Frank 26080115
These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
SSP/dma/ssp_dma.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 ssp_dma.c |
| frank26080115 | 0:bf7b9fba3924 | 3 | * @purpose This example describes how to use SPP in Master mode with |
| frank26080115 | 0:bf7b9fba3924 | 4 | * loop-back mode (MOSI <-> MISO), using DMA for both Tx and |
| frank26080115 | 0:bf7b9fba3924 | 5 | * Rx channel. |
| frank26080115 | 0:bf7b9fba3924 | 6 | * @version 2.0 |
| frank26080115 | 0:bf7b9fba3924 | 7 | * @date 21. May. 2010 |
| frank26080115 | 0:bf7b9fba3924 | 8 | * @author NXP MCU SW Application Team |
| frank26080115 | 0:bf7b9fba3924 | 9 | *--------------------------------------------------------------------- |
| frank26080115 | 0:bf7b9fba3924 | 10 | * Software that is described herein is for illustrative purposes only |
| frank26080115 | 0:bf7b9fba3924 | 11 | * which provides customers with programming information regarding the |
| frank26080115 | 0:bf7b9fba3924 | 12 | * products. This software is supplied "AS IS" without any warranties. |
| frank26080115 | 0:bf7b9fba3924 | 13 | * NXP Semiconductors assumes no responsibility or liability for the |
| frank26080115 | 0:bf7b9fba3924 | 14 | * use of the software, conveys no license or title under any patent, |
| frank26080115 | 0:bf7b9fba3924 | 15 | * copyright, or mask work right to the product. NXP Semiconductors |
| frank26080115 | 0:bf7b9fba3924 | 16 | * reserves the right to make changes in the software without |
| frank26080115 | 0:bf7b9fba3924 | 17 | * notification. NXP Semiconductors also make no representation or |
| frank26080115 | 0:bf7b9fba3924 | 18 | * warranty that such application will be suitable for the specified |
| frank26080115 | 0:bf7b9fba3924 | 19 | * use without further testing or modification. |
| frank26080115 | 0:bf7b9fba3924 | 20 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 21 | #include "lpc17xx_ssp.h" |
| frank26080115 | 0:bf7b9fba3924 | 22 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:bf7b9fba3924 | 23 | #include "lpc17xx_pinsel.h" |
| frank26080115 | 0:bf7b9fba3924 | 24 | #include "lpc17xx_gpdma.h" |
| frank26080115 | 0:bf7b9fba3924 | 25 | #include "debug_frmwrk.h" |
| frank26080115 | 0:bf7b9fba3924 | 26 | |
| frank26080115 | 0:bf7b9fba3924 | 27 | /* Example group ----------------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 28 | /** @defgroup SSP_dma dma |
| frank26080115 | 0:bf7b9fba3924 | 29 | * @ingroup SSP_Examples |
| frank26080115 | 0:bf7b9fba3924 | 30 | * @{ |
| frank26080115 | 0:bf7b9fba3924 | 31 | */ |
| frank26080115 | 0:bf7b9fba3924 | 32 | |
| frank26080115 | 0:bf7b9fba3924 | 33 | /************************** PRIVATE DEFINITIONS ***********************/ |
| frank26080115 | 0:bf7b9fba3924 | 34 | /* For DMA controller */ |
| frank26080115 | 0:bf7b9fba3924 | 35 | #define DMA_DATA_SIZE 65 |
| frank26080115 | 0:bf7b9fba3924 | 36 | |
| frank26080115 | 0:bf7b9fba3924 | 37 | /************************** PRIVATE VARIABLES *************************/ |
| frank26080115 | 0:bf7b9fba3924 | 38 | uint8_t menu1[] = |
