xeye_ atsu
/
DMA_LLI_TEST
LINKED LIST TEST on mbed
Diff: main.cpp
- Revision:
- 0:e8bfffbb3ab6
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sat Feb 26 03:55:12 2011 +0000 @@ -0,0 +1,302 @@ +#include "mbed.h" +/***********************************************************************//** + * @file link_list.c + * @purpose This example used to test GPDMA Link list function + * @version 1.0 + * @date 16. July. 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 "debug_frmwrk.h" + +/* Example group ----------------------------------------------------------- */ +/** @defgroup GPDMA_Link_list Link_list + * @ingroup GPDMA_Examples + * @{ + */ + +/************************** PRIVATE DEFINTIONS*************************/ +/** DMA transfer size */ +#define DMA_SIZE 32 + +/************************** PRIVATE VARIABLES *************************/ +uint8_t menu[]= + "********************************************************************************\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 - 115200 bps \n\r" + "This example used to test GPDMA link list function \n\r" + "********************************************************************************\n\r"; +uint8_t menu2[] = "Demo terminated! \n\r"; +uint8_t err_menu[] = "Buffer Check fail!\n\r"; +uint8_t compl_menu[] = "Buffer Check success!\n\r"; + +uint32_t DMADest_Buffer[DMA_SIZE]; + +#if (defined (__ICCARM__)) +#pragma location = "data_init" +uint32_t const DMASrc_Buffer1[DMA_SIZE/2] = +#else +uint32_t DMASrc_Buffer1[DMA_SIZE/2] __attribute__((at(0x2007C000))) = +#endif +{ + 0x01020304,0x05060708,0x090A0B0C,0x0D0E0F10, + 0x11121314,0x15161718,0x191A1B1C,0x1D1E1F20, + 0x21222324,0x25262728,0x292A2B2C,0x2D2E2F30, + 0x31323334,0x35363738,0x393A3B3C,0x3D3E3F40 +}; + +// Terminal Counter flag for Channel 0 +__IO uint32_t Channel0_TC; + +// Error Counter flag for Channel 0 +__IO uint32_t Channel0_Err; + +#if (defined (__ICCARM__)) +#pragma location = "data_init" +uint32_t const DMASrc_Buffer2[DMA_SIZE/2] = +#else +uint32_t DMASrc_Buffer2[DMA_SIZE/2] __attribute__((at(0x2007C200)))= +#endif +{ + 0x41424344,0x45464748,0x494A4B4C,0x4D4E4F50, + 0x51525354,0x55565758,0x595A5B5C,0x5D5E5F60, + 0x61626364,0x65666768,0x696A6B6C,0x6D6E6F70, + 0x71727374,0x75767778,0x797A7B7C,0x7D7E7F80 +}; + +/*-------------------------MAIN FUNCTION------------------------------*/ +extern "C" void DMA_IRQHandler (void); + +void print_menu(void); +void Error_Loop(void); + +/*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ +/*********************************************************************//** + * @brief GPDMA interrupt handler sub-routine + * @param[in] None + * @return None + **********************************************************************/ +void DMA_IRQHandler (void) +{ + printf("hogehogeIRQ \r\n"); + // 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(menu); +} + + +/*********************************************************************//** + * @brief Verify buffer + * @param[in] none + * @return None + **********************************************************************/ +void Buffer_Verify(void) +{ + uint8_t i; + uint32_t *src_addr = (uint32_t *)DMASrc_Buffer1; + uint32_t *dest_addr = (uint32_t *)DMADest_Buffer; + + for ( i = 0; i < DMA_SIZE/2; i++ ) + { + if ( *src_addr++ != *dest_addr++ ) + { + /* Call Error Loop */ + Error_Loop(); + } + } + src_addr = (uint32_t *)DMASrc_Buffer2; + for ( i = 0; i < DMA_SIZE/2; 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) +{ + printf("start! \r\n"); + GPDMA_Channel_CFG_Type GPDMACfg; + GPDMA_LLI_Type DMA_LLI_Struct[2]; + + /* Initialize debug via UART0 + * 115200bps + * 8 data bit + * No parity + * 1 stop bit + * No flow control + */ + //debug_frmwrk_init(); + + // print welcome screen + //print_menu(); + printf("Go! \r\n"); + /* GPDMA block section -------------------------------------------- */ + /* Disable GPDMA interrupt */ + NVIC_DisableIRQ(DMA_IRQn); + /* preemption = 1, sub-priority = 1 */ + NVIC_SetPriority(DMA_IRQn, ((0x01<<3)|0x01)); + + /* Initialize GPDMA controller */ + GPDMA_Init(); + + /* Init GPDMA link list */ + DMA_LLI_Struct[0].SrcAddr = (uint32_t)&DMASrc_Buffer1; + DMA_LLI_Struct[0].DstAddr = (uint32_t)&DMADest_Buffer; + DMA_LLI_Struct[0].NextLLI = (uint32_t)&DMA_LLI_Struct[1]; + DMA_LLI_Struct[0].Control = (DMA_SIZE/2) + | (2<<18) //source width 32 bit + | (2<<21) //dest. width 32 bit + | (1<<26) //source increment + | (1<<27) + | (1<<31) + ; + DMA_LLI_Struct[1].SrcAddr = (uint32_t)&DMASrc_Buffer2; + DMA_LLI_Struct[1].DstAddr = ((uint32_t)&DMADest_Buffer) + (DMA_SIZE/2)*4; + DMA_LLI_Struct[1].NextLLI = (uint32_t)&DMA_LLI_Struct[0]; + DMA_LLI_Struct[1].Control = (DMA_SIZE/2) + | (2<<18) //source width 32 bit + | (2<<21) //dest. width 32 bit + | (1<<26) //source increment + | (1<<27) + | (1<<31) + ; + + // Setup GPDMA channel -------------------------------- + // channel 0 + GPDMACfg.ChannelNum = 0; + // Source memory + GPDMACfg.SrcMemAddr = (uint32_t)DMASrc_Buffer1; + // Destination memory + GPDMACfg.DstMemAddr = (uint32_t)DMADest_Buffer; + // 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 + GPDMACfg.DMALLI = (uint32_t)&DMA_LLI_Struct[0]; + // Setup channel with given parameter + GPDMA_Setup(&GPDMACfg); + + /* Reset terminal counter */ + Channel0_TC = 0; + /* Reset Error counter */ + Channel0_Err = 0; + + //_DBG_("Start transfer..."); + + // Enable GPDMA channel 0 + GPDMA_ChannelCmd(0, ENABLE); + + /* Enable GPDMA interrupt */ + NVIC_EnableIRQ(DMA_IRQn); + + /* Wait for GPDMA processing complete */ + while ((Channel0_TC == 0) && (Channel0_Err == 0)); + + /* Verify buffer */ + Buffer_Verify(); + + //_DBG(compl_menu); + printf("softcontrol end\r\n"); + /* 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 + +/* + * @} + */