These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: GPDMA/GPDMA_Sleep/gpdma_sleep.c
- Revision:
- 0:bf7b9fba3924
diff -r 000000000000 -r bf7b9fba3924 GPDMA/GPDMA_Sleep/gpdma_sleep.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/GPDMA/GPDMA_Sleep/gpdma_sleep.c Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,283 @@ +/***********************************************************************//** + * @file gpdma_sleep.c + * @purpose This example used to test GPDMA operation in sleep mode + * @version 1.0 + * @date 18. June. 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_gpdma.h" +#include "lpc17xx_libcfg.h" +#include "lpc17xx_pinsel.h" +#include "debug_frmwrk.h" +#include "lpc17xx_clkpwr.h" + +/* Example group ----------------------------------------------------------- */ +/** @defgroup GPDMA_Sleep GPDMA_Sleep + * @ingroup GPDMA_Examples + * @{ + */ + +/************************** PRIVATE MACROS *************************/ +/** DMA transfer size */ +#define DMA_SIZE 0x100UL +/** DMA Source Address is AHBRAM1_BASE that used for USB RAM purpose, but + * it is not used in this example, so this memory section can be used for general purpose + * memory + */ +#define DMA_SRC LPC_AHBRAM1_BASE +/** DMA Source Address is (AHBRAM1_BASE + DMA_SIZE) that used for USB RAM purpose, but + * it is not used in this example, so this memory section can be used for general purpose + * memory + */ +#define DMA_DST (DMA_SRC+DMA_SIZE) + + +/************************** PRIVATE VARIABLES *************************/ +uint8_t menu1[] = + "********************************************************************************\n\r" + "Hello NXP Semiconductors \n\r" + "GPDMA demo \n\r" + "\t - MCU: LPC17xx \n\r" + "\t - Core: ARM Cortex-M3 \n\r" + "\t - Communicate via: UART0 - 115200bps \n\r" + " This example used to test GPDMA function in sleep mode\n\r" + " It will transfer 2 blocks of data from memory boundary \n\r" + " to the other memory boundary on RAM using GPDMA module in sleep mode \n\r" + "********************************************************************************\n\r"; +uint8_t menu2[] = "Demo terminated! \n\r"; +uint8_t err_menu[] = "Buffer Check fail!"; +uint8_t compl_menu[] = "Buffer Check success!"; + +// Terminal Counter flag for Channel 0 +__IO uint32_t Channel0_TC; + +// Error Counter flag for Channel 0 +__IO uint32_t Channel0_Err; + + +/************************** PRIVATE FUNCTIONS *************************/ +void DMA_IRQHandler (void); + +void print_menu(void); +void Buffer_Init(void); +void Error_Loop(void); + +/*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ +/*********************************************************************//** + * @brief GPDMA interrupt handler sub-routine + * @param[in] None + * @return None + **********************************************************************/ +void DMA_IRQHandler (void) +{ + // check GPDMA interrupt on channel 0 + if (GPDMA_IntGetStatus(GPDMA_STAT_INT, 0)){ //check interrupt status on channel 0 + // Check counter terminal status + if(GPDMA_IntGetStatus(GPDMA_STAT_INTTC, 0)){ + // Clear terminate counter Interrupt pending + GPDMA_ClearIntPending (GPDMA_STATCLR_INTTC, 0); + Channel0_TC++; + } + if (GPDMA_IntGetStatus(GPDMA_STAT_INTERR, 0)){ + // Clear error counter Interrupt pending + GPDMA_ClearIntPending (GPDMA_STATCLR_INTERR, 0); + Channel0_Err++; + } + } +} + +/*-------------------------PRIVATE FUNCTIONS-----------------------------*/ +/*********************************************************************//** + * @brief Print Welcome menu + * @param[in] none + * @return None + **********************************************************************/ +void print_menu(void) +{ + _DBG(menu1); +} + +/*********************************************************************//** + * @brief Initialize buffer + * @param[in] none + * @return None + **********************************************************************/ +void Buffer_Init(void) +{ + uint8_t i; + uint32_t *src_addr = (uint32_t *)DMA_SRC; + uint32_t *dest_addr = (uint32_t *)DMA_DST; + + for ( i = 0; i < DMA_SIZE/4; i++ ) + { + *src_addr++ = i; + *dest_addr++ = 0; + } +} + + +/*********************************************************************//** + * @brief Verify buffer + * @param[in] none + * @return None + **********************************************************************/ +void Buffer_Verify(void) +{ + uint8_t i; + uint32_t *src_addr = (uint32_t *)DMA_SRC; + uint32_t *dest_addr = (uint32_t *)DMA_DST; + + for ( i = 0; i < DMA_SIZE/4; i++ ) + { + if ( *src_addr++ != *dest_addr++ ) + { + /* Call Error Loop */ + Error_Loop(); + } + } +} + + +/*********************************************************************//** + * @brief Error Loop (called by Buffer_Verify() if any error) + * @param[in] none + * @return None + **********************************************************************/ +void Error_Loop(void) +{ + _DBG(err_menu); + + /* Loop forever */ + while (1); +} + + +/*-------------------------MAIN FUNCTION--------------------------------*/ +/*********************************************************************//** + * @brief c_entry: Main program body + * @param[in] None + * @return int + **********************************************************************/ +int c_entry(void) +{ + GPDMA_Channel_CFG_Type GPDMACfg; + + /* Initialize debug via UART0 + * 115200bps + * 8 data bit + * No parity + * 1 stop bit + * No flow control + */ + debug_frmwrk_init(); + + // print welcome screen + print_menu(); + + /* GPDMA block section -------------------------------------------- */ + /* Initialize buffer */ + _DBG_("Initialize Buffer..."); + Buffer_Init(); + + /* Disable GPDMA interrupt */ + NVIC_DisableIRQ(DMA_IRQn); + /* preemption = 1, sub-priority = 1 */ + NVIC_SetPriority(DMA_IRQn, ((0x01<<3)|0x01)); + + /* Initialize GPDMA controller */ + GPDMA_Init(); + + // Setup GPDMA channel -------------------------------- + // channel 0 + GPDMACfg.ChannelNum = 0; + // Source memory + GPDMACfg.SrcMemAddr = DMA_SRC; + // Destination memory + GPDMACfg.DstMemAddr = DMA_DST; + // Transfer size + GPDMACfg.TransferSize = DMA_SIZE; + // Transfer width + GPDMACfg.TransferWidth = GPDMA_WIDTH_WORD; + // Transfer type + GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_M2M; + // Source connection - unused + GPDMACfg.SrcConn = 0; + // Destination connection - unused + GPDMACfg.DstConn = 0; + // Linker List Item - unused + GPDMACfg.DMALLI = 0; + // Setup channel with given parameter + GPDMA_Setup(&GPDMACfg); + + /* Reset terminal counter */ + Channel0_TC = 0; + /* Reset Error counter */ + Channel0_Err = 0; + + _DBG_("Start GPDMA transfer and enter system in sleep mode..."); + + // Enable GPDMA channel 0 + GPDMA_ChannelCmd(0, ENABLE); + + /* Enable GPDMA interrupt */ + NVIC_EnableIRQ(DMA_IRQn); + + /* Enter in sleep mode */ + CLKPWR_Sleep(); + + /* Wait for GPDMA processing complete */ + while ((Channel0_TC == 0) && (Channel0_Err == 0)); + + /* Verify buffer */ + Buffer_Verify(); + + _DBG(compl_menu); + + /* 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 + +/* + * @} + */