| frank26080115 | 0:bf7b9fba3924 | 39 | "********************************************************************************\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 40 | "Hello NXP Semiconductors \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 41 | "SSP demo \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 42 | "\t - MCU: LPC17xx \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 43 | "\t - Core: ARM Cortex-M3 \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 44 | "\t - Communicate via: UART0 - 115200bps \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 45 | " This example uses SSP function in MASTER mode \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 46 | " with Loop-back mode (MOSI <-> MISO) \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 47 | " Transfer 64 bytes of data (in DMA mode for both Tx and Rx \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 48 | " channel) \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 49 | "********************************************************************************\n\r"; |
| frank26080115 | 0:bf7b9fba3924 | 50 | uint8_t menu2[] = "Demo terminated! \n\r"; |
| frank26080115 | 0:bf7b9fba3924 | 51 | |
| frank26080115 | 0:bf7b9fba3924 | 52 | // SSP Configuration structure variable |
| frank26080115 | 0:bf7b9fba3924 | 53 | SSP_CFG_Type SSP_ConfigStruct; |
| frank26080115 | 0:bf7b9fba3924 | 54 | |
| frank26080115 | 0:bf7b9fba3924 | 55 | // Terminal Counter flag for Channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 56 | __IO uint32_t Channel0_TC; |
| frank26080115 | 0:bf7b9fba3924 | 57 | |
| frank26080115 | 0:bf7b9fba3924 | 58 | // Error Counter flag for Channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 59 | __IO uint32_t Channel0_Err; |
| frank26080115 | 0:bf7b9fba3924 | 60 | |
| frank26080115 | 0:bf7b9fba3924 | 61 | // Terminal Counter flag for Channel 1 |
| frank26080115 | 0:bf7b9fba3924 | 62 | __IO uint32_t Channel1_TC; |
| frank26080115 | 0:bf7b9fba3924 | 63 | |
| frank26080115 | 0:bf7b9fba3924 | 64 | // Error Counter flag for Channel 1 |
| frank26080115 | 0:bf7b9fba3924 | 65 | __IO uint32_t Channel1_Err; |
| frank26080115 | 0:bf7b9fba3924 | 66 | |
| frank26080115 | 0:bf7b9fba3924 | 67 | // DMA source variable |
| frank26080115 | 0:bf7b9fba3924 | 68 | uint8_t dma_src[DMA_DATA_SIZE]; |
| frank26080115 | 0:bf7b9fba3924 | 69 | |
| frank26080115 | 0:bf7b9fba3924 | 70 | // DMA source variable |
| frank26080115 | 0:bf7b9fba3924 | 71 | uint8_t dma_dst[DMA_DATA_SIZE]; |
| frank26080115 | 0:bf7b9fba3924 | 72 | |
| frank26080115 | 0:bf7b9fba3924 | 73 | |
| frank26080115 | 0:bf7b9fba3924 | 74 | /************************** PRIVATE FUNCTIONS *************************/ |
| frank26080115 | 0:bf7b9fba3924 | 75 | void DMA_IRQHandler (void); |
| frank26080115 | 0:bf7b9fba3924 | 76 | |
| frank26080115 | 0:bf7b9fba3924 | 77 | void print_menu(void); |
| frank26080115 | 0:bf7b9fba3924 | 78 | void Buffer_Init(void); |
| frank26080115 | 0:bf7b9fba3924 | 79 | void Buffer_Verify(void); |
| frank26080115 | 0:bf7b9fba3924 | 80 | void Error_Loop(void); |
| frank26080115 | 0:bf7b9fba3924 | 81 | |
| frank26080115 | 0:bf7b9fba3924 | 82 | /*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 83 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 84 | * @brief GPDMA interrupt handler sub-routine |
