/**
* @brief Erase whole SPI flash memory.
* @param spi is the base address of SPI module.
* @return None.
* @note Before calling this function, the transaction length (data width) must be configured as 8 bits.
*/
void SpiFlash_ChipErase(SPI_T *spi)
{
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0x06: Write enable */
SPI_WRITE_TX0(spi, 0x06);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
__NOP();
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0xC7: Chip erase */
SPI_WRITE_TX0(spi, 0xC7);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
}
/**
* @brief Read SPI flash memory.
* @param spi is the base address of SPI module.
* @param u32StartAddress is the start address.
* @param au8DataBuffer is the pointer of destination buffer.
* @param u32ByteCount is the total data count.
* @return None.
* @note Before calling this function, the transaction length (data width) must be configured as 8 bits.
*/
void SpiFlash_ReadData(SPI_T *spi, uint32_t u32StartAddress, uint8_t *au8DataBuffer, uint32_t u32ByteCount)
{
uint32_t u32RxCounter;
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0x03: Read data */
SPI_WRITE_TX0(spi, 0x03);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send 24-bit start address */
/* Send the first 8 address bits */
SPI_WRITE_TX0(spi, (u32StartAddress >> 16) & 0xFF);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send the second 8 address bits */
SPI_WRITE_TX0(spi, (u32StartAddress >> 8) & 0xFF);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send the third 8 address bits */
SPI_WRITE_TX0(spi, u32StartAddress & 0xFF);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Reset RX data counter */
u32RxCounter = 0;
while(u32RxCounter < u32ByteCount)
{
/* Send SPI bus clock to get data from SPI flash */
SPI_WRITE_TX0(spi, 0x00);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Read data */
au8DataBuffer[u32RxCounter++] = SPI_READ_RX0(spi);
}
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
}
void ConfigHWSpiport(void)
{
// plese ensure has opened the system clock of SPI1 mode.
CLK_EnableModuleClock(SPI1_MODULE);
//1st . config pin MFP function
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* SPI1: PC15=MOSI0, PD0=MISO0, PD1=CLK */
//note :there is a qustion that for the Register option must be "OR" bits.
//othewith, will occured changed other Hardwave bits.
SYS->GPC_MFPH |= (SYS_GPC_MFPH_PC15MFP_SPI1_MOSI0);
SYS->GPD_MFPL |= (SYS_GPD_MFPL_PD0MFP_SPI1_MISO0 | SYS_GPD_MFPL_PD1MFP_SPI1_CLK);
//2st . config the SPI1 of Hardwave Port
/* Configure SPI1 as a master, MSB first, 8-bit transaction, SPI Mode-0 timing, clock is 400KHz */
SPI_Open(SPI1, SPI_MASTER, SPI_MODE_0, 8, 400000); //open SPI1 and config it.
SPI_DisableAutoSS(SPI1);//closed the ss by hardwave and give it for softwave ctrl that well used ctrl SS/HSA pin select ADE7878 into the SPI mode.
SPI_TRIGGER(SPI1);//start SPI1 transf.
//3st . config the SS/HSA pin
GPIO_SetMode(PC, BIT12, GPIO_MODE_OUTPUT);// SP1 SS pin by SOFTWAVE ctrl
PC12=1;// hold the pin hight..
//2016 01 03 make by wangjunwei in bittel.
}
void SPIClass::begin() {
if(init_flag==0) init();
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable IP clock */
CLK_EnableModuleClock(module);
/* Select IP clock source and clock divider */
CLK_SetModuleClock(module,clksel,0);
/* Lock protected registers */
SYS_LockReg();
/* Configure as a master, clock idle low, falling clock edge Tx, rising edge Rx and 8-bit transaction */
/* Set IP clock divider. SPI clock rate = 4MHz */
SPI_Open(spi, SPI_MASTER, SPI_MODE_0, 8, 4000000);
#if defined(__NUC240__) | defined(__NANO100__) | defined(__NUC131__)
SPI_EnableFIFO(spi,12,12);
#endif
setBitOrder(SS, MSBFIRST);
#if defined(__M451__)
SPI_ClearRxFIFO(spi);
SPI_TRIGGER(spi);
#endif
}
/**
* @brief Write SPI flash status register.
* @param spi is the base address of SPI module.
