xeye_ atsu / Mbed 2 deprecated I2S_AIC23B_RiceGolomb

パラメータを適応変化させる事により圧縮率を向上させた動的ライス・ゴロム符号を利用した可逆圧縮方式。圧縮ソフト、圧縮率のMATLABシミュレーションは詳細はInterface誌2011年8月号に掲載されるRX62Nマイコン連動特集にて掲載予定。

Dependencies:   mbed

I2S_Example/lpc17xx_i2s.c@0:d920d64db582, 2011-03-30 (annotated)

Committer:
lynxeyed_atsu
Date:
Wed Mar 30 06:05:24 2011 +0000
Revision:
0:d920d64db582
alpha

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lynxeyed_atsu 0:d920d64db582 1 /***********************************************************************//**
lynxeyed_atsu 0:d920d64db582 2 * @file lpc17xx_i2s.c
lynxeyed_atsu 0:d920d64db582 3 * @brief Contains all functions support for I2S firmware library on LPC17xx
lynxeyed_atsu 0:d920d64db582 4 * @version 3.0
lynxeyed_atsu 0:d920d64db582 5 * @date 18. June. 2010
lynxeyed_atsu 0:d920d64db582 6 * @author NXP MCU SW Application Team
lynxeyed_atsu 0:d920d64db582 7 **************************************************************************
lynxeyed_atsu 0:d920d64db582 8 * Software that is described herein is for illustrative purposes only
lynxeyed_atsu 0:d920d64db582 9 * which provides customers with programming information regarding the
lynxeyed_atsu 0:d920d64db582 10 * products. This software is supplied "AS IS" without any warranties.
lynxeyed_atsu 0:d920d64db582 11 * NXP Semiconductors assumes no responsibility or liability for the
lynxeyed_atsu 0:d920d64db582 12 * use of the software, conveys no license or title under any patent,
lynxeyed_atsu 0:d920d64db582 13 * copyright, or mask work right to the product. NXP Semiconductors
lynxeyed_atsu 0:d920d64db582 14 * reserves the right to make changes in the software without
lynxeyed_atsu 0:d920d64db582 15 * notification. NXP Semiconductors also make no representation or
lynxeyed_atsu 0:d920d64db582 16 * warranty that such application will be suitable for the specified
lynxeyed_atsu 0:d920d64db582 17 * use without further testing or modification.
lynxeyed_atsu 0:d920d64db582 18 **********************************************************************/
lynxeyed_atsu 0:d920d64db582 19
lynxeyed_atsu 0:d920d64db582 20 /* Peripheral group ----------------------------------------------------------- */
lynxeyed_atsu 0:d920d64db582 21 /** @addtogroup I2S
lynxeyed_atsu 0:d920d64db582 22 * @{
lynxeyed_atsu 0:d920d64db582 23 */
lynxeyed_atsu 0:d920d64db582 24
lynxeyed_atsu 0:d920d64db582 25 /* Includes ------------------------------------------------------------------- */
lynxeyed_atsu 0:d920d64db582 26 //#include "mbed.h"
lynxeyed_atsu 0:d920d64db582 27 #include "lpc17xx_i2s.h"
lynxeyed_atsu 0:d920d64db582 28 #include "lpc17xx_clkpwr.h"
lynxeyed_atsu 0:d920d64db582 29 #include "mbed.h"
lynxeyed_atsu 0:d920d64db582 30
lynxeyed_atsu 0:d920d64db582 31
lynxeyed_atsu 0:d920d64db582 32 /* If this source file built with example, the LPC17xx FW library configuration
lynxeyed_atsu 0:d920d64db582 33 * file in each example directory ("lpc17xx_libcfg.h") must be included,
lynxeyed_atsu 0:d920d64db582 34 * otherwise the default FW library configuration file must be included instead
lynxeyed_atsu 0:d920d64db582 35 */
lynxeyed_atsu 0:d920d64db582 36 #ifdef __BUILD_WITH_EXAMPLE__
lynxeyed_atsu 0:d920d64db582 37 #include "lpc17xx_libcfg.h"
lynxeyed_atsu 0:d920d64db582 38 #else
lynxeyed_atsu 0:d920d64db582 39 #include "lpc17xx_libcfg_default.h"
lynxeyed_atsu 0:d920d64db582 40 #endif /* __BUILD_WITH_EXAMPLE__ */
lynxeyed_atsu 0:d920d64db582 41
lynxeyed_atsu 0:d920d64db582 42
lynxeyed_atsu 0:d920d64db582 43 #ifdef _I2S
lynxeyed_atsu 0:d920d64db582 44
lynxeyed_atsu 0:d920d64db582 45 /* Private Functions ---------------------------------------------------------- */
lynxeyed_atsu 0:d920d64db582 46
lynxeyed_atsu 0:d920d64db582 47 static uint8_t i2s_GetWordWidth(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode);
lynxeyed_atsu 0:d920d64db582 48 static uint8_t i2s_GetChannel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode);
lynxeyed_atsu 0:d920d64db582 49
lynxeyed_atsu 0:d920d64db582 50 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 51 * @brief Get I2S wordwidth value
lynxeyed_atsu 0:d920d64db582 52 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 53 * @param[in] TRMode is the I2S mode, should be:
lynxeyed_atsu 0:d920d64db582 54 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 55 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 56 * @return The wordwidth value, should be: 8,16 or 32