| frank26080115 | 0:bf7b9fba3924 | 85 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 86 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 87 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 88 | void DMA_IRQHandler (void) |
| frank26080115 | 0:bf7b9fba3924 | 89 | { |
| frank26080115 | 0:bf7b9fba3924 | 90 | // check GPDMA interrupt on channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 91 | if (GPDMA_IntGetStatus(GPDMA_STAT_INT, 0)){ |
| frank26080115 | 0:bf7b9fba3924 | 92 | // Check counter terminal status |
| frank26080115 | 0:bf7b9fba3924 | 93 | if(GPDMA_IntGetStatus(GPDMA_STAT_INTTC, 0)){ |
| frank26080115 | 0:bf7b9fba3924 | 94 | // Clear terminate counter Interrupt pending |
| frank26080115 | 0:bf7b9fba3924 | 95 | GPDMA_ClearIntPending (GPDMA_STATCLR_INTTC, 0); |
| frank26080115 | 0:bf7b9fba3924 | 96 | Channel0_TC++; |
| frank26080115 | 0:bf7b9fba3924 | 97 | } |
| frank26080115 | 0:bf7b9fba3924 | 98 | // Check error terminal status |
| frank26080115 | 0:bf7b9fba3924 | 99 | if (GPDMA_IntGetStatus(GPDMA_STAT_INTERR, 0)){ |
| frank26080115 | 0:bf7b9fba3924 | 100 | // Clear error counter Interrupt pending |
| frank26080115 | 0:bf7b9fba3924 | 101 | GPDMA_ClearIntPending (GPDMA_STATCLR_INTERR, 0); |
| frank26080115 | 0:bf7b9fba3924 | 102 | Channel0_Err++; |
| frank26080115 | 0:bf7b9fba3924 | 103 | } |
| frank26080115 | 0:bf7b9fba3924 | 104 | } |
| frank26080115 | 0:bf7b9fba3924 | 105 | // check GPDMA interrupt on channel 1 |
| frank26080115 | 0:bf7b9fba3924 | 106 | if (GPDMA_IntGetStatus(GPDMA_STAT_INT, 1)){ |
| frank26080115 | 0:bf7b9fba3924 | 107 | // Check counter terminal status |
| frank26080115 | 0:bf7b9fba3924 | 108 | if(GPDMA_IntGetStatus(GPDMA_STAT_INTTC, 1)){ |
| frank26080115 | 0:bf7b9fba3924 | 109 | // Clear terminate counter Interrupt pending |
| frank26080115 | 0:bf7b9fba3924 | 110 | GPDMA_ClearIntPending (GPDMA_STATCLR_INTTC, 1); |
| frank26080115 | 0:bf7b9fba3924 | 111 | Channel1_TC++; |
| frank26080115 | 0:bf7b9fba3924 | 112 | } |
| frank26080115 | 0:bf7b9fba3924 | 113 | // Check error terminal status |
| frank26080115 | 0:bf7b9fba3924 | 114 | if (GPDMA_IntGetStatus(GPDMA_STAT_INTERR, 1)){ |
| frank26080115 | 0:bf7b9fba3924 | 115 | // Clear error counter Interrupt pending |
| frank26080115 | 0:bf7b9fba3924 | 116 | GPDMA_ClearIntPending (GPDMA_STATCLR_INTERR, 1); |
| frank26080115 | 0:bf7b9fba3924 | 117 | Channel1_Err++; |
| frank26080115 | 0:bf7b9fba3924 | 118 | } |
| frank26080115 | 0:bf7b9fba3924 | 119 | } |
| frank26080115 | 0:bf7b9fba3924 | 120 | } |
| frank26080115 | 0:bf7b9fba3924 | 121 | |
| frank26080115 | 0:bf7b9fba3924 | 122 | /*-------------------------PRIVATE FUNCTIONS------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 123 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 124 | * @brief Initialize buffer |
| frank26080115 | 0:bf7b9fba3924 | 125 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 126 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 127 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 128 | void Buffer_Init(void) |
| frank26080115 | 0:bf7b9fba3924 | 129 | { |
| frank26080115 | 0:bf7b9fba3924 | 130 | uint32_t i; |
