Frank 26080115
These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
I2S/I2S_DMA/i2s_dma_test.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 i2s_dma_test.c |
| frank26080115 | 0:bf7b9fba3924 | 3 | * @purpose This example describes how to use DMA mode to test the I2S |
| frank26080115 | 0:bf7b9fba3924 | 4 | * driver |
| frank26080115 | 0:bf7b9fba3924 | 5 | * @version 2.0 |
| frank26080115 | 0:bf7b9fba3924 | 6 | * @date 21. May. 2010 |
| frank26080115 | 0:bf7b9fba3924 | 7 | * @author NXP MCU SW Application Team |
| frank26080115 | 0:bf7b9fba3924 | 8 | *--------------------------------------------------------------------- |
| frank26080115 | 0:bf7b9fba3924 | 9 | * Software that is described herein is for illustrative purposes only |
| frank26080115 | 0:bf7b9fba3924 | 10 | * which provides customers with programming information regarding the |
| frank26080115 | 0:bf7b9fba3924 | 11 | * products. This software is supplied "AS IS" without any warranties. |
| frank26080115 | 0:bf7b9fba3924 | 12 | * NXP Semiconductors assumes no responsibility or liability for the |
| frank26080115 | 0:bf7b9fba3924 | 13 | * use of the software, conveys no license or title under any patent, |
| frank26080115 | 0:bf7b9fba3924 | 14 | * copyright, or mask work right to the product. NXP Semiconductors |
| frank26080115 | 0:bf7b9fba3924 | 15 | * reserves the right to make changes in the software without |
| frank26080115 | 0:bf7b9fba3924 | 16 | * notification. NXP Semiconductors also make no representation or |
| frank26080115 | 0:bf7b9fba3924 | 17 | * warranty that such application will be suitable for the specified |
| frank26080115 | 0:bf7b9fba3924 | 18 | * use without further testing or modification. |
| frank26080115 | 0:bf7b9fba3924 | 19 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 20 | #include "lpc17xx_i2s.h" |
| frank26080115 | 0:bf7b9fba3924 | 21 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:bf7b9fba3924 | 22 | #include "lpc17xx_gpdma.h" |
| frank26080115 | 0:bf7b9fba3924 | 23 | #include "debug_frmwrk.h" |
| frank26080115 | 0:bf7b9fba3924 | 24 | #include "lpc17xx_pinsel.h" |
| frank26080115 | 0:bf7b9fba3924 | 25 | |
| frank26080115 | 0:bf7b9fba3924 | 26 | /* Example group ----------------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 27 | /** @defgroup I2S_DMA I2S_DMA |
| frank26080115 | 0:bf7b9fba3924 | 28 | * @ingroup I2S_Examples |
| frank26080115 | 0:bf7b9fba3924 | 29 | * @{ |
| frank26080115 | 0:bf7b9fba3924 | 30 | */ |
| frank26080115 | 0:bf7b9fba3924 | 31 | |
| frank26080115 | 0:bf7b9fba3924 | 32 | /************************** PRIVATE DEFINITIONS *************************/ |
| frank26080115 | 0:bf7b9fba3924 | 33 | /** Max buffer length */ |
| frank26080115 | 0:bf7b9fba3924 | 34 | #define BUFFER_SIZE 0x0A |
| frank26080115 | 0:bf7b9fba3924 | 35 | /** DMA transfer size */ |
| frank26080115 | 0:bf7b9fba3924 | 36 | #define DMA_SIZE 0x100UL |
| frank26080115 | 0:bf7b9fba3924 | 37 | /** DMA Source Address is AHBRAM1_BASE that used for USB RAM purpose, but |
| frank26080115 | 0:bf7b9fba3924 | 38 | * it is not used in this example, so this memory section can be used for general purpose |
| frank26080115 | 0:bf7b9fba3924 | 39 | * memory |
| frank26080115 | 0:bf7b9fba3924 | 40 | */ |
| frank26080115 | 0:bf7b9fba3924 | 41 | #define DMA_SRC LPC_AHBRAM1_BASE |
| frank26080115 | 0:bf7b9fba3924 | 42 | /** DMA Source Address is (AHBRAM1_BASE + DMA_SIZE) that used for USB RAM purpose, but |
| frank26080115 | 0:bf7b9fba3924 | 43 | * it is not used in this example, so this memory section can be used for general purpose |
| frank26080115 | 0:bf7b9fba3924 | 44 | * memory |
