Frank 26080115
Date: March 20, 2011 This library is created from "LPC17xx CMSIS-Compliant Standard Peripheral Firmware Driver Library (GNU, Keil, IAR) (Jan 28, 2011)", available from NXP's website, under "All microcontrollers support documents" [[http://ics.nxp.com/support/documents/microcontrollers/?type=software]] You will need to follow [[/projects/libraries/svn/mbed/trunk/LPC1768/LPC17xx.h]] while using this library Examples provided here [[/users/frank26080115/programs/LPC1700CMSIS_Examples/]] The beautiful thing is that NXP does not place copyright protection on any of the files in here Only a few modifications are made to make it compile with the mbed online compiler, I fixed some warnings as well. This is untested as of March 20, 2011 Forum post about this library: [[/forum/mbed/topic/2030/]]
lpc17xx_i2s.c@0:84d7747641aa, 2011-03-20 (annotated)
- Committer:
- frank26080115
- Date:
- Sun Mar 20 18:45:15 2011 +0000
- Revision:
- 0:84d7747641aa
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| frank26080115 | 0:84d7747641aa | 1 | /***********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 2 | * @file lpc17xx_i2s.c |
| frank26080115 | 0:84d7747641aa | 3 | * @brief Contains all functions support for I2S firmware library on LPC17xx |
| frank26080115 | 0:84d7747641aa | 4 | * @version 3.1 |
| frank26080115 | 0:84d7747641aa | 5 | * @date 23. Sep. 2010 |
| frank26080115 | 0:84d7747641aa | 6 | * @author NXP MCU SW Application Team |
| frank26080115 | 0:84d7747641aa | 7 | ************************************************************************** |
| frank26080115 | 0:84d7747641aa | 8 | * Software that is described herein is for illustrative purposes only |
| frank26080115 | 0:84d7747641aa | 9 | * which provides customers with programming information regarding the |
| frank26080115 | 0:84d7747641aa | 10 | * products. This software is supplied "AS IS" without any warranties. |
| frank26080115 | 0:84d7747641aa | 11 | * NXP Semiconductors assumes no responsibility or liability for the |
| frank26080115 | 0:84d7747641aa | 12 | * use of the software, conveys no license or title under any patent, |
| frank26080115 | 0:84d7747641aa | 13 | * copyright, or mask work right to the product. NXP Semiconductors |
| frank26080115 | 0:84d7747641aa | 14 | * reserves the right to make changes in the software without |
| frank26080115 | 0:84d7747641aa | 15 | * notification. NXP Semiconductors also make no representation or |
| frank26080115 | 0:84d7747641aa | 16 | * warranty that such application will be suitable for the specified |
| frank26080115 | 0:84d7747641aa | 17 | * use without further testing or modification. |
| frank26080115 | 0:84d7747641aa | 18 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 19 | |
| frank26080115 | 0:84d7747641aa | 20 | /* Peripheral group ----------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 21 | /** @addtogroup I2S |
| frank26080115 | 0:84d7747641aa | 22 | * @{ |
| frank26080115 | 0:84d7747641aa | 23 | */ |
| frank26080115 | 0:84d7747641aa | 24 | |
| frank26080115 | 0:84d7747641aa | 25 | /* Includes ------------------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 26 | #include "lpc17xx_i2s.h" |
| frank26080115 | 0:84d7747641aa | 27 | #include "lpc17xx_clkpwr.h" |
| frank26080115 | 0:84d7747641aa | 28 | |
| frank26080115 | 0:84d7747641aa | 29 | |
| frank26080115 | 0:84d7747641aa | 30 | /* If this source file built with example, the LPC17xx FW library configuration |
| frank26080115 | 0:84d7747641aa | 31 | * file in each example directory ("lpc17xx_libcfg.h") must be included, |
| frank26080115 | 0:84d7747641aa | 32 | * otherwise the default FW library configuration file must be included instead |
| frank26080115 | 0:84d7747641aa | 33 | */ |
| frank26080115 | 0:84d7747641aa | 34 | #ifdef __BUILD_WITH_EXAMPLE__ |
| frank26080115 | 0:84d7747641aa | 35 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:84d7747641aa | 36 | #else |
| frank26080115 | 0:84d7747641aa | 37 | #include "lpc17xx_libcfg_default.h" |
| frank26080115 | 0:84d7747641aa | 38 | #endif /* __BUILD_WITH_EXAMPLE__ */ |
| frank26080115 | 0:84d7747641aa | 39 | |
| frank26080115 | 0:84d7747641aa | 40 | |
| frank26080115 | 0:84d7747641aa | 41 | #ifdef _I2S |
| frank26080115 | 0:84d7747641aa | 42 | |
| frank26080115 | 0:84d7747641aa | 43 | /* Private Functions ---------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 44 | |
| frank26080115 | 0:84d7747641aa | 45 | static uint8_t i2s_GetWordWidth(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode); |
| frank26080115 | 0:84d7747641aa | 46 | static uint8_t i2s_GetChannel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode); |
| frank26080115 | 0:84d7747641aa | 47 | |
| frank26080115 | 0:84d7747641aa | 48 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 49 | * @brief Get I2S wordwidth value |
| frank26080115 | 0:84d7747641aa | 50 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 51 | * @param[in] TRMode is the I2S mode, should be: |