lynxeyed_atsu 0:d920d64db582 57 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 58 static uint8_t i2s_GetWordWidth(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
lynxeyed_atsu 0:d920d64db582 59 uint8_t value;
lynxeyed_atsu 0:d920d64db582 60
lynxeyed_atsu 0:d920d64db582 61 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 62 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 63
lynxeyed_atsu 0:d920d64db582 64 if (TRMode == I2S_TX_MODE) {
lynxeyed_atsu 0:d920d64db582 65 value = (I2Sx->I2SDAO) & 0x03; /* get wordwidth bit */
lynxeyed_atsu 0:d920d64db582 66 } else {
lynxeyed_atsu 0:d920d64db582 67 value = (I2Sx->I2SDAI) & 0x03; /* get wordwidth bit */
lynxeyed_atsu 0:d920d64db582 68 }
lynxeyed_atsu 0:d920d64db582 69 switch (value) {
lynxeyed_atsu 0:d920d64db582 70 case I2S_WORDWIDTH_8:
lynxeyed_atsu 0:d920d64db582 71 return 8;
lynxeyed_atsu 0:d920d64db582 72 case I2S_WORDWIDTH_16:
lynxeyed_atsu 0:d920d64db582 73 return 16;
lynxeyed_atsu 0:d920d64db582 74 default:
lynxeyed_atsu 0:d920d64db582 75 return 32;
lynxeyed_atsu 0:d920d64db582 76 }
lynxeyed_atsu 0:d920d64db582 77 }
lynxeyed_atsu 0:d920d64db582 78
lynxeyed_atsu 0:d920d64db582 79 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 80 * @brief Get I2S channel value
lynxeyed_atsu 0:d920d64db582 81 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 82 * @param[in] TRMode is the I2S mode, should be:
lynxeyed_atsu 0:d920d64db582 83 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 84 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 85 * @return The channel value, should be: 1(mono) or 2(stereo)
lynxeyed_atsu 0:d920d64db582 86 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 87 static uint8_t i2s_GetChannel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
lynxeyed_atsu 0:d920d64db582 88 uint8_t value;
lynxeyed_atsu 0:d920d64db582 89
lynxeyed_atsu 0:d920d64db582 90 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 91 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 92
lynxeyed_atsu 0:d920d64db582 93 if (TRMode == I2S_TX_MODE) {
lynxeyed_atsu 0:d920d64db582 94 value = (I2Sx->I2SDAO) & 0x04; /* get bit[2] */
lynxeyed_atsu 0:d920d64db582 95 } else {
lynxeyed_atsu 0:d920d64db582 96 value = (I2Sx->I2SDAI) & 0x04; /* get bit[2] */
lynxeyed_atsu 0:d920d64db582 97 }
lynxeyed_atsu 0:d920d64db582 98 if(value == I2S_MONO) return 1;
lynxeyed_atsu 0:d920d64db582 99 return 2;
lynxeyed_atsu 0:d920d64db582 100 }
lynxeyed_atsu 0:d920d64db582 101
lynxeyed_atsu 0:d920d64db582 102 /* End of Private Functions --------------------------------------------------- */
lynxeyed_atsu 0:d920d64db582 103
lynxeyed_atsu 0:d920d64db582 104
lynxeyed_atsu 0:d920d64db582 105 /* Public Functions ----------------------------------------------------------- */
lynxeyed_atsu 0:d920d64db582 106 /** @addtogroup I2S_Public_Functions
lynxeyed_atsu 0:d920d64db582 107 * @{
lynxeyed_atsu 0:d920d64db582 108 */
lynxeyed_atsu 0:d920d64db582 109
lynxeyed_atsu 0:d920d64db582 110 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 111 * @brief Initialize I2S
lynxeyed_atsu 0:d920d64db582 112 * - Turn on power and clock
lynxeyed_atsu 0:d920d64db582 113 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 114 * @return none
lynxeyed_atsu 0:d920d64db582 115 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 116 void I2S_Init(LPC_I2S_TypeDef *I2Sx) {
lynxeyed_atsu 0:d920d64db582 117 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 118
lynxeyed_atsu 0:d920d64db582 119 // Turn on power and clock
lynxeyed_atsu 0:d920d64db582 120 CLKPWR_ConfigPPWR(CLKPWR_PCONP_PCI2S, ENABLE);
lynxeyed_atsu 0:d920d64db582 121 LPC_I2S->I2SDAI = LPC_I2S->I2SDAO = 0x00;
lynxeyed_atsu 0:d920d64db582 122 }
lynxeyed_atsu 0:d920d64db582 123
lynxeyed_atsu 0:d920d64db582 124 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 125 * @brief Configuration I2S, setting:
lynxeyed_atsu 0:d920d64db582 126 * - master/slave mode
lynxeyed_atsu 0:d920d64db582 127 * - wordwidth value
lynxeyed_atsu 0:d920d64db582 128 * - channel mode
lynxeyed_atsu 0:d920d64db582 129 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 130 * @param[in] TRMode transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 131 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 132 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 133 * @param[in] ConfigStruct pointer to I2S_CFG_Type structure
lynxeyed_atsu 0:d920d64db582 134 * which will be initialized.