| frank26080115 | 0:bf7b9fba3924 | 131 | uint8_t *src_addr = (uint8_t *)dma_src; |
| frank26080115 | 0:bf7b9fba3924 | 132 | uint8_t *dest_addr = (uint8_t *)dma_dst; |
| frank26080115 | 0:bf7b9fba3924 | 133 | |
| frank26080115 | 0:bf7b9fba3924 | 134 | for ( i = 0; i < DMA_DATA_SIZE; i++ ) |
| frank26080115 | 0:bf7b9fba3924 | 135 | { |
| frank26080115 | 0:bf7b9fba3924 | 136 | *src_addr++ = i; |
| frank26080115 | 0:bf7b9fba3924 | 137 | *dest_addr++ = 0; |
| frank26080115 | 0:bf7b9fba3924 | 138 | } |
| frank26080115 | 0:bf7b9fba3924 | 139 | } |
| frank26080115 | 0:bf7b9fba3924 | 140 | |
| frank26080115 | 0:bf7b9fba3924 | 141 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 142 | * @brief Verify buffer |
| frank26080115 | 0:bf7b9fba3924 | 143 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 144 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 145 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 146 | void Buffer_Verify(void) |
| frank26080115 | 0:bf7b9fba3924 | 147 | { |
| frank26080115 | 0:bf7b9fba3924 | 148 | uint32_t i; |
| frank26080115 | 0:bf7b9fba3924 | 149 | uint8_t *src_addr = (uint8_t *)dma_src; |
| frank26080115 | 0:bf7b9fba3924 | 150 | uint8_t *dest_addr = (uint8_t *)dma_dst; |
| frank26080115 | 0:bf7b9fba3924 | 151 | |
| frank26080115 | 0:bf7b9fba3924 | 152 | for ( i = 0; i < DMA_DATA_SIZE; i++ ) |
| frank26080115 | 0:bf7b9fba3924 | 153 | { |
| frank26080115 | 0:bf7b9fba3924 | 154 | if ( *src_addr++ != *dest_addr++ ) |
| frank26080115 | 0:bf7b9fba3924 | 155 | { |
| frank26080115 | 0:bf7b9fba3924 | 156 | /* Call Error Loop */ |
| frank26080115 | 0:bf7b9fba3924 | 157 | _DBG_("Verify error"); |
| frank26080115 | 0:bf7b9fba3924 | 158 | Error_Loop(); |
| frank26080115 | 0:bf7b9fba3924 | 159 | } |
| frank26080115 | 0:bf7b9fba3924 | 160 | } |
| frank26080115 | 0:bf7b9fba3924 | 161 | } |
| frank26080115 | 0:bf7b9fba3924 | 162 | |
| frank26080115 | 0:bf7b9fba3924 | 163 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 164 | * @brief Error Loop (called by Buffer_Verify() if any error) |
| frank26080115 | 0:bf7b9fba3924 | 165 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 166 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 167 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 168 | void Error_Loop(void) |
| frank26080115 | 0:bf7b9fba3924 | 169 | { |
| frank26080115 | 0:bf7b9fba3924 | 170 | /* Loop forever */ |
| frank26080115 | 0:bf7b9fba3924 | 171 | while (1); |
| frank26080115 | 0:bf7b9fba3924 | 172 | } |
| frank26080115 | 0:bf7b9fba3924 | 173 | |
| frank26080115 | 0:bf7b9fba3924 | 174 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 175 | * @brief Print Welcome menu |
| frank26080115 | 0:bf7b9fba3924 | 176 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 177 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 178 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 179 | void print_menu(void) |
| frank26080115 | 0:bf7b9fba3924 | 180 | { |
| frank26080115 | 0:bf7b9fba3924 | 181 | _DBG(menu1); |
| frank26080115 | 0:bf7b9fba3924 | 182 | } |
| frank26080115 | 0:bf7b9fba3924 | 183 | |