| frank26080115 | 0:84d7747641aa | 52 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 53 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 54 | * @return The wordwidth value, should be: 8,16 or 32 |
| frank26080115 | 0:84d7747641aa | 55 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 56 | static uint8_t i2s_GetWordWidth(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) { |
| frank26080115 | 0:84d7747641aa | 57 | uint8_t value; |
| frank26080115 | 0:84d7747641aa | 58 | |
| frank26080115 | 0:84d7747641aa | 59 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 60 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 61 | |
| frank26080115 | 0:84d7747641aa | 62 | if (TRMode == I2S_TX_MODE) { |
| frank26080115 | 0:84d7747641aa | 63 | value = (I2Sx->I2SDAO) & 0x03; /* get wordwidth bit */ |
| frank26080115 | 0:84d7747641aa | 64 | } else { |
| frank26080115 | 0:84d7747641aa | 65 | value = (I2Sx->I2SDAI) & 0x03; /* get wordwidth bit */ |
| frank26080115 | 0:84d7747641aa | 66 | } |
| frank26080115 | 0:84d7747641aa | 67 | switch (value) { |
| frank26080115 | 0:84d7747641aa | 68 | case I2S_WORDWIDTH_8: |
| frank26080115 | 0:84d7747641aa | 69 | return 8; |
| frank26080115 | 0:84d7747641aa | 70 | case I2S_WORDWIDTH_16: |
| frank26080115 | 0:84d7747641aa | 71 | return 16; |
| frank26080115 | 0:84d7747641aa | 72 | default: |
| frank26080115 | 0:84d7747641aa | 73 | return 32; |
| frank26080115 | 0:84d7747641aa | 74 | } |
| frank26080115 | 0:84d7747641aa | 75 | } |
| frank26080115 | 0:84d7747641aa | 76 | |
| frank26080115 | 0:84d7747641aa | 77 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 78 | * @brief Get I2S channel value |
| frank26080115 | 0:84d7747641aa | 79 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 80 | * @param[in] TRMode is the I2S mode, should be: |
| frank26080115 | 0:84d7747641aa | 81 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 82 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 83 | * @return The channel value, should be: 1(mono) or 2(stereo) |
| frank26080115 | 0:84d7747641aa | 84 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 85 | static uint8_t i2s_GetChannel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) { |
| frank26080115 | 0:84d7747641aa | 86 | uint8_t value; |
| frank26080115 | 0:84d7747641aa | 87 | |
| frank26080115 | 0:84d7747641aa | 88 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 89 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 90 | |
| frank26080115 | 0:84d7747641aa | 91 | if (TRMode == I2S_TX_MODE) { |
| frank26080115 | 0:84d7747641aa | 92 | value = ((I2Sx->I2SDAO) & 0x04)>>2; /* get bit[2] */ |
| frank26080115 | 0:84d7747641aa | 93 | } else { |
| frank26080115 | 0:84d7747641aa | 94 | value = ((I2Sx->I2SDAI) & 0x04)>>2; /* get bit[2] */ |
| frank26080115 | 0:84d7747641aa | 95 | } |
| frank26080115 | 0:84d7747641aa | 96 | if(value == I2S_MONO) return 1; |
| frank26080115 | 0:84d7747641aa | 97 | return 2; |
| frank26080115 | 0:84d7747641aa | 98 | } |
| frank26080115 | 0:84d7747641aa | 99 | |
| frank26080115 | 0:84d7747641aa | 100 | /* End of Private Functions --------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 101 | |
| frank26080115 | 0:84d7747641aa | 102 | |
| frank26080115 | 0:84d7747641aa | 103 | /* Public Functions ----------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 104 | /** @addtogroup I2S_Public_Functions |
| frank26080115 | 0:84d7747641aa | 105 | * @{ |
| frank26080115 | 0:84d7747641aa | 106 | */ |
| frank26080115 | 0:84d7747641aa | 107 | |
| frank26080115 | 0:84d7747641aa | 108 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 109 | * @brief Initialize I2S |
| frank26080115 | 0:84d7747641aa | 110 | * - Turn on power and clock |
| frank26080115 | 0:84d7747641aa | 111 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 112 | * @return none |
| frank26080115 | 0:84d7747641aa | 113 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 114 | void I2S_Init(LPC_I2S_TypeDef *I2Sx) { |
| frank26080115 | 0:84d7747641aa | 115 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 116 | |
| frank26080115 | 0:84d7747641aa | 117 | // Turn on power and clock |
| frank26080115 | 0:84d7747641aa | 118 | CLKPWR_ConfigPPWR(CLKPWR_PCONP_PCI2S, ENABLE); |
| frank26080115 | 0:84d7747641aa | 119 | LPC_I2S->I2SDAI = LPC_I2S->I2SDAO = 0x00; |
| frank26080115 | 0:84d7747641aa | 120 | } |
| frank26080115 | 0:84d7747641aa | 121 | |
| frank26080115 | 0:84d7747641aa | 122 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 123 | * @brief Configuration I2S, setting: |
| frank26080115 | 0:84d7747641aa | 124 | * - master/slave mode |
| frank26080115 | 0:84d7747641aa | 125 | * - wordwidth value |
| frank26080115 | 0:84d7747641aa | 126 | * - channel mode |
| frank26080115 | 0:84d7747641aa | 127 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 128 | * @param[in] TRMode transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 129 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 130 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 131 | * @param[in] ConfigStruct pointer to I2S_CFG_Type structure |