lynxeyed_atsu 0:d920d64db582 135 * @return none
lynxeyed_atsu 0:d920d64db582 136 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 137 void I2S_Config(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, I2S_CFG_Type* ConfigStruct)
lynxeyed_atsu 0:d920d64db582 138 {
lynxeyed_atsu 0:d920d64db582 139 uint32_t bps, config;
lynxeyed_atsu 0:d920d64db582 140
lynxeyed_atsu 0:d920d64db582 141 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 142
lynxeyed_atsu 0:d920d64db582 143 CHECK_PARAM(PARAM_I2S_WORDWIDTH(ConfigStruct->wordwidth));
lynxeyed_atsu 0:d920d64db582 144 CHECK_PARAM(PARAM_I2S_CHANNEL(ConfigStruct->mono));
lynxeyed_atsu 0:d920d64db582 145 CHECK_PARAM(PARAM_I2S_STOP(ConfigStruct->stop));
lynxeyed_atsu 0:d920d64db582 146 CHECK_PARAM(PARAM_I2S_RESET(ConfigStruct->reset));
lynxeyed_atsu 0:d920d64db582 147 CHECK_PARAM(PARAM_I2S_WS_SEL(ConfigStruct->ws_sel));
lynxeyed_atsu 0:d920d64db582 148 CHECK_PARAM(PARAM_I2S_MUTE(ConfigStruct->mute));
lynxeyed_atsu 0:d920d64db582 149
lynxeyed_atsu 0:d920d64db582 150 /* Setup clock */
lynxeyed_atsu 0:d920d64db582 151 bps = (ConfigStruct->wordwidth +1)*8;
lynxeyed_atsu 0:d920d64db582 152
lynxeyed_atsu 0:d920d64db582 153 /* Calculate audio config */
lynxeyed_atsu 0:d920d64db582 154 config = (bps - 1)<<6 | (ConfigStruct->ws_sel)<<5 | (ConfigStruct->reset)<<4 |
lynxeyed_atsu 0:d920d64db582 155 (ConfigStruct->stop)<<3 | (ConfigStruct->mono)<<2 | (ConfigStruct->wordwidth);
lynxeyed_atsu 0:d920d64db582 156
lynxeyed_atsu 0:d920d64db582 157 if(TRMode == I2S_RX_MODE){
lynxeyed_atsu 0:d920d64db582 158 LPC_I2S->I2SDAI = config;
lynxeyed_atsu 0:d920d64db582 159 }else{
lynxeyed_atsu 0:d920d64db582 160 LPC_I2S->I2SDAO = config;
lynxeyed_atsu 0:d920d64db582 161 }
lynxeyed_atsu 0:d920d64db582 162 }
lynxeyed_atsu 0:d920d64db582 163
lynxeyed_atsu 0:d920d64db582 164 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 165 * @brief DeInitial both I2S transmit or receive
lynxeyed_atsu 0:d920d64db582 166 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 167 * @return none
lynxeyed_atsu 0:d920d64db582 168 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 169 void I2S_DeInit(LPC_I2S_TypeDef *I2Sx) {
lynxeyed_atsu 0:d920d64db582 170 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 171
lynxeyed_atsu 0:d920d64db582 172 // Turn off power and clock
lynxeyed_atsu 0:d920d64db582 173 CLKPWR_ConfigPPWR(CLKPWR_PCONP_PCI2S, DISABLE);
lynxeyed_atsu 0:d920d64db582 174 }
lynxeyed_atsu 0:d920d64db582 175
lynxeyed_atsu 0:d920d64db582 176 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 177 * @brief Get I2S Buffer Level
lynxeyed_atsu 0:d920d64db582 178 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 179 * @param[in] TRMode Transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 180 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 181 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 182 * @return current level of Transmit/Receive Buffer
lynxeyed_atsu 0:d920d64db582 183 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 184 uint8_t I2S_GetLevel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode)
lynxeyed_atsu 0:d920d64db582 185 {
lynxeyed_atsu 0:d920d64db582 186 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 187 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 188
lynxeyed_atsu 0:d920d64db582 189 if(TRMode == I2S_TX_MODE)
lynxeyed_atsu 0:d920d64db582 190 {
lynxeyed_atsu 0:d920d64db582 191 return ((I2Sx->I2SSTATE >> 16) & 0xFF);
lynxeyed_atsu 0:d920d64db582 192 }
lynxeyed_atsu 0:d920d64db582 193 else
lynxeyed_atsu 0:d920d64db582 194 {
lynxeyed_atsu 0:d920d64db582 195 return ((I2Sx->I2SSTATE >> 8) & 0xFF);
lynxeyed_atsu 0:d920d64db582 196 }
lynxeyed_atsu 0:d920d64db582 197 }
lynxeyed_atsu 0:d920d64db582 198
lynxeyed_atsu 0:d920d64db582 199 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 200 * @brief I2S Start: clear all STOP,RESET and MUTE bit, ready to operate
lynxeyed_atsu 0:d920d64db582 201 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 202 * @return none
lynxeyed_atsu 0:d920d64db582 203 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 204 void I2S_Start(LPC_I2S_TypeDef *I2Sx)
lynxeyed_atsu 0:d920d64db582 205 {
lynxeyed_atsu 0:d920d64db582 206 //Clear STOP,RESET and MUTE bit
lynxeyed_atsu 0:d920d64db582 207 I2Sx->I2SDAO &= ~I2S_DAI_RESET;
lynxeyed_atsu 0:d920d64db582 208 I2Sx->I2SDAI &= ~I2S_DAI_RESET;
lynxeyed_atsu 0:d920d64db582 209 I2Sx->I2SDAO &= ~I2S_DAI_STOP;
lynxeyed_atsu 0:d920d64db582 210 I2Sx->I2SDAI &= ~I2S_DAI_STOP;
lynxeyed_atsu 0:d920d64db582 211 I2Sx->I2SDAO &= ~I2S_DAI_MUTE;
lynxeyed_atsu 0:d920d64db582 212 }
lynxeyed_atsu 0:d920d64db582 213
lynxeyed_atsu 0:d920d64db582 214 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 215 * @brief I2S Send data
lynxeyed_atsu 0:d920d64db582 216 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 217 * @param[in] BufferData pointer to uint32_t is the data will be send
lynxeyed_atsu 0:d920d64db582 218 * @return none