| frank26080115 | 0:bf7b9fba3924 | 45 | */ |
| frank26080115 | 0:bf7b9fba3924 | 46 | #define DMA_DST (DMA_SRC+DMA_SIZE) |
| frank26080115 | 0:bf7b9fba3924 | 47 | |
| frank26080115 | 0:bf7b9fba3924 | 48 | /************************** PRIVATE VARIABLES ***********************/ |
| frank26080115 | 0:bf7b9fba3924 | 49 | uint8_t menu[]= |
| frank26080115 | 0:bf7b9fba3924 | 50 | "********************************************************************************\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 51 | "Hello NXP Semiconductors \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 52 | " I2S test DMA mode demo \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 53 | "\t - MCU: LPC17xx \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 54 | "\t - Core: ARM CORTEX-M3 \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 55 | "\t - Communicate via: UART0 - 115200 bps \n\r" |
| frank26080115 | 0:bf7b9fba3924 | 56 | " Use two I2S channels in the same board to transfer data use DMA mode\n\r" |
| frank26080115 | 0:bf7b9fba3924 | 57 | "********************************************************************************\n\r"; |
| frank26080115 | 0:bf7b9fba3924 | 58 | |
| frank26080115 | 0:bf7b9fba3924 | 59 | // Terminal Counter flag for Channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 60 | __IO uint32_t Channel0_TC; |
| frank26080115 | 0:bf7b9fba3924 | 61 | |
| frank26080115 | 0:bf7b9fba3924 | 62 | // Error Counter flag for Channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 63 | __IO uint32_t Channel0_Err; |
| frank26080115 | 0:bf7b9fba3924 | 64 | |
| frank26080115 | 0:bf7b9fba3924 | 65 | // Terminal Counter flag for Channel 1 |
| frank26080115 | 0:bf7b9fba3924 | 66 | __IO uint32_t Channel1_TC; |
| frank26080115 | 0:bf7b9fba3924 | 67 | |
| frank26080115 | 0:bf7b9fba3924 | 68 | // Error Counter flag for Channel 1 |
| frank26080115 | 0:bf7b9fba3924 | 69 | __IO uint32_t Channel1_Err; |
| frank26080115 | 0:bf7b9fba3924 | 70 | |
| frank26080115 | 0:bf7b9fba3924 | 71 | volatile uint32_t *I2STXBuffer = (uint32_t*)(DMA_SRC); |
| frank26080115 | 0:bf7b9fba3924 | 72 | volatile uint32_t *I2SRXBuffer = (uint32_t*)(DMA_DST); |
| 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 Buffer_Init(void); |
| frank26080115 | 0:bf7b9fba3924 | 78 | Bool Buffer_Verify(void); |
| frank26080115 | 0:bf7b9fba3924 | 79 | void print_menu(void); |
| frank26080115 | 0:bf7b9fba3924 | 80 | |
| frank26080115 | 0:bf7b9fba3924 | 81 | /*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 82 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 83 | * @brief GPDMA interrupt handler sub-routine |
| frank26080115 | 0:bf7b9fba3924 | 84 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 85 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 86 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 87 | void DMA_IRQHandler (void) |
| frank26080115 | 0:bf7b9fba3924 | 88 | { |
| frank26080115 | 0:bf7b9fba3924 | 89 | // check GPDMA interrupt on channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 90 | if (GPDMA_IntGetStatus(GPDMA_STAT_INT, 0)){ //check interrupt status on channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 91 | // Check counter terminal status |
| frank26080115 | 0:bf7b9fba3924 | 92 | if(GPDMA_IntGetStatus(GPDMA_STAT_INTTC, 0)){ |
| frank26080115 | 0:bf7b9fba3924 | 93 | // Clear terminate counter Interrupt pending |
| frank26080115 | 0:bf7b9fba3924 | 94 | GPDMA_ClearIntPending (GPDMA_STATCLR_INTTC, 0); |
| frank26080115 | 0:bf7b9fba3924 | 95 | Channel0_TC++; |
| frank26080115 | 0:bf7b9fba3924 | 96 | } |
| frank26080115 | 0:bf7b9fba3924 | 97 | // Check error terminal status |