* @param u32Value is the value attempt to write to status register.
* @return None.
* @note Before calling this function, the transaction length (data width) must be configured as 8 bits.
*/
void SpiFlash_WriteStatusReg(SPI_T *spi, uint32_t u32Value)
{
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0x06: Write enable */
SPI_WRITE_TX0(spi, 0x06);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
__NOP();
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0x01: Write status register */
SPI_WRITE_TX0(spi, 0x01);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* write to status register 1 */
SPI_WRITE_TX0(spi, u32Value & 0xFF);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* write to status register 2 */
SPI_WRITE_TX0(spi, (u32Value >> 8) & 0xFF);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
}
void SPIClass::beginTransaction(uint8_t pin, SPISettings settings)
{
if(init_flag==0);// init();
/* Configure as a master, clock idle low, falling clock edge Tx, rising edge Rx and 8-bit transaction */
/* Set IP clock divider. SPI clock rate = 4MHz */
SPI_Open(spi, SPI_MASTER, settings.datmode, 8, settings.clock);
//SPI_EnableFIFO(spi,12,12);
setBitOrder(SS, settings.border);
//#if defined(__M451__) | defined(__NANO100__)
SPI_ClearRxFIFO(spi);
SPI_TRIGGER(spi);
//#endif
}
/**
* @brief Read SPI flash manufacturer ID and device ID.
* @param spi is the base address of SPI module.
* @return High byte is manufacturer ID; low byte is device ID.
* @note Before calling this function, the transaction length (data width) must be configured as 8 bits.
*/
uint32_t SpiFlash_ReadMidDid(SPI_T *spi)
{
uint32_t u32MID_DID;
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0x90: Read Manufacturer/Device ID */
SPI_WRITE_TX0(spi, 0x90);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send total 24 '0' dummy bits */
/* Send the first 8 dummy bits */
SPI_WRITE_TX0(spi, 0x00);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send the second 8 dummy bits */
SPI_WRITE_TX0(spi, 0x00);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send the third 8 dummy bits */
SPI_WRITE_TX0(spi, 0x00);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send SPI bus clock to get the Manufacturer ID */
SPI_WRITE_TX0(spi, 0x00);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Get the Manufacturer ID */
u32MID_DID = spi->RX0 << 8;
/* Send SPI bus clock to get the Device ID */
SPI_WRITE_TX0(spi, 0x00);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Get the Device ID */
u32MID_DID |= spi->RX0;
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
return u32MID_DID;
}
/**
* @brief Read SPI flash status register.
* @param spi is the base address of SPI module.
* @return Status register value.
* @note Before calling this function, the transaction length (data width) must be configured as 8 bits.
*/
uint32_t SpiFlash_ReadStatusReg(SPI_T *spi)
{
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0x05: Read status register */
SPI_WRITE_TX0(spi, 0x05);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send SPI bus clock to read status register */
SPI_WRITE_TX0(spi, 0x00);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
/* Return the status register value */
return (spi->RX0);
}
int spi_write_packet(SPI_T *spi, uint8_t *data, int len)
{
int timeout, i;
for(i=0; len != 0; i++, len--) {
SPI_WRITE_TX0(spi, data[i]);
SPI_TRIGGER(spi);
timeout = SPI_TIMEOUT;
while(SPI_IS_BUSY(spi)) {
if(!timeout--) {
return(-1);
}
}
}
return(0);
}
int spi_read_packet(SPI_T *spi, uint8_t *data, int len)
{
int timeout, i;
for(i=0; len != 0; i++, len--) {
timeout = SPI_TIMEOUT;
SPI_WRITE_TX0(spi, 0);
SPI_TRIGGER(spi);
while(SPI_IS_BUSY(spi)) {
if(!timeout--) {
printf("spi_read_packet timeout (len = %d)\n",len);
return(-1);
}
}
data[i] = SPI_READ_RX0(spi);
}
return(0);
}
/**
* @brief Perform SPI flash page program.
* @param spi is the base address of SPI module.
* @param u32StartAddress is the start address.
* @param au8DataBuffer is the pointer of source data.
* @param u32ByteCount is the total data count. The maximum number is 256.
* @return None.
* @note Before calling this function, the transaction length (data width) must be configured as 8 bits.