lynxeyed_atsu 0:d920d64db582 219 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 220 void I2S_Send(LPC_I2S_TypeDef *I2Sx, uint32_t BufferData) {
lynxeyed_atsu 0:d920d64db582 221 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 222
lynxeyed_atsu 0:d920d64db582 223 I2Sx->I2STXFIFO = BufferData;
lynxeyed_atsu 0:d920d64db582 224 }
lynxeyed_atsu 0:d920d64db582 225
lynxeyed_atsu 0:d920d64db582 226 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 227 * @brief I2S Receive Data
lynxeyed_atsu 0:d920d64db582 228 * @param[in] I2Sx pointer to LPC_I2S_TypeDef
lynxeyed_atsu 0:d920d64db582 229 * @return received value
lynxeyed_atsu 0:d920d64db582 230 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 231 uint32_t I2S_Receive(LPC_I2S_TypeDef* I2Sx) {
lynxeyed_atsu 0:d920d64db582 232 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 233
lynxeyed_atsu 0:d920d64db582 234 return (I2Sx->I2SRXFIFO);
lynxeyed_atsu 0:d920d64db582 235
lynxeyed_atsu 0:d920d64db582 236 }
lynxeyed_atsu 0:d920d64db582 237
lynxeyed_atsu 0:d920d64db582 238 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 239 * @brief I2S Pause
lynxeyed_atsu 0:d920d64db582 240 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 241 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 242 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 243 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 244 * @return none
lynxeyed_atsu 0:d920d64db582 245 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 246 void I2S_Pause(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
lynxeyed_atsu 0:d920d64db582 247 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 248 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 249
lynxeyed_atsu 0:d920d64db582 250 if (TRMode == I2S_TX_MODE) //Transmit mode
lynxeyed_atsu 0:d920d64db582 251 {
lynxeyed_atsu 0:d920d64db582 252 I2Sx->I2SDAO |= I2S_DAO_STOP;
lynxeyed_atsu 0:d920d64db582 253 } else //Receive mode
lynxeyed_atsu 0:d920d64db582 254 {
lynxeyed_atsu 0:d920d64db582 255 I2Sx->I2SDAI |= I2S_DAI_STOP;
lynxeyed_atsu 0:d920d64db582 256 }
lynxeyed_atsu 0:d920d64db582 257 }
lynxeyed_atsu 0:d920d64db582 258
lynxeyed_atsu 0:d920d64db582 259 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 260 * @brief I2S Mute
lynxeyed_atsu 0:d920d64db582 261 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 262 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 263 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 264 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 265 * @return none
lynxeyed_atsu 0:d920d64db582 266 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 267 void I2S_Mute(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
lynxeyed_atsu 0:d920d64db582 268 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 269 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 270
lynxeyed_atsu 0:d920d64db582 271 if (TRMode == I2S_TX_MODE) //Transmit mode
lynxeyed_atsu 0:d920d64db582 272 {
lynxeyed_atsu 0:d920d64db582 273 I2Sx->I2SDAO |= I2S_DAO_MUTE;
lynxeyed_atsu 0:d920d64db582 274 } else //Receive mode
lynxeyed_atsu 0:d920d64db582 275 {
lynxeyed_atsu 0:d920d64db582 276 I2Sx->I2SDAI |= I2S_DAI_MUTE;
lynxeyed_atsu 0:d920d64db582 277 }
lynxeyed_atsu 0:d920d64db582 278 }
lynxeyed_atsu 0:d920d64db582 279
lynxeyed_atsu 0:d920d64db582 280 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 281 * @brief I2S Stop
lynxeyed_atsu 0:d920d64db582 282 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 283 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 284 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 285 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 286 * @return none
lynxeyed_atsu 0:d920d64db582 287 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 288 void I2S_Stop(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) {
lynxeyed_atsu 0:d920d64db582 289 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 290 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 291
lynxeyed_atsu 0:d920d64db582 292 if (TRMode == I2S_TX_MODE) //Transmit mode
lynxeyed_atsu 0:d920d64db582 293 {
lynxeyed_atsu 0:d920d64db582 294 I2Sx->I2SDAO &= ~I2S_DAO_MUTE;
lynxeyed_atsu 0:d920d64db582 295 I2Sx->I2SDAO |= I2S_DAO_STOP;
lynxeyed_atsu 0:d920d64db582 296 I2Sx->I2SDAO |= I2S_DAO_RESET;
lynxeyed_atsu 0:d920d64db582 297 } else //Receive mode
lynxeyed_atsu 0:d920d64db582 298 {
lynxeyed_atsu 0:d920d64db582 299 I2Sx->I2SDAI |= I2S_DAI_STOP;
lynxeyed_atsu 0:d920d64db582 300 I2Sx->I2SDAI |= I2S_DAI_RESET;
lynxeyed_atsu 0:d920d64db582 301 }
lynxeyed_atsu 0:d920d64db582 302 }
lynxeyed_atsu 0:d920d64db582 303
lynxeyed_atsu 0:d920d64db582 304 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 305 * @brief Set frequency for I2S
lynxeyed_atsu 0:d920d64db582 306 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 307 * @param[in] Freq is the frequency for I2S will be set. It can range
lynxeyed_atsu 0:d920d64db582 308 * from 16-96 kHz(16, 22.05, 32, 44.1, 48, 96kHz)