| frank26080115 | 0:bf7b9fba3924 | 98 | if (GPDMA_IntGetStatus(GPDMA_STAT_INTERR, 0)){ |
| frank26080115 | 0:bf7b9fba3924 | 99 | // Clear error counter Interrupt pending |
| frank26080115 | 0:bf7b9fba3924 | 100 | GPDMA_ClearIntPending (GPDMA_STATCLR_INTERR, 0); |
| frank26080115 | 0:bf7b9fba3924 | 101 | Channel0_Err++; |
| frank26080115 | 0:bf7b9fba3924 | 102 | } |
| frank26080115 | 0:bf7b9fba3924 | 103 | } |
| frank26080115 | 0:bf7b9fba3924 | 104 | if (GPDMA_IntGetStatus(GPDMA_STAT_INT, 1)){ //check interrupt status on channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 105 | // Check counter terminal status |
| frank26080115 | 0:bf7b9fba3924 | 106 | if(GPDMA_IntGetStatus(GPDMA_STAT_INTTC, 1)){ |
| frank26080115 | 0:bf7b9fba3924 | 107 | // Clear terminate counter Interrupt pending |
| frank26080115 | 0:bf7b9fba3924 | 108 | GPDMA_ClearIntPending (GPDMA_STATCLR_INTTC, 1); |
| frank26080115 | 0:bf7b9fba3924 | 109 | Channel1_TC++; |
| frank26080115 | 0:bf7b9fba3924 | 110 | } |
| frank26080115 | 0:bf7b9fba3924 | 111 | // Check error terminal status |
| frank26080115 | 0:bf7b9fba3924 | 112 | if (GPDMA_IntGetStatus(GPDMA_STAT_INTERR,1)){ |
| frank26080115 | 0:bf7b9fba3924 | 113 | // Clear error counter Interrupt pending |
| frank26080115 | 0:bf7b9fba3924 | 114 | GPDMA_ClearIntPending (GPDMA_STATCLR_INTERR, 1); |
| frank26080115 | 0:bf7b9fba3924 | 115 | Channel1_Err++; |
| frank26080115 | 0:bf7b9fba3924 | 116 | } |
| frank26080115 | 0:bf7b9fba3924 | 117 | } |
| frank26080115 | 0:bf7b9fba3924 | 118 | } |
| frank26080115 | 0:bf7b9fba3924 | 119 | |
| frank26080115 | 0:bf7b9fba3924 | 120 | /*-------------------------PRIVATE FUNCTIONS------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 121 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 122 | * @brief Initialize buffer |
| frank26080115 | 0:bf7b9fba3924 | 123 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 124 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 125 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 126 | void Buffer_Init(void) { |
| frank26080115 | 0:bf7b9fba3924 | 127 | uint8_t i; |
| frank26080115 | 0:bf7b9fba3924 | 128 | |
| frank26080115 | 0:bf7b9fba3924 | 129 | for (i = 0; i < BUFFER_SIZE; i++) { |
| frank26080115 | 0:bf7b9fba3924 | 130 | I2STXBuffer[i] = ((i+1)<<16) + i + 1; |
| frank26080115 | 0:bf7b9fba3924 | 131 | I2SRXBuffer[i] = 0; |
| frank26080115 | 0:bf7b9fba3924 | 132 | } |
| frank26080115 | 0:bf7b9fba3924 | 133 | } |
| frank26080115 | 0:bf7b9fba3924 | 134 | |
| frank26080115 | 0:bf7b9fba3924 | 135 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 136 | * @brief Verify buffer |
| frank26080115 | 0:bf7b9fba3924 | 137 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 138 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 139 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 140 | Bool Buffer_Verify(void) { |
| frank26080115 | 0:bf7b9fba3924 | 141 | uint8_t i; |
| frank26080115 | 0:bf7b9fba3924 | 142 | uint32_t *pTX = (uint32_t *) &I2STXBuffer[0]; |
| frank26080115 | 0:bf7b9fba3924 | 143 | uint32_t *pRX = (uint32_t *) &I2SRXBuffer[1]; |
| frank26080115 | 0:bf7b9fba3924 | 144 | |
| frank26080115 | 0:bf7b9fba3924 | 145 | for (i = 0; i < BUFFER_SIZE; i++) { |
| frank26080115 | 0:bf7b9fba3924 | 146 | if (*pTX++ != *pRX++) { |
| frank26080115 | 0:bf7b9fba3924 | 147 | /* Call Error Loop */ |
| frank26080115 | 0:bf7b9fba3924 | 148 | return FALSE; |
| frank26080115 | 0:bf7b9fba3924 | 149 | } |
| frank26080115 | 0:bf7b9fba3924 | 150 | } |
| frank26080115 | 0:bf7b9fba3924 | 151 | return TRUE; |
| frank26080115 | 0:bf7b9fba3924 | 152 | } |