| frank26080115 | 0:84d7747641aa | 132 | * which will be initialized. |
| frank26080115 | 0:84d7747641aa | 133 | * @return none |
| frank26080115 | 0:84d7747641aa | 134 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 135 | void I2S_Config(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, I2S_CFG_Type* ConfigStruct) |
| frank26080115 | 0:84d7747641aa | 136 | { |
| frank26080115 | 0:84d7747641aa | 137 | uint32_t bps, config; |
| frank26080115 | 0:84d7747641aa | 138 | |
| frank26080115 | 0:84d7747641aa | 139 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 140 | |
| frank26080115 | 0:84d7747641aa | 141 | CHECK_PARAM(PARAM_I2S_WORDWIDTH(ConfigStruct->wordwidth)); |
| frank26080115 | 0:84d7747641aa | 142 | CHECK_PARAM(PARAM_I2S_CHANNEL(ConfigStruct->mono)); |
| frank26080115 | 0:84d7747641aa | 143 | CHECK_PARAM(PARAM_I2S_STOP(ConfigStruct->stop)); |
| frank26080115 | 0:84d7747641aa | 144 | CHECK_PARAM(PARAM_I2S_RESET(ConfigStruct->reset)); |
| frank26080115 | 0:84d7747641aa | 145 | CHECK_PARAM(PARAM_I2S_WS_SEL(ConfigStruct->ws_sel)); |
| frank26080115 | 0:84d7747641aa | 146 | CHECK_PARAM(PARAM_I2S_MUTE(ConfigStruct->mute)); |
| frank26080115 | 0:84d7747641aa | 147 | |
| frank26080115 | 0:84d7747641aa | 148 | /* Setup clock */ |
| frank26080115 | 0:84d7747641aa | 149 | bps = (ConfigStruct->wordwidth +1)*8; |
| frank26080115 | 0:84d7747641aa | 150 | |
| frank26080115 | 0:84d7747641aa | 151 | /* Calculate audio config */ |
| frank26080115 | 0:84d7747641aa | 152 | config = (bps - 1)<<6 | (ConfigStruct->ws_sel)<<5 | (ConfigStruct->reset)<<4 | |
| frank26080115 | 0:84d7747641aa | 153 | (ConfigStruct->stop)<<3 | (ConfigStruct->mono)<<2 | (ConfigStruct->wordwidth); |
| frank26080115 | 0:84d7747641aa | 154 | |
| frank26080115 | 0:84d7747641aa | 155 | if(TRMode == I2S_RX_MODE){ |
| frank26080115 | 0:84d7747641aa | 156 | LPC_I2S->I2SDAI = config; |
| frank26080115 | 0:84d7747641aa | 157 | }else{ |
| frank26080115 | 0:84d7747641aa | 158 | LPC_I2S->I2SDAO = config; |
| frank26080115 | 0:84d7747641aa | 159 | } |
| frank26080115 | 0:84d7747641aa | 160 | } |
| frank26080115 | 0:84d7747641aa | 161 | |
| frank26080115 | 0:84d7747641aa | 162 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 163 | * @brief DeInitial both I2S transmit or receive |
| frank26080115 | 0:84d7747641aa | 164 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 165 | * @return none |
| frank26080115 | 0:84d7747641aa | 166 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 167 | void I2S_DeInit(LPC_I2S_TypeDef *I2Sx) { |
| frank26080115 | 0:84d7747641aa | 168 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 169 | |
| frank26080115 | 0:84d7747641aa | 170 | // Turn off power and clock |
| frank26080115 | 0:84d7747641aa | 171 | CLKPWR_ConfigPPWR(CLKPWR_PCONP_PCI2S, DISABLE); |
| frank26080115 | 0:84d7747641aa | 172 | } |
| frank26080115 | 0:84d7747641aa | 173 | |
| frank26080115 | 0:84d7747641aa | 174 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 175 | * @brief Get I2S Buffer Level |
| frank26080115 | 0:84d7747641aa | 176 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 177 | * @param[in] TRMode Transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 178 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 179 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 180 | * @return current level of Transmit/Receive Buffer |
| frank26080115 | 0:84d7747641aa | 181 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 182 | uint8_t I2S_GetLevel(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) |
| frank26080115 | 0:84d7747641aa | 183 | { |
| frank26080115 | 0:84d7747641aa | 184 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 185 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 186 | |
| frank26080115 | 0:84d7747641aa | 187 | if(TRMode == I2S_TX_MODE) |
| frank26080115 | 0:84d7747641aa | 188 | { |
| frank26080115 | 0:84d7747641aa | 189 | return ((I2Sx->I2SSTATE >> 16) & 0xFF); |
| frank26080115 | 0:84d7747641aa | 190 | } |
| frank26080115 | 0:84d7747641aa | 191 | else |
| frank26080115 | 0:84d7747641aa | 192 | { |
| frank26080115 | 0:84d7747641aa | 193 | return ((I2Sx->I2SSTATE >> 8) & 0xFF); |
| frank26080115 | 0:84d7747641aa | 194 | } |
| frank26080115 | 0:84d7747641aa | 195 | } |
| frank26080115 | 0:84d7747641aa | 196 | |
| frank26080115 | 0:84d7747641aa | 197 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 198 | * @brief I2S Start: clear all STOP,RESET and MUTE bit, ready to operate |
| frank26080115 | 0:84d7747641aa | 199 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 200 | * @return none |
| frank26080115 | 0:84d7747641aa | 201 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 202 | void I2S_Start(LPC_I2S_TypeDef *I2Sx) |
| frank26080115 | 0:84d7747641aa | 203 | { |
| frank26080115 | 0:84d7747641aa | 204 | //Clear STOP,RESET and MUTE bit |
| frank26080115 | 0:84d7747641aa | 205 | I2Sx->I2SDAO &= ~I2S_DAI_RESET; |