lynxeyed_atsu 0:d920d64db582 309 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 310 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 311 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 312 * @return Status: ERROR or SUCCESS
lynxeyed_atsu 0:d920d64db582 313 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 314 Status I2S_FreqConfig(LPC_I2S_TypeDef *I2Sx, uint32_t Freq, uint8_t TRMode) {
lynxeyed_atsu 0:d920d64db582 315
lynxeyed_atsu 0:d920d64db582 316 /* Calculate bit rate
lynxeyed_atsu 0:d920d64db582 317 * The formula is:
lynxeyed_atsu 0:d920d64db582 318 * bit_rate = channel*wordwidth - 1
lynxeyed_atsu 0:d920d64db582 319 * 48kHz sample rate for 16 bit stereo date requires
lynxeyed_atsu 0:d920d64db582 320 * a bit rate of 48000*16*2=1536MHz (MCLK)
lynxeyed_atsu 0:d920d64db582 321 */
lynxeyed_atsu 0:d920d64db582 322 uint32_t i2sPclk;
lynxeyed_atsu 0:d920d64db582 323 uint64_t divider;
lynxeyed_atsu 0:d920d64db582 324 uint8_t bitrate, channel, wordwidth;
lynxeyed_atsu 0:d920d64db582 325 uint32_t x, y;
lynxeyed_atsu 0:d920d64db582 326 uint16_t dif;
lynxeyed_atsu 0:d920d64db582 327 uint16_t error;
lynxeyed_atsu 0:d920d64db582 328 uint8_t x_divide, y_divide=0;
lynxeyed_atsu 0:d920d64db582 329 uint16_t ErrorOptimal = 0xFFFF;
lynxeyed_atsu 0:d920d64db582 330
lynxeyed_atsu 0:d920d64db582 331 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 332 CHECK_PARAM(PRAM_I2S_FREQ(Freq));
lynxeyed_atsu 0:d920d64db582 333 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 334
lynxeyed_atsu 0:d920d64db582 335 i2sPclk = CLKPWR_GetPCLK(CLKPWR_PCLKSEL_I2S);
lynxeyed_atsu 0:d920d64db582 336 printf("I2S_PCLK = %dHz\r\n",i2sPclk);
lynxeyed_atsu 0:d920d64db582 337 if(TRMode == I2S_TX_MODE)
lynxeyed_atsu 0:d920d64db582 338 {
lynxeyed_atsu 0:d920d64db582 339 channel = i2s_GetChannel(I2Sx,I2S_TX_MODE);
lynxeyed_atsu 0:d920d64db582 340 wordwidth = i2s_GetWordWidth(I2Sx,I2S_TX_MODE);
lynxeyed_atsu 0:d920d64db582 341 }
lynxeyed_atsu 0:d920d64db582 342 else
lynxeyed_atsu 0:d920d64db582 343 {
lynxeyed_atsu 0:d920d64db582 344 channel = i2s_GetChannel(I2Sx,I2S_RX_MODE);
lynxeyed_atsu 0:d920d64db582 345 wordwidth = i2s_GetWordWidth(I2Sx,I2S_RX_MODE);
lynxeyed_atsu 0:d920d64db582 346 }
lynxeyed_atsu 0:d920d64db582 347 bitrate = channel * wordwidth - 1;
lynxeyed_atsu 0:d920d64db582 348 if (TRMode == I2S_TX_MODE)// Transmitter
lynxeyed_atsu 0:d920d64db582 349 {
lynxeyed_atsu 0:d920d64db582 350 I2Sx->I2STXBITRATE = bitrate;
lynxeyed_atsu 0:d920d64db582 351 } else //Receiver
lynxeyed_atsu 0:d920d64db582 352 {
lynxeyed_atsu 0:d920d64db582 353 I2Sx->I2SRXBITRATE = bitrate;
lynxeyed_atsu 0:d920d64db582 354 }
lynxeyed_atsu 0:d920d64db582 355 printf("TX CHANNEL= %d\r\n",i2s_GetChannel(I2Sx,I2S_TX_MODE));
lynxeyed_atsu 0:d920d64db582 356 printf("TX WORDWIDTH= %dbits \r\n",i2s_GetWordWidth(I2Sx,I2S_TX_MODE));
lynxeyed_atsu 0:d920d64db582 357 printf("I2STXBITRATE= %d,bitrate= %d \r\n",I2Sx->I2STXBITRATE,bitrate);
lynxeyed_atsu 0:d920d64db582 358 /* Calculate X and Y divider
lynxeyed_atsu 0:d920d64db582 359 * The MCLK rate for the I2S transmitter is determined by the value
lynxeyed_atsu 0:d920d64db582 360 * in the I2STXRATE/I2SRXRATE register. The required I2STXRATE/I2SRXRATE
lynxeyed_atsu 0:d920d64db582 361 * setting depends on the desired audio sample rate desired, the format
lynxeyed_atsu 0:d920d64db582 362 * (stereo/mono) used, and the data size.
lynxeyed_atsu 0:d920d64db582 363 * The formula is:
lynxeyed_atsu 0:d920d64db582 364 * I2S_MCLK = PCLK * (X/Y) / 2
lynxeyed_atsu 0:d920d64db582 365 * We have:
lynxeyed_atsu 0:d920d64db582 366 * I2S_MCLK = Freq * bit_rate;
lynxeyed_atsu 0:d920d64db582 367 * So: (X/Y) = (Freq * bit_rate)/PCLK*2
lynxeyed_atsu 0:d920d64db582 368 * We use a loop function to chose the most suitable X,Y value
lynxeyed_atsu 0:d920d64db582 369 */
lynxeyed_atsu 0:d920d64db582 370
lynxeyed_atsu 0:d920d64db582 371 divider = ((uint64_t)(Freq *( bitrate+1)/* * 2*/)<<16) / i2sPclk;
lynxeyed_atsu 0:d920d64db582 372 for (y = 255; y > 0; y--) {
lynxeyed_atsu 0:d920d64db582 373 x = y * divider;
lynxeyed_atsu 0:d920d64db582 374 dif = x & 0xFFFF;
lynxeyed_atsu 0:d920d64db582 375 if(dif>0x8000) error = 0x10000-dif;
lynxeyed_atsu 0:d920d64db582 376 else error = dif;
lynxeyed_atsu 0:d920d64db582 377 if (error == 0)
lynxeyed_atsu 0:d920d64db582 378 {
lynxeyed_atsu 0:d920d64db582 379 y_divide = y;
lynxeyed_atsu 0:d920d64db582 380 break;
lynxeyed_atsu 0:d920d64db582 381 }
lynxeyed_atsu 0:d920d64db582 382 else if (error < ErrorOptimal)
lynxeyed_atsu 0:d920d64db582 383 {
lynxeyed_atsu 0:d920d64db582 384 ErrorOptimal = error;
lynxeyed_atsu 0:d920d64db582 385 y_divide = y;
lynxeyed_atsu 0:d920d64db582 386 }
lynxeyed_atsu 0:d920d64db582 387 }
lynxeyed_atsu 0:d920d64db582 388 //y_divide--;//for test
lynxeyed_atsu 0:d920d64db582 389 x_divide = (y_divide * Freq *( bitrate+1)* 2)/i2sPclk;
lynxeyed_atsu 0:d920d64db582 390 if (TRMode == I2S_TX_MODE)// Transmitter
lynxeyed_atsu 0:d920d64db582 391 {
lynxeyed_atsu 0:d920d64db582 392 I2Sx->I2STXRATE = y_divide | (x_divide << 8);