| frank26080115 | 0:bf7b9fba3924 | 153 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 154 | * @brief Print menu screen |
| frank26080115 | 0:bf7b9fba3924 | 155 | * @param[in] none |
| frank26080115 | 0:bf7b9fba3924 | 156 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 157 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 158 | void print_menu(void) |
| frank26080115 | 0:bf7b9fba3924 | 159 | { |
| frank26080115 | 0:bf7b9fba3924 | 160 | _DBG_(menu); |
| frank26080115 | 0:bf7b9fba3924 | 161 | } |
| frank26080115 | 0:bf7b9fba3924 | 162 | |
| frank26080115 | 0:bf7b9fba3924 | 163 | |
| frank26080115 | 0:bf7b9fba3924 | 164 | /*-------------------------MAIN FUNCTION------------------------------*/ |
| frank26080115 | 0:bf7b9fba3924 | 165 | /*********************************************************************//** |
| frank26080115 | 0:bf7b9fba3924 | 166 | * @brief c_entry: Main program body |
| frank26080115 | 0:bf7b9fba3924 | 167 | * @param[in] None |
| frank26080115 | 0:bf7b9fba3924 | 168 | * @return int |
| frank26080115 | 0:bf7b9fba3924 | 169 | **********************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 170 | int c_entry(void) |
| frank26080115 | 0:bf7b9fba3924 | 171 | { |
| frank26080115 | 0:bf7b9fba3924 | 172 | uint32_t i; |
| frank26080115 | 0:bf7b9fba3924 | 173 | GPDMA_Channel_CFG_Type GPDMACfg; |
| frank26080115 | 0:bf7b9fba3924 | 174 | I2S_MODEConf_Type I2S_ClkConfig; |
| frank26080115 | 0:bf7b9fba3924 | 175 | I2S_CFG_Type I2S_ConfigStruct; |
| frank26080115 | 0:bf7b9fba3924 | 176 | I2S_DMAConf_Type I2S_DMAStruct; |
| frank26080115 | 0:bf7b9fba3924 | 177 | PINSEL_CFG_Type PinCfg; |
| frank26080115 | 0:bf7b9fba3924 | 178 | |
| frank26080115 | 0:bf7b9fba3924 | 179 | /* Initialize debug via UART0 |
| frank26080115 | 0:bf7b9fba3924 | 180 | * 115200bps |
| frank26080115 | 0:bf7b9fba3924 | 181 | * 8 data bit |
| frank26080115 | 0:bf7b9fba3924 | 182 | * No parity |
| frank26080115 | 0:bf7b9fba3924 | 183 | * 1 stop bit |
| frank26080115 | 0:bf7b9fba3924 | 184 | * No flow control |
| frank26080115 | 0:bf7b9fba3924 | 185 | */ |
| frank26080115 | 0:bf7b9fba3924 | 186 | debug_frmwrk_init(); |
| frank26080115 | 0:bf7b9fba3924 | 187 | |
| frank26080115 | 0:bf7b9fba3924 | 188 | //print menu screen |
| frank26080115 | 0:bf7b9fba3924 | 189 | print_menu(); |
| frank26080115 | 0:bf7b9fba3924 | 190 | |
| frank26080115 | 0:bf7b9fba3924 | 191 | //Initialize buffer |
| frank26080115 | 0:bf7b9fba3924 | 192 | Buffer_Init(); |
| frank26080115 | 0:bf7b9fba3924 | 193 | |
| frank26080115 | 0:bf7b9fba3924 | 194 | _DBG_("Press '1' to initialize buffer..."); |
| frank26080115 | 0:bf7b9fba3924 | 195 | while(_DG !='1'); |
| frank26080115 | 0:bf7b9fba3924 | 196 | _DBG_("Transmit Buffer init: ..."); |
| frank26080115 | 0:bf7b9fba3924 | 197 | for(i=0;i<BUFFER_SIZE;i++) |
| frank26080115 | 0:bf7b9fba3924 | 198 | { |
| frank26080115 | 0:bf7b9fba3924 | 199 | _DBH32(I2STXBuffer[i]);_DBG_(""); |
| frank26080115 | 0:bf7b9fba3924 | 200 | } |
| frank26080115 | 0:bf7b9fba3924 | 201 | _DBG_("Receive Buffer init: ..."); |
| frank26080115 | 0:bf7b9fba3924 | 202 | for(i=0;i<BUFFER_SIZE;i++) |
| frank26080115 | 0:bf7b9fba3924 | 203 | { |
| frank26080115 | 0:bf7b9fba3924 | 204 | _DBH32(I2SRXBuffer[i]);_DBG_(""); |
| frank26080115 | 0:bf7b9fba3924 | 205 | } |
| frank26080115 | 0:bf7b9fba3924 | 206 | |
| frank26080115 | 0:bf7b9fba3924 | 207 | /* Pin configuration: |
| frank26080115 | 0:bf7b9fba3924 | 208 | * Assign: - P0.4 as I2SRX_CLK |
| frank26080115 | 0:bf7b9fba3924 | 209 | * - P0.5 as I2SRX_WS |
| frank26080115 | 0:bf7b9fba3924 | 210 | * - P0.6 as I2SRX_SDA |
| frank26080115 | 0:bf7b9fba3924 | 211 | * - P0.7 as I2STX_CLK |