| frank26080115 | 0:bf7b9fba3924 | 184 | /*-------------------------MAIN FUNCTION------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 185 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 186 | * @brief c_entry: Main SSP program body |
| frank26080115 | 0:bf7b9fba3924 | 187 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 188 | * @return int |
| frank26080115 | 0:bf7b9fba3924 | 189 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 190 | int c_entry(void) |
| frank26080115 | 0:bf7b9fba3924 | 191 | { |
| frank26080115 | 0:bf7b9fba3924 | 192 | GPDMA_Channel_CFG_Type GPDMACfg; |
| frank26080115 | 0:bf7b9fba3924 | 193 | PINSEL_CFG_Type PinCfg; |
| frank26080115 | 0:bf7b9fba3924 | 194 | |
| frank26080115 | 0:bf7b9fba3924 | 195 | /* |
| frank26080115 | 0:bf7b9fba3924 | 196 | * Initialize SSP pin connect |
| frank26080115 | 0:bf7b9fba3924 | 197 | * P0.15 - SCK; |
| frank26080115 | 0:bf7b9fba3924 | 198 | * P0.16 - SSEL |
| frank26080115 | 0:bf7b9fba3924 | 199 | * P0.17 - MISO |
| frank26080115 | 0:bf7b9fba3924 | 200 | * P0.18 - MOSI |
| frank26080115 | 0:bf7b9fba3924 | 201 | */ |
| frank26080115 | 0:bf7b9fba3924 | 202 | PinCfg.Funcnum = 2; |
| frank26080115 | 0:bf7b9fba3924 | 203 | PinCfg.OpenDrain = 0; |
| frank26080115 | 0:bf7b9fba3924 | 204 | PinCfg.Pinmode = 0; |
| frank26080115 | 0:bf7b9fba3924 | 205 | PinCfg.Portnum = 0; |
| frank26080115 | 0:bf7b9fba3924 | 206 | PinCfg.Pinnum = 15; |
| frank26080115 | 0:bf7b9fba3924 | 207 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 208 | PinCfg.Pinnum = 16; |
| frank26080115 | 0:bf7b9fba3924 | 209 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 210 | PinCfg.Pinnum = 17; |
| frank26080115 | 0:bf7b9fba3924 | 211 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 212 | PinCfg.Pinnum = 18; |
| frank26080115 | 0:bf7b9fba3924 | 213 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 214 | |
| frank26080115 | 0:bf7b9fba3924 | 215 | /* Initialize debug via UART0 |
| frank26080115 | 0:bf7b9fba3924 | 216 | * 115200bps |
| frank26080115 | 0:bf7b9fba3924 | 217 | * 8 data bit |
| frank26080115 | 0:bf7b9fba3924 | 218 | * No parity |
| frank26080115 | 0:bf7b9fba3924 | 219 | * 1 stop bit |
| frank26080115 | 0:bf7b9fba3924 | 220 | * No flow control |
| frank26080115 | 0:bf7b9fba3924 | 221 | */ |
| frank26080115 | 0:bf7b9fba3924 | 222 | debug_frmwrk_init(); |
| frank26080115 | 0:bf7b9fba3924 | 223 | |
| frank26080115 | 0:bf7b9fba3924 | 224 | // print welcome screen |
| frank26080115 | 0:bf7b9fba3924 | 225 | print_menu(); |
| frank26080115 | 0:bf7b9fba3924 | 226 | |
| frank26080115 | 0:bf7b9fba3924 | 227 | /* Initializing SSP device section ------------------------------------------------------ */ |
| frank26080115 | 0:bf7b9fba3924 | 228 | // initialize SSP configuration structure to default |
| frank26080115 | 0:bf7b9fba3924 | 229 | SSP_ConfigStructInit(&SSP_ConfigStruct); |
| frank26080115 | 0:bf7b9fba3924 | 230 | // Initialize SSP peripheral with parameter given in structure above |
| frank26080115 | 0:bf7b9fba3924 | 231 | SSP_Init(LPC_SSP0, &SSP_ConfigStruct); |
| frank26080115 | 0:bf7b9fba3924 | 232 | |
| frank26080115 | 0:bf7b9fba3924 | 233 | // Enable SSP peripheral |
| frank26080115 | 0:bf7b9fba3924 | 234 | SSP_Cmd(LPC_SSP0, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 235 | |