lynxeyed_atsu 0:d920d64db582 393 } else //Receiver
lynxeyed_atsu 0:d920d64db582 394 {
lynxeyed_atsu 0:d920d64db582 395 I2Sx->I2SRXRATE = y_divide | (x_divide << 8);
lynxeyed_atsu 0:d920d64db582 396 }
lynxeyed_atsu 0:d920d64db582 397
lynxeyed_atsu 0:d920d64db582 398 printf("I2STXRATE=%d, x_divide=%d, y_divide=%d \r\n",I2Sx->I2STXRATE,x_divide,y_divide);
lynxeyed_atsu 0:d920d64db582 399 return SUCCESS;
lynxeyed_atsu 0:d920d64db582 400 }
lynxeyed_atsu 0:d920d64db582 401
lynxeyed_atsu 0:d920d64db582 402 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 403 * @brief I2S set bitrate
lynxeyed_atsu 0:d920d64db582 404 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 405 * @param[in] bitrate value will be set, it can be calculate as follows:
lynxeyed_atsu 0:d920d64db582 406 * bitrate = channel * wordwidth - 1
lynxeyed_atsu 0:d920d64db582 407 * bitrate value should be in range: 0 .. 63
lynxeyed_atsu 0:d920d64db582 408 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 409 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 410 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 411 * @return none
lynxeyed_atsu 0:d920d64db582 412 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 413 void I2S_SetBitRate(LPC_I2S_TypeDef *I2Sx, uint8_t bitrate, uint8_t TRMode)
lynxeyed_atsu 0:d920d64db582 414 {
lynxeyed_atsu 0:d920d64db582 415 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 416 CHECK_PARAM(PARAM_I2S_BITRATE(bitrate));
lynxeyed_atsu 0:d920d64db582 417 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 418
lynxeyed_atsu 0:d920d64db582 419 if(TRMode == I2S_TX_MODE)
lynxeyed_atsu 0:d920d64db582 420 {
lynxeyed_atsu 0:d920d64db582 421 I2Sx->I2STXBITRATE = bitrate;
lynxeyed_atsu 0:d920d64db582 422 }
lynxeyed_atsu 0:d920d64db582 423 else
lynxeyed_atsu 0:d920d64db582 424 {
lynxeyed_atsu 0:d920d64db582 425 I2Sx->I2SRXBITRATE = bitrate;
lynxeyed_atsu 0:d920d64db582 426 }
lynxeyed_atsu 0:d920d64db582 427 }
lynxeyed_atsu 0:d920d64db582 428
lynxeyed_atsu 0:d920d64db582 429 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 430 * @brief Configuration operating mode for I2S
lynxeyed_atsu 0:d920d64db582 431 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 432 * @param[in] ModeConfig pointer to I2S_MODEConf_Type will be used to
lynxeyed_atsu 0:d920d64db582 433 * configure
lynxeyed_atsu 0:d920d64db582 434 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 435 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 436 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 437 * @return none
lynxeyed_atsu 0:d920d64db582 438 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 439 void I2S_ModeConfig(LPC_I2S_TypeDef *I2Sx, I2S_MODEConf_Type* ModeConfig,
lynxeyed_atsu 0:d920d64db582 440 uint8_t TRMode)
lynxeyed_atsu 0:d920d64db582 441 {
lynxeyed_atsu 0:d920d64db582 442 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 443 CHECK_PARAM(PARAM_I2S_CLKSEL(ModeConfig->clksel));
lynxeyed_atsu 0:d920d64db582 444 CHECK_PARAM(PARAM_I2S_4PIN(ModeConfig->fpin));
lynxeyed_atsu 0:d920d64db582 445 CHECK_PARAM(PARAM_I2S_MCLK(ModeConfig->mcena));
lynxeyed_atsu 0:d920d64db582 446 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 447
lynxeyed_atsu 0:d920d64db582 448 if (TRMode == I2S_TX_MODE) {
lynxeyed_atsu 0:d920d64db582 449 I2Sx->I2STXMODE &= ~0x0F; //clear bit 3:0 in I2STXMODE register
lynxeyed_atsu 0:d920d64db582 450 if (ModeConfig->clksel == I2S_CLKSEL_MCLK) {
lynxeyed_atsu 0:d920d64db582 451 I2Sx->I2STXMODE |= 0x02;
lynxeyed_atsu 0:d920d64db582 452 }
lynxeyed_atsu 0:d920d64db582 453 if (ModeConfig->fpin == I2S_4PIN_ENABLE) {
lynxeyed_atsu 0:d920d64db582 454 I2Sx->I2STXMODE |= (1 << 2);
lynxeyed_atsu 0:d920d64db582 455 }
lynxeyed_atsu 0:d920d64db582 456 if (ModeConfig->mcena == I2S_MCLK_ENABLE) {
lynxeyed_atsu 0:d920d64db582 457 I2Sx->I2STXMODE |= (1 << 3);
lynxeyed_atsu 0:d920d64db582 458 }
lynxeyed_atsu 0:d920d64db582 459 } else {
lynxeyed_atsu 0:d920d64db582 460 I2Sx->I2SRXMODE &= ~0x0F; //clear bit 3:0 in I2STXMODE register
lynxeyed_atsu 0:d920d64db582 461 if (ModeConfig->clksel == I2S_CLKSEL_MCLK) {
lynxeyed_atsu 0:d920d64db582 462 I2Sx->I2SRXMODE |= 0x02;
lynxeyed_atsu 0:d920d64db582 463 }
lynxeyed_atsu 0:d920d64db582 464 if (ModeConfig->fpin == I2S_4PIN_ENABLE) {
lynxeyed_atsu 0:d920d64db582 465 I2Sx->I2SRXMODE |= (1 << 2);
lynxeyed_atsu 0:d920d64db582 466 }
lynxeyed_atsu 0:d920d64db582 467 if (ModeConfig->mcena == I2S_MCLK_ENABLE) {
lynxeyed_atsu 0:d920d64db582 468 I2Sx->I2SRXMODE |= (1 << 3);
lynxeyed_atsu 0:d920d64db582 469 }
lynxeyed_atsu 0:d920d64db582 470 }
lynxeyed_atsu 0:d920d64db582 471 }
lynxeyed_atsu 0:d920d64db582 472
lynxeyed_atsu 0:d920d64db582 473 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 474 * @brief Configure DMA operation for I2S
lynxeyed_atsu 0:d920d64db582 475 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 476 * @param[in] DMAConfig pointer to I2S_DMAConf_Type will be used to configure