| frank26080115 | 0:bf7b9fba3924 | 212 | * - P0.8 as I2STX_WS |
| frank26080115 | 0:bf7b9fba3924 | 213 | * - P0.9 as I2STX_SDA |
| frank26080115 | 0:bf7b9fba3924 | 214 | */ |
| frank26080115 | 0:bf7b9fba3924 | 215 | PinCfg.Funcnum = 1; |
| frank26080115 | 0:bf7b9fba3924 | 216 | PinCfg.OpenDrain = 0; |
| frank26080115 | 0:bf7b9fba3924 | 217 | PinCfg.Pinmode = 0; |
| frank26080115 | 0:bf7b9fba3924 | 218 | PinCfg.Pinnum = 4; |
| frank26080115 | 0:bf7b9fba3924 | 219 | PinCfg.Portnum = 0; |
| frank26080115 | 0:bf7b9fba3924 | 220 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 221 | PinCfg.Pinnum = 5; |
| frank26080115 | 0:bf7b9fba3924 | 222 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 223 | PinCfg.Pinnum = 6; |
| frank26080115 | 0:bf7b9fba3924 | 224 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 225 | PinCfg.Pinnum = 7; |
| frank26080115 | 0:bf7b9fba3924 | 226 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 227 | PinCfg.Pinnum = 8; |
| frank26080115 | 0:bf7b9fba3924 | 228 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 229 | PinCfg.Pinnum = 9; |
| frank26080115 | 0:bf7b9fba3924 | 230 | PINSEL_ConfigPin(&PinCfg); |
| frank26080115 | 0:bf7b9fba3924 | 231 | |
| frank26080115 | 0:bf7b9fba3924 | 232 | /* Initialize I2S */ |
| frank26080115 | 0:bf7b9fba3924 | 233 | I2S_Init(LPC_I2S); |
| frank26080115 | 0:bf7b9fba3924 | 234 | |
| frank26080115 | 0:bf7b9fba3924 | 235 | //Setup for I2S: RX is similar with TX |
| frank26080115 | 0:bf7b9fba3924 | 236 | /* setup: |
| frank26080115 | 0:bf7b9fba3924 | 237 | * - wordwidth: 16 bits |
| frank26080115 | 0:bf7b9fba3924 | 238 | * - stereo mode |
| frank26080115 | 0:bf7b9fba3924 | 239 | * - master mode for I2S_TX and slave for I2S_RX |
| frank26080115 | 0:bf7b9fba3924 | 240 | * - ws_halfperiod is 31 |
| frank26080115 | 0:bf7b9fba3924 | 241 | * - not use mute mode |
| frank26080115 | 0:bf7b9fba3924 | 242 | * - use reset and stop mode |
| frank26080115 | 0:bf7b9fba3924 | 243 | * - select the fractional rate divider clock output as the source, |
| frank26080115 | 0:bf7b9fba3924 | 244 | * - disable 4-pin mode |
| frank26080115 | 0:bf7b9fba3924 | 245 | * - MCLK ouput is disable |
| frank26080115 | 0:bf7b9fba3924 | 246 | * - Frequency = 44.1 kHz |
| frank26080115 | 0:bf7b9fba3924 | 247 | * Because we use mode I2STXMODE[3:0]= 0000, I2SDAO[5]=0 and |
| frank26080115 | 0:bf7b9fba3924 | 248 | * I2SRX[3:0]=0000, I2SDAI[5] = 1. So we have I2SRX_CLK = I2STX_CLK |
| frank26080115 | 0:bf7b9fba3924 | 249 | * --> I2SRXBITRATE = 1 (not divide TXCLK to produce RXCLK) |
| frank26080115 | 0:bf7b9fba3924 | 250 | */ |
| frank26080115 | 0:bf7b9fba3924 | 251 | |
| frank26080115 | 0:bf7b9fba3924 | 252 | /* Audio Config*/ |
| frank26080115 | 0:bf7b9fba3924 | 253 | I2S_ConfigStruct.wordwidth = I2S_WORDWIDTH_16; |
| frank26080115 | 0:bf7b9fba3924 | 254 | I2S_ConfigStruct.mono = I2S_STEREO; |
| frank26080115 | 0:bf7b9fba3924 | 255 | I2S_ConfigStruct.stop = I2S_STOP_ENABLE; |
| frank26080115 | 0:bf7b9fba3924 | 256 | I2S_ConfigStruct.reset = I2S_RESET_ENABLE; |
| frank26080115 | 0:bf7b9fba3924 | 257 | I2S_ConfigStruct.ws_sel = I2S_MASTER_MODE; |
| frank26080115 | 0:bf7b9fba3924 | 258 | I2S_ConfigStruct.mute = I2S_MUTE_DISABLE; |
| frank26080115 | 0:bf7b9fba3924 | 259 | I2S_Config(LPC_I2S,I2S_TX_MODE,&I2S_ConfigStruct); |
| frank26080115 | 0:bf7b9fba3924 | 260 | |
| frank26080115 | 0:bf7b9fba3924 | 261 | I2S_ConfigStruct.ws_sel = I2S_SLAVE_MODE; |
| frank26080115 | 0:bf7b9fba3924 | 262 | I2S_Config(LPC_I2S,I2S_RX_MODE,&I2S_ConfigStruct); |
| frank26080115 | 0:bf7b9fba3924 | 263 | |
| frank26080115 | 0:bf7b9fba3924 | 264 | /* Clock Mode Config*/ |