| frank26080115 | 0:84d7747641aa | 206 | I2Sx->I2SDAI &= ~I2S_DAI_RESET; |
| frank26080115 | 0:84d7747641aa | 207 | I2Sx->I2SDAO &= ~I2S_DAI_STOP; |
| frank26080115 | 0:84d7747641aa | 208 | I2Sx->I2SDAI &= ~I2S_DAI_STOP; |
| frank26080115 | 0:84d7747641aa | 209 | I2Sx->I2SDAO &= ~I2S_DAI_MUTE; |
| frank26080115 | 0:84d7747641aa | 210 | } |
| frank26080115 | 0:84d7747641aa | 211 | |
| frank26080115 | 0:84d7747641aa | 212 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 213 | * @brief I2S Send data |
| frank26080115 | 0:84d7747641aa | 214 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 215 | * @param[in] BufferData pointer to uint32_t is the data will be send |
| frank26080115 | 0:84d7747641aa | 216 | * @return none |
| frank26080115 | 0:84d7747641aa | 217 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 218 | void I2S_Send(LPC_I2S_TypeDef *I2Sx, uint32_t BufferData) { |
| frank26080115 | 0:84d7747641aa | 219 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 220 | |
| frank26080115 | 0:84d7747641aa | 221 | I2Sx->I2STXFIFO = BufferData; |
| frank26080115 | 0:84d7747641aa | 222 | } |
| frank26080115 | 0:84d7747641aa | 223 | |
| frank26080115 | 0:84d7747641aa | 224 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 225 | * @brief I2S Receive Data |
| frank26080115 | 0:84d7747641aa | 226 | * @param[in] I2Sx pointer to LPC_I2S_TypeDef |
| frank26080115 | 0:84d7747641aa | 227 | * @return received value |
| frank26080115 | 0:84d7747641aa | 228 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 229 | uint32_t I2S_Receive(LPC_I2S_TypeDef* I2Sx) { |
| frank26080115 | 0:84d7747641aa | 230 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 231 | |
| frank26080115 | 0:84d7747641aa | 232 | return (I2Sx->I2SRXFIFO); |
| frank26080115 | 0:84d7747641aa | 233 | |
| frank26080115 | 0:84d7747641aa | 234 | } |
| frank26080115 | 0:84d7747641aa | 235 | |
| frank26080115 | 0:84d7747641aa | 236 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 237 | * @brief I2S Pause |
| frank26080115 | 0:84d7747641aa | 238 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 239 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 240 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 241 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 242 | * @return none |
| frank26080115 | 0:84d7747641aa | 243 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 244 | void I2S_Pause(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) { |
| frank26080115 | 0:84d7747641aa | 245 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 246 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 247 | |
| frank26080115 | 0:84d7747641aa | 248 | if (TRMode == I2S_TX_MODE) //Transmit mode |
| frank26080115 | 0:84d7747641aa | 249 | { |
| frank26080115 | 0:84d7747641aa | 250 | I2Sx->I2SDAO |= I2S_DAO_STOP; |
| frank26080115 | 0:84d7747641aa | 251 | } else //Receive mode |
| frank26080115 | 0:84d7747641aa | 252 | { |
| frank26080115 | 0:84d7747641aa | 253 | I2Sx->I2SDAI |= I2S_DAI_STOP; |
| frank26080115 | 0:84d7747641aa | 254 | } |
| frank26080115 | 0:84d7747641aa | 255 | } |
| frank26080115 | 0:84d7747641aa | 256 | |
| frank26080115 | 0:84d7747641aa | 257 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 258 | * @brief I2S Mute |
| frank26080115 | 0:84d7747641aa | 259 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 260 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 261 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 262 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 263 | * @return none |
| frank26080115 | 0:84d7747641aa | 264 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 265 | void I2S_Mute(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) { |
| frank26080115 | 0:84d7747641aa | 266 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 267 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 268 | |
| frank26080115 | 0:84d7747641aa | 269 | if (TRMode == I2S_TX_MODE) //Transmit mode |
| frank26080115 | 0:84d7747641aa | 270 | { |
| frank26080115 | 0:84d7747641aa | 271 | I2Sx->I2SDAO |= I2S_DAO_MUTE; |
| frank26080115 | 0:84d7747641aa | 272 | } else //Receive mode |
| frank26080115 | 0:84d7747641aa | 273 | { |
| frank26080115 | 0:84d7747641aa | 274 | I2Sx->I2SDAI |= I2S_DAI_MUTE; |
| frank26080115 | 0:84d7747641aa | 275 | } |
| frank26080115 | 0:84d7747641aa | 276 | } |
| frank26080115 | 0:84d7747641aa | 277 | |
| frank26080115 | 0:84d7747641aa | 278 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 279 | * @brief I2S Stop |
| frank26080115 | 0:84d7747641aa | 280 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 281 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 282 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 283 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 284 | * @return none |
| frank26080115 | 0:84d7747641aa | 285 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 286 | void I2S_Stop(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode) { |