*/
void SpiFlash_PageProgram(SPI_T *spi, uint32_t u32StartAddress, uint8_t *au8DataBuffer, uint32_t u32ByteCount)
{
uint32_t u32Counter;
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0x06: Write enable */
SPI_WRITE_TX0(spi, 0x06);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
__NOP();
/* /CS: active */
SPI_SET_SS_LOW(spi);
/* Send command 0x02: Page program */
SPI_WRITE_TX0(spi, 0x02);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send 24-bit start address */
/* Send the first 8 address bits */
SPI_WRITE_TX0(spi, (u32StartAddress >> 16) & 0xFF);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send the second 8 address bits */
SPI_WRITE_TX0(spi, (u32StartAddress >> 8) & 0xFF);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Send the third 8 address bits */
SPI_WRITE_TX0(spi, u32StartAddress & 0xFF);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
/* Check busy state */
while(SPI_IS_BUSY(spi));
u32Counter = 0;
while(u32Counter < u32ByteCount)
{
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* Write one byte to SPI flash */
SPI_WRITE_TX0(spi, au8DataBuffer[u32Counter++]);
/* Trigger SPI transfer */
SPI_TRIGGER(spi);
}
/* Check busy state */
while(SPI_IS_BUSY(spi));
/* /CS: inactive */
SPI_SET_SS_HIGH(spi);
}
/* Main */
int main(void)
{
uint32_t u32ByteCount, u32FlashAddress, u32PageNumber;
uint32_t nError = 0;
uint16_t u16ID;
/* Init System, IP clock and multi-function I/O */
SYS_Init();
/* Init UART to 115200-8n1 for print message */
UART_Open(UART0, 115200);
/* Configure SPI_FLASH_PORT as a master, MSB first, 8-bit transaction, SPI Mode-0 timing, clock is 2MHz */
SPI_Open(SPI_FLASH_PORT, SPI_MASTER, SPI_MODE_0, 8, 2000000);
/* Enable the automatic hardware slave select function. Select the SS0 pin and configure as low-active. */
SPI_EnableAutoSS(SPI_FLASH_PORT, SPI_SS0, SPI_SS_ACTIVE_LOW);
SPI_TRIGGER(SPI_FLASH_PORT);
printf("\n+------------------------------------------------------------------------+\n");
printf("| NUC472/NUC442 SPI Dual Mode with Flash Sample Code |\n");
printf("+------------------------------------------------------------------------+\n");
/* Wait ready */
SpiFlash_WaitReady();
if((u16ID = SpiFlash_ReadMidDid()) != 0x1C14) {
printf("Wrong ID, 0x%x\n", u16ID);
return -1;
} else
printf("Flash found: EN25QH16 ...\n");
printf("Erase chip ...");
/* Erase SPI flash */
SpiFlash_ChipErase();
/* Wait ready */
SpiFlash_WaitReady();
printf("[OK]\n");
/* init source data buffer */
for(u32ByteCount=0; u32ByteCount<TEST_LENGTH; u32ByteCount++) {
SrcArray[u32ByteCount] = u32ByteCount;
}
printf("Start to normal write data to Flash ...");
/* Program SPI flash */
u32FlashAddress = 0;
for(u32PageNumber=0; u32PageNumber<TEST_NUMBER; u32PageNumber++) {
/* page program */
SpiFlash_NormalPageProgram(u32FlashAddress, SrcArray);
SpiFlash_WaitReady();
u32FlashAddress += 0x100;
}
printf("[OK]\n");
/* clear destination data buffer */
for(u32ByteCount=0; u32ByteCount<TEST_LENGTH; u32ByteCount++) {
DestArray[u32ByteCount] = 0;
}
printf("Dual Read & Compare ...");
/* Read SPI flash */
u32FlashAddress = 0;
for(u32PageNumber=0; u32PageNumber<TEST_NUMBER; u32PageNumber++) {
/* page read */
SpiFlash_DualFastRead(u32FlashAddress, DestArray);
u32FlashAddress += 0x100;
for(u32ByteCount=0; u32ByteCount<TEST_LENGTH; u32ByteCount++) {