| frank26080115 | 0:bf7b9fba3924 | 265 | I2S_ClkConfig.clksel = I2S_CLKSEL_FRDCLK; |
| frank26080115 | 0:bf7b9fba3924 | 266 | I2S_ClkConfig.fpin = I2S_4PIN_DISABLE; |
| frank26080115 | 0:bf7b9fba3924 | 267 | I2S_ClkConfig.mcena = I2S_MCLK_DISABLE; |
| frank26080115 | 0:bf7b9fba3924 | 268 | I2S_ModeConfig(LPC_I2S,&I2S_ClkConfig,I2S_TX_MODE); |
| frank26080115 | 0:bf7b9fba3924 | 269 | I2S_ModeConfig(LPC_I2S,&I2S_ClkConfig,I2S_RX_MODE); |
| frank26080115 | 0:bf7b9fba3924 | 270 | |
| frank26080115 | 0:bf7b9fba3924 | 271 | /* Set up frequency and bit rate*/ |
| frank26080115 | 0:bf7b9fba3924 | 272 | I2S_FreqConfig(LPC_I2S, 44100, I2S_TX_MODE); |
| frank26080115 | 0:bf7b9fba3924 | 273 | I2S_SetBitRate(LPC_I2S, 0, I2S_RX_MODE); |
| frank26080115 | 0:bf7b9fba3924 | 274 | _DBG_("Press '2' to initialize DMA..."); |
| frank26080115 | 0:bf7b9fba3924 | 275 | while(_DG !='2'); |
| frank26080115 | 0:bf7b9fba3924 | 276 | /* GPDMA Interrupt configuration section ------------------------------------------------- */ |
| frank26080115 | 0:bf7b9fba3924 | 277 | |
| frank26080115 | 0:bf7b9fba3924 | 278 | /* Initialize GPDMA controller */ |
| frank26080115 | 0:bf7b9fba3924 | 279 | GPDMA_Init(); |
| frank26080115 | 0:bf7b9fba3924 | 280 | LPC_GPDMA->DMACConfig = 0x01; |
| frank26080115 | 0:bf7b9fba3924 | 281 | |
| frank26080115 | 0:bf7b9fba3924 | 282 | /* Setting GPDMA interrupt */ |
| frank26080115 | 0:bf7b9fba3924 | 283 | // Disable interrupt for DMA |
| frank26080115 | 0:bf7b9fba3924 | 284 | NVIC_DisableIRQ (DMA_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 285 | /* preemption = 1, sub-priority = 1 */ |
| frank26080115 | 0:bf7b9fba3924 | 286 | NVIC_SetPriority(DMA_IRQn, ((0x01<<3)|0x01)); |
| frank26080115 | 0:bf7b9fba3924 | 287 | |
| frank26080115 | 0:bf7b9fba3924 | 288 | /* |
| frank26080115 | 0:bf7b9fba3924 | 289 | * Configure GPDMA channel 0 ------------------------------------------------------------- |
| frank26080115 | 0:bf7b9fba3924 | 290 | * Used for I2S Transmit |
| frank26080115 | 0:bf7b9fba3924 | 291 | */ |
| frank26080115 | 0:bf7b9fba3924 | 292 | // Setup GPDMA channel -------------------------------- |
| frank26080115 | 0:bf7b9fba3924 | 293 | // channel 0 |
| frank26080115 | 0:bf7b9fba3924 | 294 | GPDMACfg.ChannelNum = 0; |
| frank26080115 | 0:bf7b9fba3924 | 295 | // Source memory |
| frank26080115 | 0:bf7b9fba3924 | 296 | GPDMACfg.SrcMemAddr = DMA_SRC; |
| frank26080115 | 0:bf7b9fba3924 | 297 | // Destination memory |
| frank26080115 | 0:bf7b9fba3924 | 298 | GPDMACfg.DstMemAddr = 0; |
| frank26080115 | 0:bf7b9fba3924 | 299 | // Transfer size |
| frank26080115 | 0:bf7b9fba3924 | 300 | GPDMACfg.TransferSize = BUFFER_SIZE; |
| frank26080115 | 0:bf7b9fba3924 | 301 | // Transfer width - unused |
| frank26080115 | 0:bf7b9fba3924 | 302 | GPDMACfg.TransferWidth = 0; |
| frank26080115 | 0:bf7b9fba3924 | 303 | // Transfer type |
| frank26080115 | 0:bf7b9fba3924 | 304 | GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_M2P; |
| frank26080115 | 0:bf7b9fba3924 | 305 | // Source connection |
| frank26080115 | 0:bf7b9fba3924 | 306 | GPDMACfg.SrcConn = 0; |
| frank26080115 | 0:bf7b9fba3924 | 307 | // Destination connection - unused |
| frank26080115 | 0:bf7b9fba3924 | 308 | GPDMACfg.DstConn = GPDMA_CONN_I2S_Channel_0; |
| frank26080115 | 0:bf7b9fba3924 | 309 | // Linker List Item - unused |
| frank26080115 | 0:bf7b9fba3924 | 310 | GPDMACfg.DMALLI = 0; |
| frank26080115 | 0:bf7b9fba3924 | 311 | GPDMA_Setup(&GPDMACfg); |
| frank26080115 | 0:bf7b9fba3924 | 312 | _DBG_("DMA Channel 0 setting finised..."); |
| frank26080115 | 0:bf7b9fba3924 | 313 | /* Reset terminal counter */ |