| frank26080115 | 0:84d7747641aa | 287 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 288 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 289 | |
| frank26080115 | 0:84d7747641aa | 290 | if (TRMode == I2S_TX_MODE) //Transmit mode |
| frank26080115 | 0:84d7747641aa | 291 | { |
| frank26080115 | 0:84d7747641aa | 292 | I2Sx->I2SDAO &= ~I2S_DAO_MUTE; |
| frank26080115 | 0:84d7747641aa | 293 | I2Sx->I2SDAO |= I2S_DAO_STOP; |
| frank26080115 | 0:84d7747641aa | 294 | I2Sx->I2SDAO |= I2S_DAO_RESET; |
| frank26080115 | 0:84d7747641aa | 295 | } else //Receive mode |
| frank26080115 | 0:84d7747641aa | 296 | { |
| frank26080115 | 0:84d7747641aa | 297 | I2Sx->I2SDAI |= I2S_DAI_STOP; |
| frank26080115 | 0:84d7747641aa | 298 | I2Sx->I2SDAI |= I2S_DAI_RESET; |
| frank26080115 | 0:84d7747641aa | 299 | } |
| frank26080115 | 0:84d7747641aa | 300 | } |
| frank26080115 | 0:84d7747641aa | 301 | |
| frank26080115 | 0:84d7747641aa | 302 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 303 | * @brief Set frequency for I2S |
| frank26080115 | 0:84d7747641aa | 304 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 305 | * @param[in] Freq is the frequency for I2S will be set. It can range |
| frank26080115 | 0:84d7747641aa | 306 | * from 16-96 kHz(16, 22.05, 32, 44.1, 48, 96kHz) |
| frank26080115 | 0:84d7747641aa | 307 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 308 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 309 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 310 | * @return Status: ERROR or SUCCESS |
| frank26080115 | 0:84d7747641aa | 311 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 312 | Status I2S_FreqConfig(LPC_I2S_TypeDef *I2Sx, uint32_t Freq, uint8_t TRMode) { |
| frank26080115 | 0:84d7747641aa | 313 | |
| frank26080115 | 0:84d7747641aa | 314 | uint32_t i2sMclk; |
| frank26080115 | 0:84d7747641aa | 315 | uint8_t bitrate, channel, wordwidth; |
| frank26080115 | 0:84d7747641aa | 316 | |
| frank26080115 | 0:84d7747641aa | 317 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 318 | CHECK_PARAM(PRAM_I2S_FREQ(Freq)); |
| frank26080115 | 0:84d7747641aa | 319 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 320 | |
| frank26080115 | 0:84d7747641aa | 321 | //set i2s reference is i2s_pclk/2 as default |
| frank26080115 | 0:84d7747641aa | 322 | i2sMclk = CLKPWR_GetPCLK(CLKPWR_PCLKSEL_I2S)/2; |
| frank26080115 | 0:84d7747641aa | 323 | I2Sx->I2STXRATE = 1 | (1<<8); |
| frank26080115 | 0:84d7747641aa | 324 | I2Sx->I2SRXRATE = 1 | (1<<8); |
| frank26080115 | 0:84d7747641aa | 325 | if(TRMode == I2S_TX_MODE) |
| frank26080115 | 0:84d7747641aa | 326 | { |
| frank26080115 | 0:84d7747641aa | 327 | channel = i2s_GetChannel(I2Sx,I2S_TX_MODE); |
| frank26080115 | 0:84d7747641aa | 328 | wordwidth = i2s_GetWordWidth(I2Sx,I2S_TX_MODE); |
| frank26080115 | 0:84d7747641aa | 329 | } |
| frank26080115 | 0:84d7747641aa | 330 | else |
| frank26080115 | 0:84d7747641aa | 331 | { |
| frank26080115 | 0:84d7747641aa | 332 | channel = i2s_GetChannel(I2Sx,I2S_RX_MODE); |
| frank26080115 | 0:84d7747641aa | 333 | wordwidth = i2s_GetWordWidth(I2Sx,I2S_RX_MODE); |
| frank26080115 | 0:84d7747641aa | 334 | } |
| frank26080115 | 0:84d7747641aa | 335 | bitrate = i2sMclk/(Freq * channel * wordwidth) - 1; |
| frank26080115 | 0:84d7747641aa | 336 | if (TRMode == I2S_TX_MODE)// Transmitter |
| frank26080115 | 0:84d7747641aa | 337 | { |
| frank26080115 | 0:84d7747641aa | 338 | I2Sx->I2STXBITRATE = bitrate; |
| frank26080115 | 0:84d7747641aa | 339 | } else //Receiver |
| frank26080115 | 0:84d7747641aa | 340 | { |
| frank26080115 | 0:84d7747641aa | 341 | I2Sx->I2SRXBITRATE = bitrate; |
| frank26080115 | 0:84d7747641aa | 342 | } |
| frank26080115 | 0:84d7747641aa | 343 | return SUCCESS; |
| frank26080115 | 0:84d7747641aa | 344 | } |
| frank26080115 | 0:84d7747641aa | 345 | |
| frank26080115 | 0:84d7747641aa | 346 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 347 | * @brief I2S set bitrate |
| frank26080115 | 0:84d7747641aa | 348 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 349 | * @param[in] bitrate value will be set |
| frank26080115 | 0:84d7747641aa | 350 | * bitrate value should be in range: 0 .. 63 |
| frank26080115 | 0:84d7747641aa | 351 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 352 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 353 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 354 | * @return none |
| frank26080115 | 0:84d7747641aa | 355 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 356 | void I2S_SetBitRate(LPC_I2S_TypeDef *I2Sx, uint8_t bitrate, uint8_t TRMode) |
| frank26080115 | 0:84d7747641aa | 357 | { |
| frank26080115 | 0:84d7747641aa | 358 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 359 | CHECK_PARAM(PARAM_I2S_BITRATE(bitrate)); |
| frank26080115 | 0:84d7747641aa | 360 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 361 | |
| frank26080115 | 0:84d7747641aa | 362 | if(TRMode == I2S_TX_MODE) |
| frank26080115 | 0:84d7747641aa | 363 | { |
