZE; i++) { + Tx_Buf[i] = i; + Rx_Buf[i] = 0; + } +} + +/*********************************************************************//** + * @brief Error Loop (called by Buffer_Verify() if any error) + * @param[in] none + * @return None + **********************************************************************/ +void Error_Loop(void) +{ + /* Loop forever */ + while (1); +} + + +/*********************************************************************//** + * @brief Verify buffer + * @param[in] none + * @return None + **********************************************************************/ +void Buffer_Verify(void) +{ + uint8_t i; + uint8_t *src_addr = (uint8_t *) &Tx_Buf[0]; + uint8_t *dest_addr = (uint8_t *) &Rx_Buf[0]; + + for ( i = 0; i < BUFFER_SIZE; i++ ) + { + if ( *src_addr++ != *dest_addr++ ) + { + _DBG_("Verify error"); + /* Call Error Loop */ + Error_Loop(); + } + } +} + + +/*********************************************************************//** + * @brief Print Welcome menu + * @param[in] none + * @return None + **********************************************************************/ +void print_menu(void) +{ + _DBG(menu1); +} + +/*-------------------------MAIN FUNCTION------------------------------*/ +/*********************************************************************//** + * @brief c_entry: Main SSP program body + * @param[in] None + * @return int + **********************************************************************/ +int c_entry(void) +{ + PINSEL_CFG_Type PinCfg; + SSP_DATA_SETUP_Type xferConfig; + + /* + * Initialize SPI pin connect + * P0.15 - SCK; + * P0.16 - SSEL + * P0.17 - MISO + * P0.18 - MOSI + */ + PinCfg.Funcnum = 2; + PinCfg.OpenDrain = 0; + PinCfg.Pinmode = 0; + PinCfg.Portnum = 0; + PinCfg.Pinnum = 15; + PINSEL_ConfigPin(&PinCfg); + PinCfg.Pinnum = 17; + PINSEL_ConfigPin(&PinCfg); + PinCfg.Pinnum = 18; + PINSEL_ConfigPin(&PinCfg); + PinCfg.Pinnum = 16; + PINSEL_ConfigPin(&PinCfg); + + /* Initialize debug via UART0 + * 115200bps + * 8 data bit + * No parity + * 1 stop bit + * No flow control + */ + debug_frmwrk_init(); + + // print welcome screen + print_menu(); + + // initialize SSP configuration structure to default + SSP_ConfigStructInit(&SSP_ConfigStruct); + // Initialize SSP peripheral with parameter given in structure above + SSP_Init(LPC_SSP0, &SSP_ConfigStruct); + + // Enable SSP peripheral + SSP_Cmd(LPC_SSP0, ENABLE); + + _DBG_("Press '1' to start transfer..."); + while (_DG != '1'); + + /* Initialize Buffer */ + _DBG_("Init buffer"); + Buffer_Init(); + + _DBG_("Start transfer..."); + + xferConfig.tx_data = Tx_Buf; + xferConfig.rx_data = Rx_Buf; + xferConfig.length = BUFFER_SIZE; + SSP_ReadWrite(LPC_SSP0, &xferConfig, SSP_TRANSFER_POLLING); + + // Verify buffer after transferring + Buffer_Verify(); + _DBG_("Verify complete!"); + + /* 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