void cpu_deinit_all() {
//** ADC_DeInit(LPC_ADC);
CAN_DeInit(LPC_CAN1);
CAN_DeInit(LPC_CAN2);
EMAC_DeInit();
EXTI_DeInit();
I2C_DeInit(LPC_I2C0);
I2C_DeInit(LPC_I2C1);
I2C_DeInit(LPC_I2C2);
I2S_DeInit(LPC_I2S);
NVIC_DeInit();
NVIC_SCBDeInit();
PWM_DeInit(LPC_PWM1);
QEI_DeInit(LPC_QEI);
//** RIT_DeInit(LPC_RIT);
RTC_DeInit(LPC_RTC);
SPI_DeInit(LPC_SPI);
SSP_DeInit(LPC_SSP0);
SSP_DeInit(LPC_SSP1);
UART_DeInit(LPC_UART0);
UART_DeInit((LPC_UART_TypeDef *) LPC_UART1);
//** UART_DeInit(LPC_UART2);
//** UART_DeInit(LPC_UART3);
TIM_DeInit(LPC_TIM0);
TIM_DeInit(LPC_TIM1);
//** TIM_DeInit(LPC_TIM2);
//** TIM_DeInit(LPC_TIM3);
}
/*********************************************************************//**
* @brief c_entry: Main program body
* @param[in] None
* @return int
**********************************************************************/
int c_entry(void)
{
uint32_t i;
GPDMA_Channel_CFG_Type GPDMACfg;
I2S_MODEConf_Type I2S_ClkConfig;
I2S_CFG_Type I2S_ConfigStruct;
I2S_DMAConf_Type I2S_DMAStruct;
PINSEL_CFG_Type PinCfg;
/* Initialize debug via UART0
* – 115200bps
* – 8 data bit
* – No parity
* – 1 stop bit
* – No flow control
*/
debug_frmwrk_init();
//print menu screen
print_menu();
//Initialize buffer
Buffer_Init();
_DBG_("Press '1' to initialize buffer...");
while(_DG !='1');
_DBG_("Transmit Buffer init: ...");
for(i=0;i<BUFFER_SIZE;i++)
{
_DBH32(I2STXBuffer[i]);_DBG_("");
}
_DBG_("Receive Buffer init: ...");
for(i=0;i<BUFFER_SIZE;i++)
{
_DBH32(I2SRXBuffer[i]);_DBG_("");
}
/* Pin configuration:
* Assign: - P0.4 as I2SRX_CLK
* - P0.5 as I2SRX_WS
* - P0.6 as I2SRX_SDA
* - P0.7 as I2STX_CLK
* - P0.8 as I2STX_WS
* - P0.9 as I2STX_SDA
*/
PinCfg.Funcnum = 1;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Pinnum = 4;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 5;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 6;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 7;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 8;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 9;
PINSEL_ConfigPin(&PinCfg);
/* Initialize I2S */
I2S_Init(LPC_I2S);
//Setup for I2S: RX is similar with TX
/* setup:
* - wordwidth: 16 bits
* - stereo mode
* - master mode for I2S_TX and slave for I2S_RX
* - ws_halfperiod is 31
* - not use mute mode
* - use reset and stop mode
* - select the fractional rate divider clock output as the source,
* - disable 4-pin mode
* - MCLK ouput is disable
* - Frequency = 44.1 kHz
* Because we use mode I2STXMODE[3:0]= 0000, I2SDAO[5]=0 and
* I2SRX[3:0]=0000, I2SDAI[5] = 1. So we have I2SRX_CLK = I2STX_CLK
* --> I2SRXBITRATE = 1 (not divide TXCLK to produce RXCLK)
*/
/* Audio Config*/
I2S_ConfigStruct.wordwidth = I2S_WORDWIDTH_16;
I2S_ConfigStruct.mono = I2S_STEREO;
I2S_ConfigStruct.stop = I2S_STOP_ENABLE;
I2S_ConfigStruct.reset = I2S_RESET_ENABLE;
I2S_ConfigStruct.ws_sel = I2S_MASTER_MODE;
I2S_ConfigStruct.mute = I2S_MUTE_DISABLE;
I2S_Config(LPC_I2S,I2S_TX_MODE,&I2S_ConfigStruct);
I2S_ConfigStruct.ws_sel = I2S_SLAVE_MODE;
I2S_Config(LPC_I2S,I2S_RX_MODE,&I2S_ConfigStruct);
/* Clock Mode Config*/
I2S_ClkConfig.clksel = I2S_CLKSEL_FRDCLK;
I2S_ClkConfig.fpin = I2S_4PIN_DISABLE;
I2S_ClkConfig.mcena = I2S_MCLK_DISABLE;