| frank26080115 | 0:84d7747641aa | 364 | I2Sx->I2STXBITRATE = bitrate; |
| frank26080115 | 0:84d7747641aa | 365 | } |
| frank26080115 | 0:84d7747641aa | 366 | else |
| frank26080115 | 0:84d7747641aa | 367 | { |
| frank26080115 | 0:84d7747641aa | 368 | I2Sx->I2SRXBITRATE = bitrate; |
| frank26080115 | 0:84d7747641aa | 369 | } |
| frank26080115 | 0:84d7747641aa | 370 | } |
| frank26080115 | 0:84d7747641aa | 371 | |
| frank26080115 | 0:84d7747641aa | 372 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 373 | * @brief Configuration operating mode for I2S |
| frank26080115 | 0:84d7747641aa | 374 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 375 | * @param[in] ModeConfig pointer to I2S_MODEConf_Type will be used to |
| frank26080115 | 0:84d7747641aa | 376 | * configure |
| frank26080115 | 0:84d7747641aa | 377 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 378 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 379 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 380 | * @return none |
| frank26080115 | 0:84d7747641aa | 381 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 382 | void I2S_ModeConfig(LPC_I2S_TypeDef *I2Sx, I2S_MODEConf_Type* ModeConfig, |
| frank26080115 | 0:84d7747641aa | 383 | uint8_t TRMode) |
| frank26080115 | 0:84d7747641aa | 384 | { |
| frank26080115 | 0:84d7747641aa | 385 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 386 | CHECK_PARAM(PARAM_I2S_CLKSEL(ModeConfig->clksel)); |
| frank26080115 | 0:84d7747641aa | 387 | CHECK_PARAM(PARAM_I2S_4PIN(ModeConfig->fpin)); |
| frank26080115 | 0:84d7747641aa | 388 | CHECK_PARAM(PARAM_I2S_MCLK(ModeConfig->mcena)); |
| frank26080115 | 0:84d7747641aa | 389 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 390 | |
| frank26080115 | 0:84d7747641aa | 391 | if (TRMode == I2S_TX_MODE) { |
| frank26080115 | 0:84d7747641aa | 392 | I2Sx->I2STXMODE &= ~0x0F; //clear bit 3:0 in I2STXMODE register |
| frank26080115 | 0:84d7747641aa | 393 | if (ModeConfig->clksel == I2S_CLKSEL_MCLK) { |
| frank26080115 | 0:84d7747641aa | 394 | I2Sx->I2STXMODE |= 0x02; |
| frank26080115 | 0:84d7747641aa | 395 | } |
| frank26080115 | 0:84d7747641aa | 396 | if (ModeConfig->fpin == I2S_4PIN_ENABLE) { |
| frank26080115 | 0:84d7747641aa | 397 | I2Sx->I2STXMODE |= (1 << 2); |
| frank26080115 | 0:84d7747641aa | 398 | } |
| frank26080115 | 0:84d7747641aa | 399 | if (ModeConfig->mcena == I2S_MCLK_ENABLE) { |
| frank26080115 | 0:84d7747641aa | 400 | I2Sx->I2STXMODE |= (1 << 3); |
| frank26080115 | 0:84d7747641aa | 401 | } |
| frank26080115 | 0:84d7747641aa | 402 | } else { |
| frank26080115 | 0:84d7747641aa | 403 | I2Sx->I2SRXMODE &= ~0x0F; //clear bit 3:0 in I2STXMODE register |
| frank26080115 | 0:84d7747641aa | 404 | if (ModeConfig->clksel == I2S_CLKSEL_MCLK) { |
| frank26080115 | 0:84d7747641aa | 405 | I2Sx->I2SRXMODE |= 0x02; |
| frank26080115 | 0:84d7747641aa | 406 | } |
| frank26080115 | 0:84d7747641aa | 407 | if (ModeConfig->fpin == I2S_4PIN_ENABLE) { |
| frank26080115 | 0:84d7747641aa | 408 | I2Sx->I2SRXMODE |= (1 << 2); |
| frank26080115 | 0:84d7747641aa | 409 | } |
| frank26080115 | 0:84d7747641aa | 410 | if (ModeConfig->mcena == I2S_MCLK_ENABLE) { |
| frank26080115 | 0:84d7747641aa | 411 | I2Sx->I2SRXMODE |= (1 << 3); |
| frank26080115 | 0:84d7747641aa | 412 | } |
| frank26080115 | 0:84d7747641aa | 413 | } |
| frank26080115 | 0:84d7747641aa | 414 | } |
| frank26080115 | 0:84d7747641aa | 415 | |
| frank26080115 | 0:84d7747641aa | 416 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 417 | * @brief Configure DMA operation for I2S |
| frank26080115 | 0:84d7747641aa | 418 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 419 | * @param[in] DMAConfig pointer to I2S_DMAConf_Type will be used to configure |
| frank26080115 | 0:84d7747641aa | 420 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 421 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 422 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 423 | * @return none |
| frank26080115 | 0:84d7747641aa | 424 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 425 | void I2S_DMAConfig(LPC_I2S_TypeDef *I2Sx, I2S_DMAConf_Type* DMAConfig, |
| frank26080115 | 0:84d7747641aa | 426 | uint8_t TRMode) |
| frank26080115 | 0:84d7747641aa | 427 | { |
| frank26080115 | 0:84d7747641aa | 428 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 429 | CHECK_PARAM(PARAM_I2S_DMA(DMAConfig->DMAIndex)); |
| frank26080115 | 0:84d7747641aa | 430 | CHECK_PARAM(PARAM_I2S_DMA_DEPTH(DMAConfig->depth)); |
| frank26080115 | 0:84d7747641aa | 431 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 432 | |
| frank26080115 | 0:84d7747641aa | 433 | if (TRMode == I2S_RX_MODE) { |
| frank26080115 | 0:84d7747641aa | 434 | if (DMAConfig->DMAIndex == I2S_DMA_1) { |
| frank26080115 | 0:84d7747641aa | 435 | LPC_I2S->I2SDMA1 = (DMAConfig->depth) << 8; |
| frank26080115 | 0:84d7747641aa | 436 | } else { |
| frank26080115 | 0:84d7747641aa | 437 | LPC_I2S->I2SDMA2 = (DMAConfig->depth) << 8; |
| frank26080115 | 0:84d7747641aa | 438 | } |