| frank26080115 | 0:bf7b9fba3924 | 236 | |
| frank26080115 | 0:bf7b9fba3924 | 237 | /* GPDMA Interrupt configuration section ------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 238 | /* preemption = 1, sub-priority = 1 */ |
| frank26080115 | 0:bf7b9fba3924 | 239 | NVIC_SetPriority(DMA_IRQn, ((0x01<<3)|0x01)); |
| frank26080115 | 0:bf7b9fba3924 | 240 | /* Enable SSP0 interrupt */ |
| frank26080115 | 0:bf7b9fba3924 | 241 | NVIC_EnableIRQ(DMA_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 242 | |
| frank26080115 | 0:bf7b9fba3924 | 243 | |
| frank26080115 | 0:bf7b9fba3924 | 244 | /* Initializing Buffer section ----------------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 245 | Buffer_Init(); |
| frank26080115 | 0:bf7b9fba3924 | 246 | |
| frank26080115 | 0:bf7b9fba3924 | 247 | /* Initialize GPDMA controller */ |
| frank26080115 | 0:bf7b9fba3924 | 248 | GPDMA_Init(); |
| frank26080115 | 0:bf7b9fba3924 | 249 | |
| frank26080115 | 0:bf7b9fba3924 | 250 | |
| frank26080115 | 0:bf7b9fba3924 | 251 | /* Setting GPDMA interrupt */ |
| frank26080115 | 0:bf7b9fba3924 | 252 | // Disable interrupt for DMA |
| frank26080115 | 0:bf7b9fba3924 | 253 | NVIC_DisableIRQ (DMA_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 254 | /* preemption = 1, sub-priority = 1 */ |
| frank26080115 | 0:bf7b9fba3924 | 255 | NVIC_SetPriority(DMA_IRQn, ((0x01<<3)|0x01)); |
| frank26080115 | 0:bf7b9fba3924 | 256 | |
| frank26080115 | 0:bf7b9fba3924 | 257 | |
| frank26080115 | 0:bf7b9fba3924 | 258 | /* Configure GPDMA channel 0 -------------------------------------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 259 | /* DMA Channel 0 */ |
| frank26080115 | 0:bf7b9fba3924 | 260 | GPDMACfg.ChannelNum = 0; |
| frank26080115 | 0:bf7b9fba3924 | 261 | // Source memory |
| frank26080115 | 0:bf7b9fba3924 | 262 | GPDMACfg.SrcMemAddr = (uint32_t) &dma_src; |
| frank26080115 | 0:bf7b9fba3924 | 263 | // Destination memory - Not used |
| frank26080115 | 0:bf7b9fba3924 | 264 | GPDMACfg.DstMemAddr = 0; |
| frank26080115 | 0:bf7b9fba3924 | 265 | // Transfer size |
| frank26080115 | 0:bf7b9fba3924 | 266 | GPDMACfg.TransferSize = sizeof(dma_src); |
| frank26080115 | 0:bf7b9fba3924 | 267 | // Transfer width - not used |
| frank26080115 | 0:bf7b9fba3924 | 268 | GPDMACfg.TransferWidth = 0; |
| frank26080115 | 0:bf7b9fba3924 | 269 | // Transfer type |
| frank26080115 | 0:bf7b9fba3924 | 270 | GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_M2P; |
| frank26080115 | 0:bf7b9fba3924 | 271 | // Source connection - unused |
| frank26080115 | 0:bf7b9fba3924 | 272 | GPDMACfg.SrcConn = 0; |
| frank26080115 | 0:bf7b9fba3924 | 273 | // Destination connection |
| frank26080115 | 0:bf7b9fba3924 | 274 | GPDMACfg.DstConn = GPDMA_CONN_SSP0_Tx; |
| frank26080115 | 0:bf7b9fba3924 | 275 | // Linker List Item - unused |
| frank26080115 | 0:bf7b9fba3924 | 276 | GPDMACfg.DMALLI = 0; |
| frank26080115 | 0:bf7b9fba3924 | 277 | // Setup channel with given parameter |
| frank26080115 | 0:bf7b9fba3924 | 278 | GPDMA_Setup(&GPDMACfg); |
| frank26080115 | 0:bf7b9fba3924 | 279 | |
| frank26080115 | 0:bf7b9fba3924 | 280 | /* Reset terminal counter */ |