I2S_ModeConfig(LPC_I2S,&I2S_ClkConfig,I2S_TX_MODE);
I2S_ModeConfig(LPC_I2S,&I2S_ClkConfig,I2S_RX_MODE);
/* Set up frequency and bit rate*/
I2S_FreqConfig(LPC_I2S, 44100, I2S_TX_MODE);
I2S_SetBitRate(LPC_I2S, 0, I2S_RX_MODE);
_DBG_("Press '2' to initialize DMA...");
while(_DG !='2');
/* GPDMA Interrupt configuration section ------------------------------------------------- */
/* Initialize GPDMA controller */
GPDMA_Init();
LPC_GPDMA->DMACConfig = 0x01;
/* Setting GPDMA interrupt */
// Disable interrupt for DMA
NVIC_DisableIRQ (DMA_IRQn);
/* preemption = 1, sub-priority = 1 */
NVIC_SetPriority(DMA_IRQn, ((0x01<<3)|0x01));
/*
* Configure GPDMA channel 0 -------------------------------------------------------------
* Used for I2S Transmit
*/
// Setup GPDMA channel --------------------------------
// channel 0
GPDMACfg.ChannelNum = 0;
// Source memory
GPDMACfg.SrcMemAddr = DMA_SRC;
// Destination memory
GPDMACfg.DstMemAddr = 0;
// Transfer size
GPDMACfg.TransferSize = BUFFER_SIZE;
// Transfer width - unused
GPDMACfg.TransferWidth = 0;
// Transfer type
GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_M2P;
// Source connection
GPDMACfg.SrcConn = 0;
// Destination connection - unused
GPDMACfg.DstConn = GPDMA_CONN_I2S_Channel_0;
// Linker List Item - unused
GPDMACfg.DMALLI = 0;
GPDMA_Setup(&GPDMACfg);
_DBG_("DMA Channel 0 setting finised...");
/* Reset terminal counter */
Channel0_TC = 0;
/* Reset Error counter */
Channel0_Err = 0;
/*
* Configure GPDMA channel 1 -------------------------------------------------------------
* Used for UART0 Receive
*/
// Setup GPDMA channel --------------------------------
// channel 1
GPDMACfg.ChannelNum = 1;
// Source memory - unused
GPDMACfg.SrcMemAddr = 0;
// Destination memory
GPDMACfg.DstMemAddr = DMA_DST;
// Transfer size
GPDMACfg.TransferSize = BUFFER_SIZE+1;
// Transfer width - unused
GPDMACfg.TransferWidth = 0;
// Transfer type
GPDMACfg.TransferType = GPDMA_TRANSFERTYPE_P2M;
// Source connection - unused
GPDMACfg.SrcConn = GPDMA_CONN_I2S_Channel_1;
// Destination connection
GPDMACfg.DstConn = 0;
// Linker List Item - unused
GPDMACfg.DMALLI = 0;
GPDMA_Setup(&GPDMACfg);
_DBG_("DMA Channel 1 setting finised...");
/* Reset terminal counter */
Channel1_TC = 0;
/* Reset Error counter */
Channel1_Err = 0;
// Enable GPDMA channel 0 & 1
GPDMA_ChannelCmd(0, ENABLE);
GPDMA_ChannelCmd(1, ENABLE);
// Enable interrupt for DMA
NVIC_EnableIRQ (DMA_IRQn);
_DBG_("Press '3' to start I2S transfer process...");
while(_DG !='3');
_DBG_("I2S Start...");
I2S_DMAStruct.DMAIndex = I2S_DMA_2;
I2S_DMAStruct.depth = 8;
I2S_DMAConfig(LPC_I2S, &I2S_DMAStruct, I2S_RX_MODE);
I2S_DMAStruct.DMAIndex = I2S_DMA_1;
I2S_DMAStruct.depth = 1;
I2S_DMAConfig(LPC_I2S, &I2S_DMAStruct, I2S_TX_MODE);
I2S_Start(LPC_I2S);
I2S_DMACmd(LPC_I2S, I2S_DMA_2, I2S_RX_MODE, ENABLE);
I2S_DMACmd(LPC_I2S, I2S_DMA_1, I2S_TX_MODE, ENABLE);
while ((Channel0_TC == 0)||(Channel1_TC == 0) );
_DBG_("I2S Finish...");
_DBG_("Receive Buffer data: ...");
for(i=0;i<BUFFER_SIZE+1;i++)
{
_DBH32(I2SRXBuffer[i]);
if(I2SRXBuffer[i]==0)
{
_DBG_(" ->Dummy data");
}
else _DBG_("");
}
I2S_DeInit(LPC_I2S);
while(1);
return 1;
}
/*********************************************************************//**