| frank26080115 | 0:84d7747641aa | 439 | } else { |
| frank26080115 | 0:84d7747641aa | 440 | if (DMAConfig->DMAIndex == I2S_DMA_1) { |
| frank26080115 | 0:84d7747641aa | 441 | LPC_I2S->I2SDMA1 = (DMAConfig->depth) << 16; |
| frank26080115 | 0:84d7747641aa | 442 | } else { |
| frank26080115 | 0:84d7747641aa | 443 | LPC_I2S->I2SDMA2 = (DMAConfig->depth) << 16; |
| frank26080115 | 0:84d7747641aa | 444 | } |
| frank26080115 | 0:84d7747641aa | 445 | } |
| frank26080115 | 0:84d7747641aa | 446 | } |
| frank26080115 | 0:84d7747641aa | 447 | |
| frank26080115 | 0:84d7747641aa | 448 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 449 | * @brief Enable/Disable DMA operation for I2S |
| frank26080115 | 0:84d7747641aa | 450 | * @param[in] I2Sx: I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 451 | * @param[in] DMAIndex chose what DMA is used, should be: |
| frank26080115 | 0:84d7747641aa | 452 | * - I2S_DMA_1 = 0: DMA1 |
| frank26080115 | 0:84d7747641aa | 453 | * - I2S_DMA_2 = 1: DMA2 |
| frank26080115 | 0:84d7747641aa | 454 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 455 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 456 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 457 | * @param[in] NewState is new state of DMA operation, should be: |
| frank26080115 | 0:84d7747641aa | 458 | * - ENABLE |
| frank26080115 | 0:84d7747641aa | 459 | * - DISABLE |
| frank26080115 | 0:84d7747641aa | 460 | * @return none |
| frank26080115 | 0:84d7747641aa | 461 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 462 | void I2S_DMACmd(LPC_I2S_TypeDef *I2Sx, uint8_t DMAIndex, uint8_t TRMode, |
| frank26080115 | 0:84d7747641aa | 463 | FunctionalState NewState) |
| frank26080115 | 0:84d7747641aa | 464 | { |
| frank26080115 | 0:84d7747641aa | 465 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 466 | CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); |
| frank26080115 | 0:84d7747641aa | 467 | CHECK_PARAM(PARAM_I2S_DMA(DMAIndex)); |
| frank26080115 | 0:84d7747641aa | 468 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 469 | |
| frank26080115 | 0:84d7747641aa | 470 | if (TRMode == I2S_RX_MODE) { |
| frank26080115 | 0:84d7747641aa | 471 | if (DMAIndex == I2S_DMA_1) { |
| frank26080115 | 0:84d7747641aa | 472 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 473 | I2Sx->I2SDMA1 |= 0x01; |
| frank26080115 | 0:84d7747641aa | 474 | else |
| frank26080115 | 0:84d7747641aa | 475 | I2Sx->I2SDMA1 &= ~0x01; |
| frank26080115 | 0:84d7747641aa | 476 | } else { |
| frank26080115 | 0:84d7747641aa | 477 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 478 | I2Sx->I2SDMA2 |= 0x01; |
| frank26080115 | 0:84d7747641aa | 479 | else |
| frank26080115 | 0:84d7747641aa | 480 | I2Sx->I2SDMA2 &= ~0x01; |
| frank26080115 | 0:84d7747641aa | 481 | } |
| frank26080115 | 0:84d7747641aa | 482 | } else { |
| frank26080115 | 0:84d7747641aa | 483 | if (DMAIndex == I2S_DMA_1) { |
| frank26080115 | 0:84d7747641aa | 484 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 485 | I2Sx->I2SDMA1 |= 0x02; |
| frank26080115 | 0:84d7747641aa | 486 | else |
| frank26080115 | 0:84d7747641aa | 487 | I2Sx->I2SDMA1 &= ~0x02; |
| frank26080115 | 0:84d7747641aa | 488 | } else { |
| frank26080115 | 0:84d7747641aa | 489 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 490 | I2Sx->I2SDMA2 |= 0x02; |
| frank26080115 | 0:84d7747641aa | 491 | else |
| frank26080115 | 0:84d7747641aa | 492 | I2Sx->I2SDMA2 &= ~0x02; |
| frank26080115 | 0:84d7747641aa | 493 | } |
| frank26080115 | 0:84d7747641aa | 494 | } |
| frank26080115 | 0:84d7747641aa | 495 | } |
| frank26080115 | 0:84d7747641aa | 496 | |
| frank26080115 | 0:84d7747641aa | 497 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 498 | * @brief Configure IRQ for I2S |
| frank26080115 | 0:84d7747641aa | 499 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 500 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 501 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 502 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 503 | * @param[in] level is the FIFO level that triggers IRQ request |
| frank26080115 | 0:84d7747641aa | 504 | * @return none |
| frank26080115 | 0:84d7747641aa | 505 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 506 | void I2S_IRQConfig(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, uint8_t level) { |
| frank26080115 | 0:84d7747641aa | 507 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 508 | CHECK_PARAM(PARAM_I2S_TRX(TRMode)); |
| frank26080115 | 0:84d7747641aa | 509 | CHECK_PARAM(PARAM_I2S_IRQ_LEVEL(level)); |
| frank26080115 | 0:84d7747641aa | 510 | |
| frank26080115 | 0:84d7747641aa | 511 | if (TRMode == I2S_RX_MODE) { |
| frank26080115 | 0:84d7747641aa | 512 | I2Sx->I2SIRQ |= (level << 8); |
| frank26080115 | 0:84d7747641aa | 513 | } else { |
| frank26080115 | 0:84d7747641aa | 514 | I2Sx->I2SIRQ |= (level << 16); |
| frank26080115 | 0:84d7747641aa | 515 | } |
| frank26080115 | 0:84d7747641aa | 516 | } |