lynxeyed_atsu 0:d920d64db582 477 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 478 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 479 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 480 * @return none
lynxeyed_atsu 0:d920d64db582 481 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 482 void I2S_DMAConfig(LPC_I2S_TypeDef *I2Sx, I2S_DMAConf_Type* DMAConfig,
lynxeyed_atsu 0:d920d64db582 483 uint8_t TRMode)
lynxeyed_atsu 0:d920d64db582 484 {
lynxeyed_atsu 0:d920d64db582 485 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 486 CHECK_PARAM(PARAM_I2S_DMA(DMAConfig->DMAIndex));
lynxeyed_atsu 0:d920d64db582 487 CHECK_PARAM(PARAM_I2S_DMA_DEPTH(DMAConfig->depth));
lynxeyed_atsu 0:d920d64db582 488 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 489
lynxeyed_atsu 0:d920d64db582 490 if (TRMode == I2S_RX_MODE) {
lynxeyed_atsu 0:d920d64db582 491 if (DMAConfig->DMAIndex == I2S_DMA_1) {
lynxeyed_atsu 0:d920d64db582 492 LPC_I2S->I2SDMA1 = (DMAConfig->depth) << 8;
lynxeyed_atsu 0:d920d64db582 493 } else {
lynxeyed_atsu 0:d920d64db582 494 LPC_I2S->I2SDMA2 = (DMAConfig->depth) << 8;
lynxeyed_atsu 0:d920d64db582 495 }
lynxeyed_atsu 0:d920d64db582 496 } else {
lynxeyed_atsu 0:d920d64db582 497 if (DMAConfig->DMAIndex == I2S_DMA_1) {
lynxeyed_atsu 0:d920d64db582 498 LPC_I2S->I2SDMA1 = (DMAConfig->depth) << 16;
lynxeyed_atsu 0:d920d64db582 499 } else {
lynxeyed_atsu 0:d920d64db582 500 LPC_I2S->I2SDMA2 = (DMAConfig->depth) << 16;
lynxeyed_atsu 0:d920d64db582 501 }
lynxeyed_atsu 0:d920d64db582 502 }
lynxeyed_atsu 0:d920d64db582 503 }
lynxeyed_atsu 0:d920d64db582 504
lynxeyed_atsu 0:d920d64db582 505 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 506 * @brief Enable/Disable DMA operation for I2S
lynxeyed_atsu 0:d920d64db582 507 * @param[in] I2Sx: I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 508 * @param[in] DMAIndex chose what DMA is used, should be:
lynxeyed_atsu 0:d920d64db582 509 * - I2S_DMA_1 = 0: DMA1
lynxeyed_atsu 0:d920d64db582 510 * - I2S_DMA_2 = 1: DMA2
lynxeyed_atsu 0:d920d64db582 511 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 512 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 513 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 514 * @param[in] NewState is new state of DMA operation, should be:
lynxeyed_atsu 0:d920d64db582 515 * - ENABLE
lynxeyed_atsu 0:d920d64db582 516 * - DISABLE
lynxeyed_atsu 0:d920d64db582 517 * @return none
lynxeyed_atsu 0:d920d64db582 518 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 519 void I2S_DMACmd(LPC_I2S_TypeDef *I2Sx, uint8_t DMAIndex, uint8_t TRMode,
lynxeyed_atsu 0:d920d64db582 520 FunctionalState NewState)
lynxeyed_atsu 0:d920d64db582 521 {
lynxeyed_atsu 0:d920d64db582 522 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 523 CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState));
lynxeyed_atsu 0:d920d64db582 524 CHECK_PARAM(PARAM_I2S_DMA(DMAIndex));
lynxeyed_atsu 0:d920d64db582 525 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 526
lynxeyed_atsu 0:d920d64db582 527 if (TRMode == I2S_RX_MODE) {
lynxeyed_atsu 0:d920d64db582 528 if (DMAIndex == I2S_DMA_1) {
lynxeyed_atsu 0:d920d64db582 529 if (NewState == ENABLE)
lynxeyed_atsu 0:d920d64db582 530 I2Sx->I2SDMA1 |= 0x01;
lynxeyed_atsu 0:d920d64db582 531 else
lynxeyed_atsu 0:d920d64db582 532 I2Sx->I2SDMA1 &= ~0x01;
lynxeyed_atsu 0:d920d64db582 533 } else {
lynxeyed_atsu 0:d920d64db582 534 if (NewState == ENABLE)
lynxeyed_atsu 0:d920d64db582 535 I2Sx->I2SDMA2 |= 0x01;
lynxeyed_atsu 0:d920d64db582 536 else
lynxeyed_atsu 0:d920d64db582 537 I2Sx->I2SDMA2 &= ~0x01;
lynxeyed_atsu 0:d920d64db582 538 }
lynxeyed_atsu 0:d920d64db582 539 } else {
lynxeyed_atsu 0:d920d64db582 540 if (DMAIndex == I2S_DMA_1) {
lynxeyed_atsu 0:d920d64db582 541 if (NewState == ENABLE)
lynxeyed_atsu 0:d920d64db582 542 I2Sx->I2SDMA1 |= 0x02;
lynxeyed_atsu 0:d920d64db582 543 else
lynxeyed_atsu 0:d920d64db582 544 I2Sx->I2SDMA1 &= ~0x02;
lynxeyed_atsu 0:d920d64db582 545 } else {
lynxeyed_atsu 0:d920d64db582 546 if (NewState == ENABLE)
lynxeyed_atsu 0:d920d64db582 547 I2Sx->I2SDMA2 |= 0x02;
lynxeyed_atsu 0:d920d64db582 548 else
lynxeyed_atsu 0:d920d64db582 549 I2Sx->I2SDMA2 &= ~0x02;
lynxeyed_atsu 0:d920d64db582 550 }
lynxeyed_atsu 0:d920d64db582 551 }
lynxeyed_atsu 0:d920d64db582 552 }
lynxeyed_atsu 0:d920d64db582 553
lynxeyed_atsu 0:d920d64db582 554 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 555 * @brief Configure IRQ for I2S
lynxeyed_atsu 0:d920d64db582 556 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 557 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 558 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 559 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 560 * @param[in] level is the FIFO level that triggers IRQ request
lynxeyed_atsu 0:d920d64db582 561 * @return none
lynxeyed_atsu 0:d920d64db582 562 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 563 void I2S_IRQConfig(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, uint8_t level) {
lynxeyed_atsu 0:d920d64db582 564 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 565 CHECK_PARAM(PARAM_I2S_TRX(TRMode));