if(DestArray[u32ByteCount] != SrcArray[u32ByteCount])
nError ++;
}
}
if(nError == 0)
printf("[OK]\n");
else
printf("[FAIL]\n");
while(1);
}
int main(void)
{
uint32_t u32DataCount, u32TestCount, u32Err;
/* Init System, IP clock and multi-function I/O */
SYS_Init();
/* Init UART to 115200-8n1 for print message */
UART_Open(UART0, 115200);
/* Configure SPI0 as a master, MSB first, 32-bit transaction, SPI Mode-0 timing, clock is 2MHz */
SPI_Open(SPI0, SPI_MASTER, SPI_MODE_0, 32, 2000000);
/* Enable the automatic hardware slave select function. Select the SPI0_SS0 pin and configure as low-active. */
SPI_EnableAutoSS(SPI0, SPI_SS0, SPI_SS_ACTIVE_LOW);
/* Configure SPI1 as a slave, MSB first, 32-bit transaction, SPI Mode-0 timing, clock is 4Mhz */
SPI_Open(SPI1, SPI_SLAVE, SPI_MODE_0, 32, 4000000);
/* Configure SPI1 as a low level active device. */
SPI_SET_SS0_LOW(SPI1);
printf("\n\n");
printf("+----------------------------------------------------------------------+\n");
printf("| SPI Driver Sample Code |\n");
printf("+----------------------------------------------------------------------+\n");
printf("\n");
printf("Configure SPI0 as a master and SPI1 as a slave.\n");
printf("Data width of a transaction: 32\n");
printf("SPI clock rate: %d Hz\n", SPI_GetBusClock(SPI0));
printf("The I/O connection for SPI0/SPI1 loopback:\n");
printf(" SPI0_SS (PE.4) <--> SPI1_SS(PC.12)\n SPI0_CLK(PE.5) <--> SPI1_CLK(PD.1)\n");
printf(" SPI0_MISO(PE.2) <--> SPI1_MISO(PD.0)\n SPI0_MOSI(PE.3) <--> SPI1_MOSI(PC.15)\n\n");
printf("Please connect SPI0 with SPI1, and press any key to start transmission ...");
getchar();
printf("\n");
printf("\nSPI0/1 Loopback test ");
/* Enable the SPI1 unit transfer interrupt. */
SPI_EnableInt(SPI1, SPI_UNITIEN_MASK);
NVIC_EnableIRQ(SPI1_IRQn);
SPI_TRIGGER(SPI1);
u32Err = 0;
for(u32TestCount=0; u32TestCount<10000; u32TestCount++) {
/* set the source data and clear the destination buffer */
for(u32DataCount=0; u32DataCount<TEST_COUNT; u32DataCount++) {
g_au32SourceData[u32DataCount] = u32DataCount;
g_au32DestinationData[u32DataCount] = 0;
}
u32DataCount=0;
SPI1_INT_Flag = 0;
if((u32TestCount&0x1FF) == 0) {
putchar('.');
}
SPI_TRIGGER(SPI0);
/* write the first data of source buffer to Tx register of SPI0. And start transmission. */
SPI_WRITE_TX(SPI0, g_au32SourceData[0]);
while(1) {
if(SPI1_INT_Flag==1) {
SPI1_INT_Flag = 0;
if(u32DataCount<(TEST_COUNT-1)) {
/* Read the previous retrieved data and trigger next transfer. */
g_au32DestinationData[u32DataCount] = SPI_READ_RX(SPI1);
u32DataCount++;
/* Write data to SPI0 Tx buffer and trigger the transfer */
SPI_WRITE_TX(SPI0, g_au32SourceData[u32DataCount]);
} else {
/* Just read the previous retrieved data but trigger next transfer, because this is the last transfer. */
g_au32DestinationData[u32DataCount] = SPI_READ_RX(SPI1);
break;
}
}
}
/* Check the received data */
for(u32DataCount=0; u32DataCount<TEST_COUNT; u32DataCount++) {
if(g_au32DestinationData[u32DataCount]!=g_au32SourceData[u32DataCount])
u32Err = 1;
}
if(u32Err)
break;
}
/* Disable the SPI1 unit transfer interrupt. */
SPI_DisableInt(SPI1, SPI_UNITIEN_MASK);
NVIC_DisableIRQ(SPI1_IRQn);
if(u32Err)
printf(" [FAIL]\n\n");
else
printf(" [PASS]\n\n");
printf("\n\nExit SPI driver sample code.\n");
while(1);
}