| frank26080115 | 0:bf7b9fba3924 | 281 | Channel0_TC = 0; |
| frank26080115 | 0:bf7b9fba3924 | 282 | /* Reset Error counter */ |
| frank26080115 | 0:bf7b9fba3924 | 283 | Channel0_Err = 0; |
| frank26080115 | 0:bf7b9fba3924 | 284 | |
| frank26080115 | 0:bf7b9fba3924 | 285 | |
| frank26080115 | 0:bf7b9fba3924 | 286 | /* Configure GPDMA channel 1 -------------------------------------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 287 | /* DMA Channel 1 */ |
| frank26080115 | 0:bf7b9fba3924 | 288 | GPDMACfg.ChannelNum = 1; |
| frank26080115 | 0:bf7b9fba3924 | 289 | // Source memory - not used |
| frank26080115 | 0:bf7b9fba3924 | 290 | GPDMACfg.SrcMemAddr = 0; |
| frank26080115 | 0:bf7b9fba3924 | 291 | // Destination memory - Not used |
| frank26080115 | 0:bf7b9fba3924 | 292 | GPDMACfg.DstMemAddr = (uint32_t) &dma_dst; |
| frank26080115 | 0:bf7b9fba3924 | 293 | // Transfer size |
| frank26080115 | 0:bf7b9fba3924 | 294 | GPDMACfg.TransferSize = sizeof(dma_dst); |
| frank26080115 | 0:bf7b9fba3924 | 295 | // Transfer width - not used |
| frank26080115 | 0:bf7b9fba3924 | 296 | GPDMACfg.TransferWidth = 0; |
| frank26080115 | 0:bf7b9fba3924 | 297 | // Transfer type |
| frank26080115 | 0:bf7b9fba3924 | 298 | GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_P2M; |
| frank26080115 | 0:bf7b9fba3924 | 299 | // Source connection |
| frank26080115 | 0:bf7b9fba3924 | 300 | GPDMACfg.SrcConn = GPDMA_CONN_SSP0_Rx; |
| frank26080115 | 0:bf7b9fba3924 | 301 | // Destination connection - not used |
| frank26080115 | 0:bf7b9fba3924 | 302 | GPDMACfg.DstConn = 0; |
| frank26080115 | 0:bf7b9fba3924 | 303 | // Linker List Item - unused |
| frank26080115 | 0:bf7b9fba3924 | 304 | GPDMACfg.DMALLI = 0; |
| frank26080115 | 0:bf7b9fba3924 | 305 | // Setup channel with given parameter |
| frank26080115 | 0:bf7b9fba3924 | 306 | GPDMA_Setup(&GPDMACfg); |
| frank26080115 | 0:bf7b9fba3924 | 307 | |
| frank26080115 | 0:bf7b9fba3924 | 308 | /* Reset terminal counter */ |
| frank26080115 | 0:bf7b9fba3924 | 309 | Channel1_TC = 0; |
| frank26080115 | 0:bf7b9fba3924 | 310 | /* Reset Error counter */ |
| frank26080115 | 0:bf7b9fba3924 | 311 | Channel1_Err = 0; |
| frank26080115 | 0:bf7b9fba3924 | 312 | |
| frank26080115 | 0:bf7b9fba3924 | 313 | _DBG_("Start transfer..."); |
| frank26080115 | 0:bf7b9fba3924 | 314 | |
| frank26080115 | 0:bf7b9fba3924 | 315 | // Enable Tx and Rx DMA on SSP0 |
| frank26080115 | 0:bf7b9fba3924 | 316 | SSP_DMACmd (LPC_SSP0, SSP_DMA_RX, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 317 | SSP_DMACmd (LPC_SSP0, SSP_DMA_TX, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 318 | |
| frank26080115 | 0:bf7b9fba3924 | 319 | // Enable GPDMA channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 320 | GPDMA_ChannelCmd(0, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 321 | // Enable GPDMA channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 322 | GPDMA_ChannelCmd(1, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 323 | |
| frank26080115 | 0:bf7b9fba3924 | 324 | // Enable interrupt for DMA |
| frank26080115 | 0:bf7b9fba3924 | 325 | NVIC_EnableIRQ (DMA_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 326 | |