| frank26080115 | 0:bf7b9fba3924 | 314 | Channel0_TC = 0; |
| frank26080115 | 0:bf7b9fba3924 | 315 | /* Reset Error counter */ |
| frank26080115 | 0:bf7b9fba3924 | 316 | Channel0_Err = 0; |
| frank26080115 | 0:bf7b9fba3924 | 317 | |
| frank26080115 | 0:bf7b9fba3924 | 318 | /* |
| frank26080115 | 0:bf7b9fba3924 | 319 | * Configure GPDMA channel 1 ------------------------------------------------------------- |
| frank26080115 | 0:bf7b9fba3924 | 320 | * Used for UART0 Receive |
| frank26080115 | 0:bf7b9fba3924 | 321 | */ |
| frank26080115 | 0:bf7b9fba3924 | 322 | // Setup GPDMA channel -------------------------------- |
| frank26080115 | 0:bf7b9fba3924 | 323 | // channel 1 |
| frank26080115 | 0:bf7b9fba3924 | 324 | GPDMACfg.ChannelNum = 1; |
| frank26080115 | 0:bf7b9fba3924 | 325 | // Source memory - unused |
| frank26080115 | 0:bf7b9fba3924 | 326 | GPDMACfg.SrcMemAddr = 0; |
| frank26080115 | 0:bf7b9fba3924 | 327 | // Destination memory |
| frank26080115 | 0:bf7b9fba3924 | 328 | GPDMACfg.DstMemAddr = DMA_DST; |
| frank26080115 | 0:bf7b9fba3924 | 329 | // Transfer size |
| frank26080115 | 0:bf7b9fba3924 | 330 | GPDMACfg.TransferSize = BUFFER_SIZE+1; |
| frank26080115 | 0:bf7b9fba3924 | 331 | // Transfer width - unused |
| frank26080115 | 0:bf7b9fba3924 | 332 | GPDMACfg.TransferWidth = 0; |
| frank26080115 | 0:bf7b9fba3924 | 333 | // Transfer type |
| frank26080115 | 0:bf7b9fba3924 | 334 | GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_P2M; |
| frank26080115 | 0:bf7b9fba3924 | 335 | // Source connection - unused |
| frank26080115 | 0:bf7b9fba3924 | 336 | GPDMACfg.SrcConn = GPDMA_CONN_I2S_Channel_1; |
| frank26080115 | 0:bf7b9fba3924 | 337 | // Destination connection |
| frank26080115 | 0:bf7b9fba3924 | 338 | GPDMACfg.DstConn = 0; |
| frank26080115 | 0:bf7b9fba3924 | 339 | // Linker List Item - unused |
| frank26080115 | 0:bf7b9fba3924 | 340 | GPDMACfg.DMALLI = 0; |
| frank26080115 | 0:bf7b9fba3924 | 341 | GPDMA_Setup(&GPDMACfg); |
| frank26080115 | 0:bf7b9fba3924 | 342 | _DBG_("DMA Channel 1 setting finised..."); |
| frank26080115 | 0:bf7b9fba3924 | 343 | /* Reset terminal counter */ |
| frank26080115 | 0:bf7b9fba3924 | 344 | Channel1_TC = 0; |
| frank26080115 | 0:bf7b9fba3924 | 345 | /* Reset Error counter */ |
| frank26080115 | 0:bf7b9fba3924 | 346 | Channel1_Err = 0; |
| frank26080115 | 0:bf7b9fba3924 | 347 | |
| frank26080115 | 0:bf7b9fba3924 | 348 | // Enable GPDMA channel 0 & 1 |
| frank26080115 | 0:bf7b9fba3924 | 349 | GPDMA_ChannelCmd(0, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 350 | GPDMA_ChannelCmd(1, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 351 | |
| frank26080115 | 0:bf7b9fba3924 | 352 | // Enable interrupt for DMA |
| frank26080115 | 0:bf7b9fba3924 | 353 | NVIC_EnableIRQ (DMA_IRQn); |
| frank26080115 | 0:bf7b9fba3924 | 354 | _DBG_("Press '3' to start I2S transfer process..."); |
| frank26080115 | 0:bf7b9fba3924 | 355 | while(_DG !='3'); |
| frank26080115 | 0:bf7b9fba3924 | 356 | _DBG_("I2S Start..."); |
| frank26080115 | 0:bf7b9fba3924 | 357 | |
| frank26080115 | 0:bf7b9fba3924 | 358 | I2S_DMAStruct.DMAIndex = I2S_DMA_2; |
| frank26080115 | 0:bf7b9fba3924 | 359 | I2S_DMAStruct.depth = 8; |
| frank26080115 | 0:bf7b9fba3924 | 360 | I2S_DMAConfig(LPC_I2S, &I2S_DMAStruct, I2S_RX_MODE); |
| frank26080115 | 0:bf7b9fba3924 | 361 | I2S_DMAStruct.DMAIndex = I2S_DMA_1; |
| frank26080115 | 0:bf7b9fba3924 | 362 | I2S_DMAStruct.depth = 1; |
| frank26080115 | 0:bf7b9fba3924 | 363 | I2S_DMAConfig(LPC_I2S, &I2S_DMAStruct, I2S_TX_MODE); |
| frank26080115 | 0:bf7b9fba3924 | 364 | |
| frank26080115 | 0:bf7b9fba3924 | 365 | I2S_Start(LPC_I2S); |
| frank26080115 | 0:bf7b9fba3924 | 366 | |