lynxeyed_atsu 0:d920d64db582 566 CHECK_PARAM(PARAM_I2S_IRQ_LEVEL(level));
lynxeyed_atsu 0:d920d64db582 567
lynxeyed_atsu 0:d920d64db582 568 if (TRMode == I2S_RX_MODE) {
lynxeyed_atsu 0:d920d64db582 569 I2Sx->I2SIRQ |= (level << 8);
lynxeyed_atsu 0:d920d64db582 570 } else {
lynxeyed_atsu 0:d920d64db582 571 I2Sx->I2SIRQ |= (level << 16);
lynxeyed_atsu 0:d920d64db582 572 }
lynxeyed_atsu 0:d920d64db582 573 }
lynxeyed_atsu 0:d920d64db582 574
lynxeyed_atsu 0:d920d64db582 575 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 576 * @brief Enable/Disable IRQ for I2S
lynxeyed_atsu 0:d920d64db582 577 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 578 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 579 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 580 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 581 * @param[in] NewState is new state of DMA operation, should be:
lynxeyed_atsu 0:d920d64db582 582 * - ENABLE
lynxeyed_atsu 0:d920d64db582 583 * - DISABLE
lynxeyed_atsu 0:d920d64db582 584 * @return none
lynxeyed_atsu 0:d920d64db582 585 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 586 void I2S_IRQCmd(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, FunctionalState NewState) {
lynxeyed_atsu 0:d920d64db582 587 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 588 CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState));
lynxeyed_atsu 0:d920d64db582 589
lynxeyed_atsu 0:d920d64db582 590 if (TRMode == I2S_RX_MODE) {
lynxeyed_atsu 0:d920d64db582 591 if (NewState == ENABLE)
lynxeyed_atsu 0:d920d64db582 592 I2Sx->I2SIRQ |= 0x01;
lynxeyed_atsu 0:d920d64db582 593 else
lynxeyed_atsu 0:d920d64db582 594 I2Sx->I2SIRQ &= ~0x01;
lynxeyed_atsu 0:d920d64db582 595 //Enable DMA
lynxeyed_atsu 0:d920d64db582 596
lynxeyed_atsu 0:d920d64db582 597 } else {
lynxeyed_atsu 0:d920d64db582 598 if (NewState == ENABLE)
lynxeyed_atsu 0:d920d64db582 599 I2Sx->I2SIRQ |= 0x02;
lynxeyed_atsu 0:d920d64db582 600 else
lynxeyed_atsu 0:d920d64db582 601 I2Sx->I2SIRQ &= ~0x02;
lynxeyed_atsu 0:d920d64db582 602 }
lynxeyed_atsu 0:d920d64db582 603 }
lynxeyed_atsu 0:d920d64db582 604
lynxeyed_atsu 0:d920d64db582 605 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 606 * @brief Get I2S interrupt status
lynxeyed_atsu 0:d920d64db582 607 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 608 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 609 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 610 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 611 * @return FunctionState should be:
lynxeyed_atsu 0:d920d64db582 612 * - ENABLE: interrupt is enable
lynxeyed_atsu 0:d920d64db582 613 * - DISABLE: interrupt is disable
lynxeyed_atsu 0:d920d64db582 614 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 615 FunctionalState I2S_GetIRQStatus(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode)
lynxeyed_atsu 0:d920d64db582 616 {
lynxeyed_atsu 0:d920d64db582 617 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 618 if(TRMode == I2S_TX_MODE)
lynxeyed_atsu 0:d920d64db582 619 return (FunctionalState)((I2Sx->I2SIRQ >> 1)&0x01);
lynxeyed_atsu 0:d920d64db582 620 else
lynxeyed_atsu 0:d920d64db582 621 return (FunctionalState)((I2Sx->I2SIRQ)&0x01);
lynxeyed_atsu 0:d920d64db582 622 }
lynxeyed_atsu 0:d920d64db582 623
lynxeyed_atsu 0:d920d64db582 624 /********************************************************************//**
lynxeyed_atsu 0:d920d64db582 625 * @brief Get I2S interrupt depth
lynxeyed_atsu 0:d920d64db582 626 * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S
lynxeyed_atsu 0:d920d64db582 627 * @param[in] TRMode is transmit/receive mode, should be:
lynxeyed_atsu 0:d920d64db582 628 * - I2S_TX_MODE = 0: transmit mode
lynxeyed_atsu 0:d920d64db582 629 * - I2S_RX_MODE = 1: receive mode
lynxeyed_atsu 0:d920d64db582 630 * @return depth of FIFO level on which to create an irq request
lynxeyed_atsu 0:d920d64db582 631 *********************************************************************/
lynxeyed_atsu 0:d920d64db582 632 uint8_t I2S_GetIRQDepth(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode)
lynxeyed_atsu 0:d920d64db582 633 {
lynxeyed_atsu 0:d920d64db582 634 CHECK_PARAM(PARAM_I2Sx(I2Sx));
lynxeyed_atsu 0:d920d64db582 635 if(TRMode == I2S_TX_MODE)
lynxeyed_atsu 0:d920d64db582 636 return (((I2Sx->I2SIRQ)>>16)&0xFF);
lynxeyed_atsu 0:d920d64db582 637 else
lynxeyed_atsu 0:d920d64db582 638 return (((I2Sx->I2SIRQ)>>8)&0xFF);
lynxeyed_atsu 0:d920d64db582 639 }
lynxeyed_atsu 0:d920d64db582 640 /**
lynxeyed_atsu 0:d920d64db582 641 * @}
lynxeyed_atsu 0:d920d64db582 642 */
lynxeyed_atsu 0:d920d64db582 643
lynxeyed_atsu 0:d920d64db582 644 #endif /* _I2S */
lynxeyed_atsu 0:d920d64db582 645
lynxeyed_atsu 0:d920d64db582 646 /**
lynxeyed_atsu 0:d920d64db582 647 * @}
lynxeyed_atsu 0:d920d64db582 648 */
lynxeyed_atsu 0:d920d64db582 649
lynxeyed_atsu 0:d920d64db582 650 /* --------------------------------- End Of File ------------------------------ */