| frank26080115 | 0:bf7b9fba3924 | 327 | /* Wait for GPDMA processing complete */ |
| frank26080115 | 0:bf7b9fba3924 | 328 | while (((Channel0_TC == 0) && (Channel0_Err == 0)) \ |
| frank26080115 | 0:bf7b9fba3924 | 329 | || ((Channel1_TC == 0) && (Channel1_Err ==0))); |
| frank26080115 | 0:bf7b9fba3924 | 330 | |
| frank26080115 | 0:bf7b9fba3924 | 331 | /* Verify buffer */ |
| frank26080115 | 0:bf7b9fba3924 | 332 | Buffer_Verify(); |
| frank26080115 | 0:bf7b9fba3924 | 333 | |
| frank26080115 | 0:bf7b9fba3924 | 334 | _DBG_("Verify complete!"); |
| frank26080115 | 0:bf7b9fba3924 | 335 | |
| frank26080115 | 0:bf7b9fba3924 | 336 | /* Loop forever */ |
| frank26080115 | 0:bf7b9fba3924 | 337 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 338 | return 1; |
| frank26080115 | 0:bf7b9fba3924 | 339 | } |
| frank26080115 | 0:bf7b9fba3924 | 340 | |
| frank26080115 | 0:bf7b9fba3924 | 341 | /* With ARM and GHS toolsets, the entry point is main() - this will |
| frank26080115 | 0:bf7b9fba3924 | 342 | allow the linker to generate wrapper code to setup stacks, allocate |
| frank26080115 | 0:bf7b9fba3924 | 343 | heap area, and initialize and copy code and data segments. For GNU |
| frank26080115 | 0:bf7b9fba3924 | 344 | toolsets, the entry point is through __start() in the crt0_gnu.asm |
| frank26080115 | 0:bf7b9fba3924 | 345 | file, and that startup code will setup stacks and data */ |
| frank26080115 | 0:bf7b9fba3924 | 346 | int main(void) |
| frank26080115 | 0:bf7b9fba3924 | 347 | { |
| frank26080115 | 0:bf7b9fba3924 | 348 | return c_entry(); |
| frank26080115 | 0:bf7b9fba3924 | 349 | } |
| frank26080115 | 0:bf7b9fba3924 | 350 | |
| frank26080115 | 0:bf7b9fba3924 | 351 | |
| frank26080115 | 0:bf7b9fba3924 | 352 | #ifdef DEBUG |
| frank26080115 | 0:bf7b9fba3924 | 353 | /******************************************************************************* |
| frank26080115 | 0:bf7b9fba3924 | 354 | * @brief Reports the name of the source file and the source line number |
| frank26080115 | 0:bf7b9fba3924 | 355 | * where the CHECK_PARAM error has occurred. |
| frank26080115 | 0:bf7b9fba3924 | 356 | * @param[in] file Pointer to the source file name |
| frank26080115 | 0:bf7b9fba3924 | 357 | * @param[in] line assert_param error line source number |
| frank26080115 | 0:bf7b9fba3924 | 358 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 359 | *******************************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 360 | void check_failed(uint8_t *file, uint32_t line) |
| frank26080115 | 0:bf7b9fba3924 | 361 | { |
| frank26080115 | 0:bf7b9fba3924 | 362 | /* User can add his own implementation to report the file name and line number, |
| frank26080115 | 0:bf7b9fba3924 | 363 | ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
| frank26080115 | 0:bf7b9fba3924 | 364 | |
| frank26080115 | 0:bf7b9fba3924 | 365 | /* Infinite loop */ |
| frank26080115 | 0:bf7b9fba3924 | 366 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 367 | } |
| frank26080115 | 0:bf7b9fba3924 | 368 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 369 | |
| frank26080115 | 0:bf7b9fba3924 | 370 | /* |
| frank26080115 | 0:bf7b9fba3924 | 371 | * @} |
| frank26080115 | 0:bf7b9fba3924 | 372 | */ |