| frank26080115 | 0:bf7b9fba3924 | 367 | I2S_DMACmd(LPC_I2S, I2S_DMA_2, I2S_RX_MODE, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 368 | I2S_DMACmd(LPC_I2S, I2S_DMA_1, I2S_TX_MODE, ENABLE); |
| frank26080115 | 0:bf7b9fba3924 | 369 | |
| frank26080115 | 0:bf7b9fba3924 | 370 | while ((Channel0_TC == 0)||(Channel1_TC == 0) ); |
| frank26080115 | 0:bf7b9fba3924 | 371 | |
| frank26080115 | 0:bf7b9fba3924 | 372 | _DBG_("I2S Finish..."); |
| frank26080115 | 0:bf7b9fba3924 | 373 | _DBG_("Receive Buffer data: ..."); |
| frank26080115 | 0:bf7b9fba3924 | 374 | for(i=0;i<BUFFER_SIZE+1;i++) |
| frank26080115 | 0:bf7b9fba3924 | 375 | { |
| frank26080115 | 0:bf7b9fba3924 | 376 | _DBH32(I2SRXBuffer[i]); |
| frank26080115 | 0:bf7b9fba3924 | 377 | if(I2SRXBuffer[i]==0) |
| frank26080115 | 0:bf7b9fba3924 | 378 | { |
| frank26080115 | 0:bf7b9fba3924 | 379 | _DBG_(" ->Dummy data"); |
| frank26080115 | 0:bf7b9fba3924 | 380 | } |
| frank26080115 | 0:bf7b9fba3924 | 381 | else _DBG_(""); |
| frank26080115 | 0:bf7b9fba3924 | 382 | } |
| frank26080115 | 0:bf7b9fba3924 | 383 | I2S_DeInit(LPC_I2S); |
| frank26080115 | 0:bf7b9fba3924 | 384 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 385 | return 1; |
| frank26080115 | 0:bf7b9fba3924 | 386 | } |
| frank26080115 | 0:bf7b9fba3924 | 387 | |
| frank26080115 | 0:bf7b9fba3924 | 388 | /* With ARM and GHS toolsets, the entry point is main() - this will |
| frank26080115 | 0:bf7b9fba3924 | 389 | allow the linker to generate wrapper code to setup stacks, allocate |
| frank26080115 | 0:bf7b9fba3924 | 390 | heap area, and initialize and copy code and data segments. For GNU |
| frank26080115 | 0:bf7b9fba3924 | 391 | toolsets, the entry point is through __start() in the crt0_gnu.asm |
| frank26080115 | 0:bf7b9fba3924 | 392 | file, and that startup code will setup stacks and data */ |
| frank26080115 | 0:bf7b9fba3924 | 393 | int main(void) |
| frank26080115 | 0:bf7b9fba3924 | 394 | { |
| frank26080115 | 0:bf7b9fba3924 | 395 | return c_entry(); |
| frank26080115 | 0:bf7b9fba3924 | 396 | } |
| frank26080115 | 0:bf7b9fba3924 | 397 | |
| frank26080115 | 0:bf7b9fba3924 | 398 | #ifdef DEBUG |
| frank26080115 | 0:bf7b9fba3924 | 399 | /******************************************************************************* |
| frank26080115 | 0:bf7b9fba3924 | 400 | * @brief Reports the name of the source file and the source line number |
| frank26080115 | 0:bf7b9fba3924 | 401 | * where the CHECK_PARAM error has occurred. |
| frank26080115 | 0:bf7b9fba3924 | 402 | * @param[in] file Pointer to the source file name |
| frank26080115 | 0:bf7b9fba3924 | 403 | * @param[in] line assert_param error line source number |
| frank26080115 | 0:bf7b9fba3924 | 404 | * @return None |
| frank26080115 | 0:bf7b9fba3924 | 405 | *******************************************************************************/ |
| frank26080115 | 0:bf7b9fba3924 | 406 | void check_failed(uint8_t *file, uint32_t line) |
| frank26080115 | 0:bf7b9fba3924 | 407 | { |
| frank26080115 | 0:bf7b9fba3924 | 408 | /* User can add his own implementation to report the file name and line number, |
| frank26080115 | 0:bf7b9fba3924 | 409 | ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
| frank26080115 | 0:bf7b9fba3924 | 410 | |
| frank26080115 | 0:bf7b9fba3924 | 411 | /* Infinite loop */ |
| frank26080115 | 0:bf7b9fba3924 | 412 | while(1); |
| frank26080115 | 0:bf7b9fba3924 | 413 | } |
| frank26080115 | 0:bf7b9fba3924 | 414 | #endif |
| frank26080115 | 0:bf7b9fba3924 | 415 | |
| frank26080115 | 0:bf7b9fba3924 | 416 | /* |
| frank26080115 | 0:bf7b9fba3924 | 417 | * @} |
| frank26080115 | 0:bf7b9fba3924 | 418 | */ |