* @brief c_entry: Main I2S program body
* @param[in] None
* @return int
**********************************************************************/
int c_entry (void) {
uint32_t i;
uint32_t dummy=0;
I2S_MODEConf_Type I2S_ClkConfig;
I2S_CFG_Type I2S_ConfigStruct;
PINSEL_CFG_Type PinCfg;
/* Initialize debug via UART0
* – 115200bps
* – 8 data bit
* – No parity
* – 1 stop bit
* – No flow control
*/
debug_frmwrk_init();
//print menu screen
print_menu();
Buffer_Init();
/* Pin configuration:
* Assign: - P0.4 as I2SRX_CLK
* - P0.5 as I2SRX_WS
* - P0.6 as I2SRX_SDA
* - P0.7 as I2STX_CLK
* - P0.8 as I2STX_WS
* - P0.9 as I2STX_SDA
*/
PinCfg.Funcnum = 1;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Pinnum = 4;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 5;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 6;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 7;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 8;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 9;
PINSEL_ConfigPin(&PinCfg);
I2S_Init(LPC_I2S);
//Setup for I2S: RX is similar with TX
/* setup:
* - wordwidth: 16 bits
* - stereo mode
* - master mode for I2S_TX and slave for I2S_RX
* - ws_halfperiod is 31
* - not use mute mode
* - use reset and stop mode
* - select the fractional rate divider clock output as the source,
* - disable 4-pin mode
* - MCLK ouput is disable
* - Frequency = 44.1 kHz (x=8,y=51 - automatic setting)
* Because we use mode I2STXMODE[3:0]= 0000, I2SDAO[5]=0 and
* I2SRX[3:0]=0000, I2SDAI[5] = 1. So we have I2SRX_CLK = I2STX_CLK
* --> I2SRXBITRATE = 1 (not divide TXCLK to produce RXCLK)
*/
/* Audio Config*/
I2S_ConfigStruct.wordwidth = I2S_WORDWIDTH_16;
I2S_ConfigStruct.mono = I2S_STEREO;
I2S_ConfigStruct.stop = I2S_STOP_ENABLE;
I2S_ConfigStruct.reset = I2S_RESET_ENABLE;
I2S_ConfigStruct.ws_sel = I2S_MASTER_MODE;
I2S_ConfigStruct.mute = I2S_MUTE_DISABLE;
I2S_Config(LPC_I2S,I2S_TX_MODE,&I2S_ConfigStruct);
I2S_ConfigStruct.ws_sel = I2S_SLAVE_MODE;
I2S_Config(LPC_I2S,I2S_RX_MODE,&I2S_ConfigStruct);
/* Clock Mode Config*/
I2S_ClkConfig.clksel = I2S_CLKSEL_FRDCLK;
I2S_ClkConfig.fpin = I2S_4PIN_DISABLE;
I2S_ClkConfig.mcena = I2S_MCLK_DISABLE;
I2S_ModeConfig(LPC_I2S,&I2S_ClkConfig,I2S_TX_MODE);
I2S_ModeConfig(LPC_I2S,&I2S_ClkConfig,I2S_RX_MODE);
/* Set up frequency and bit rate*/
I2S_FreqConfig(LPC_I2S, 44100, I2S_TX_MODE);
I2S_SetBitRate(LPC_I2S, 0, I2S_RX_MODE);
I2S_Start(LPC_I2S);
while(I2STXDone == 0||I2SRXDone == 0){
if(I2STXDone ==0){
I2S_Send(LPC_I2S,I2STXBuffer[I2SWriteLength]);
I2SWriteLength +=1;
if(I2SWriteLength == BUFFER_SIZE) I2STXDone = 1;
}
if(I2SRXDone == 0)
{
while(I2S_GetLevel(LPC_I2S,I2S_RX_MODE)==0x00);
if(dummy == 0) //dummy receive
{
i = I2S_Receive(LPC_I2S);
dummy = 1;
}
else
{
*(uint32_t *)(&I2SRXBuffer[I2SReadLength]) = I2S_Receive(LPC_I2S);
I2SReadLength +=1;
}
if(I2SReadLength == BUFFER_SIZE) I2SRXDone = 1;
}
}
/* print received data */
_DBG_("Receive Buffer data: ...");
for(i=0;i<BUFFER_SIZE;i++)
{
_DBH32(I2SRXBuffer[i]);_DBG_("");
}
/* Validate received data */
if(Buffer_Verify())
{
_DBG_("Verify Buffer: OK...");
}
else
{
_DBG_("Verify Buffer: ERROR...");
}
I2S_DeInit(LPC_I2S);
while(1);
}