| frank26080115 | 0:84d7747641aa | 517 | |
| frank26080115 | 0:84d7747641aa | 518 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 519 | * @brief Enable/Disable IRQ for I2S |
| frank26080115 | 0:84d7747641aa | 520 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 521 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 522 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 523 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 524 | * @param[in] NewState is new state of DMA operation, should be: |
| frank26080115 | 0:84d7747641aa | 525 | * - ENABLE |
| frank26080115 | 0:84d7747641aa | 526 | * - DISABLE |
| frank26080115 | 0:84d7747641aa | 527 | * @return none |
| frank26080115 | 0:84d7747641aa | 528 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 529 | void I2S_IRQCmd(LPC_I2S_TypeDef *I2Sx, uint8_t TRMode, FunctionalState NewState) { |
| frank26080115 | 0:84d7747641aa | 530 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 531 | CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); |
| frank26080115 | 0:84d7747641aa | 532 | |
| frank26080115 | 0:84d7747641aa | 533 | if (TRMode == I2S_RX_MODE) { |
| frank26080115 | 0:84d7747641aa | 534 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 535 | I2Sx->I2SIRQ |= 0x01; |
| frank26080115 | 0:84d7747641aa | 536 | else |
| frank26080115 | 0:84d7747641aa | 537 | I2Sx->I2SIRQ &= ~0x01; |
| frank26080115 | 0:84d7747641aa | 538 | //Enable DMA |
| frank26080115 | 0:84d7747641aa | 539 | |
| frank26080115 | 0:84d7747641aa | 540 | } else { |
| frank26080115 | 0:84d7747641aa | 541 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 542 | I2Sx->I2SIRQ |= 0x02; |
| frank26080115 | 0:84d7747641aa | 543 | else |
| frank26080115 | 0:84d7747641aa | 544 | I2Sx->I2SIRQ &= ~0x02; |
| frank26080115 | 0:84d7747641aa | 545 | } |
| frank26080115 | 0:84d7747641aa | 546 | } |
| frank26080115 | 0:84d7747641aa | 547 | |
| frank26080115 | 0:84d7747641aa | 548 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 549 | * @brief Get I2S interrupt status |
| frank26080115 | 0:84d7747641aa | 550 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 551 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 552 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 553 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 554 | * @return FunctionState should be: |
| frank26080115 | 0:84d7747641aa | 555 | * - ENABLE: interrupt is enable |
| frank26080115 | 0:84d7747641aa | 556 | * - DISABLE: interrupt is disable |
| frank26080115 | 0:84d7747641aa | 557 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 558 | FunctionalState I2S_GetIRQStatus(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode) |
| frank26080115 | 0:84d7747641aa | 559 | { |
| frank26080115 | 0:84d7747641aa | 560 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 561 | if(TRMode == I2S_TX_MODE) |
| frank26080115 | 0:84d7747641aa | 562 | return (FunctionalState)((I2Sx->I2SIRQ >> 1)&0x01); |
| frank26080115 | 0:84d7747641aa | 563 | else |
| frank26080115 | 0:84d7747641aa | 564 | return (FunctionalState)((I2Sx->I2SIRQ)&0x01); |
| frank26080115 | 0:84d7747641aa | 565 | } |
| frank26080115 | 0:84d7747641aa | 566 | |
| frank26080115 | 0:84d7747641aa | 567 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 568 | * @brief Get I2S interrupt depth |
| frank26080115 | 0:84d7747641aa | 569 | * @param[in] I2Sx I2S peripheral selected, should be: LPC_I2S |
| frank26080115 | 0:84d7747641aa | 570 | * @param[in] TRMode is transmit/receive mode, should be: |
| frank26080115 | 0:84d7747641aa | 571 | * - I2S_TX_MODE = 0: transmit mode |
| frank26080115 | 0:84d7747641aa | 572 | * - I2S_RX_MODE = 1: receive mode |
| frank26080115 | 0:84d7747641aa | 573 | * @return depth of FIFO level on which to create an irq request |
| frank26080115 | 0:84d7747641aa | 574 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 575 | uint8_t I2S_GetIRQDepth(LPC_I2S_TypeDef *I2Sx,uint8_t TRMode) |
| frank26080115 | 0:84d7747641aa | 576 | { |
| frank26080115 | 0:84d7747641aa | 577 | CHECK_PARAM(PARAM_I2Sx(I2Sx)); |
| frank26080115 | 0:84d7747641aa | 578 | if(TRMode == I2S_TX_MODE) |
| frank26080115 | 0:84d7747641aa | 579 | return (((I2Sx->I2SIRQ)>>16)&0xFF); |
| frank26080115 | 0:84d7747641aa | 580 | else |
| frank26080115 | 0:84d7747641aa | 581 | return (((I2Sx->I2SIRQ)>>8)&0xFF); |
| frank26080115 | 0:84d7747641aa | 582 | } |
| frank26080115 | 0:84d7747641aa | 583 | /** |
| frank26080115 | 0:84d7747641aa | 584 | * @} |
| frank26080115 | 0:84d7747641aa | 585 | */ |
| frank26080115 | 0:84d7747641aa | 586 | |
| frank26080115 | 0:84d7747641aa | 587 | #endif /* _I2S */ |
| frank26080115 | 0:84d7747641aa | 588 | |
| frank26080115 | 0:84d7747641aa | 589 | /** |
| frank26080115 | 0:84d7747641aa | 590 | * @} |
| frank26080115 | 0:84d7747641aa | 591 | */ |
| frank26080115 | 0:84d7747641aa | 592 | |
| frank26080115 | 0:84d7747641aa | 593 | /* --------------------------------- End Of File ------------------------------ */ |
| frank26080115 | 0:84d7747641aa | 594 |