void PortBSpiInit(void)
{
LCD_CS = 0;
SpiSendByte (0x40);
SpiSendByte (0x01);
SpiSendByte (0x00);
LCD_CS = 1;
}
void WritePortB(BYTE tempWr)
{
LCD_CS = 0;
SpiSendByte (0x40);
SpiSendByte (0x13);
SpiSendByte (tempWr);
LCD_CS = 1;
}
void WritePortA(BYTE LcdEnable, BYTE LcdRS)
{
BYTE LcdControl1 = 0x00;
LCD_CS = 0;
SpiSendByte (0x40);
SpiSendByte (0x12);
LcdControl1 |= LcdEnable<<6; // LCD Enable bit position is 1
LcdControl1 |= LcdRS<<7;
SpiSendByte (LcdControl1);
LCD_CS = 1;
}
/* The SPIWrite function transmits a given user buffer over the SPI. */
long SpiWrite_Init(unsigned char *pUserBuffer, unsigned short usLength)
{
unsigned char ucPad = 0;
//
// Figure out the total length of the packet in order to figure out if there is padding or not
//
if(!(usLength & 0x0001))
{
ucPad++;
}
fWlanInterruptDisable();
//while(!WIFI_CS_CHECK()){};
WIFI_CS_LOW();
if (pUserBuffer[6]==0&&pUserBuffer[7]==0x40)
Delay(1);
pUserBuffer[0]=0x01;
pUserBuffer[1]=((usLength+ucPad) & 0xff00) >> 8;
pUserBuffer[2]=(usLength+ucPad) & 0xff;
pUserBuffer[3]=0;
pUserBuffer[4]=0;
long count=0;
for (int i = 0; i < 4; i++)
{
SpiSendByte((uint8_t)pUserBuffer[i]);
count++;
}
if (pUserBuffer[6]==0&&pUserBuffer[7]==0x40)
Delay(1);
for (int i = 4; i< usLength+5; i++)
{
SpiSendByte((uint8_t)pUserBuffer[i]);
count++;
}
if (ucPad >0){
SpiSendByte(0);
count++;
}
// while (SPI_I2S_GetFlagStatus(WIFI_SPI, SPI_I2S_FLAG_RXNE) == RESET);
Delay(10);
WIFI_CS_HIGH();
EXTI_ClearITPendingBit(EXTI_Line8);
//enable EXIT_IRQ from CC3000
fWlanInterruptEnable();
return count;
}
void SpiWriteBytes(SpiDevice *const dev, int numBytes, uint8_t data[]) {
SetChipSelectLow(dev);
for (int byte = 0; byte < numBytes; byte++) {
SpiSendByte(dev, data[byte]);
}
SetChipSelectHigh(dev);
}
/* The SPIWrite function transmits a given user buffer over the SPI. */
long SpiReceive(unsigned char *pUserBuffer)
{
//disable interrrupt
fWlanInterruptDisable();
WIFI_CS_LOW();
//Delay(1);
wlan_tx_buffer[0]=0x03;
wlan_tx_buffer[1]=0x0;
wlan_tx_buffer[2]=0x0;
wlan_tx_buffer[3]=0x0;
wlan_tx_buffer[4]=0x0;
ubRxMax=5;
ubTxMax=5;
ubTxIndex = 1;
ubRxIndex = 0;
wifi_state=1;//rx header
SpiSendByte(wlan_tx_buffer[0]);//send first next are sent on int
SPI_I2S_ITConfig(WIFI_SPI, SPI_I2S_IT_TXE, ENABLE);
// WIFI_CS_HIGH();
// EXTI_ClearITPendingBit(EXTI_Line8);
// fWlanInterruptEnable();
return 0;//FIXME THIS RETURNED COUNT
}
/* The SPIWrite function transmits a given user buffer over the SPI. */
long SpiWrite(unsigned char *pUserBuffer, unsigned short usLength)
{
unsigned char ucPad = 0;
//
// Figure out the total length of the packet in order to figure out if there is padding or not
//
if(!(usLength & 0x0001))
{
ucPad++;
}
while(!(WIFI_CS_CHECK() && fWlanReadInteruptPin()))
{
Delay(1);
};
fWlanInterruptDisable();
WIFI_CS_LOW();
pUserBuffer[0]=0x01;
pUserBuffer[1]=((usLength+ucPad) & 0xff00) >> 8;
pUserBuffer[2]=(usLength+ucPad) & 0xff;
pUserBuffer[3]=0;
pUserBuffer[4]=0;
if (ucPad >0){
pUserBuffer[usLength+5]=0;
}
ubTxIndex = 1;//index to 1 because I send first byte by hand
ubTxMax = usLength+ucPad+5;
ubRxIndex = 0;//index to 1 because I send first byte by hand
ubRxMax = usLength+ucPad+5;
wifi_state=0;
SpiSendByte((uint8_t)pUserBuffer[0]);//first byte send int send the rest
SPI_I2S_ITConfig(WIFI_SPI, SPI_I2S_IT_TXE, ENABLE);
return 0;//FIXME RETURN COUNT?
}
// 发送数据或指令
// DC : 数据或指令
// info : 发送的信息
void LcdWriteDC(u8 DC, uint8_t info)
{
LcdEnable(TRUE);
if( DC == DATA)
LCD_DC_HIGH();
else
LCD_DC_LOW();
Delaynus(5);
SpiSendByte(info);
LcdEnable(FALSE);
}
/* while the SPI is in IDLE state. */
void SPI2_IRQHandler(void)
{
/* SPI in Receiver mode */
if (SPI_I2S_GetITStatus(WIFI_SPI, SPI_I2S_IT_RXNE) == SET)
{
if (ubRxIndex < ubRxMax && ubRxIndex < SPI_BUFFER_SIZE)
{
/* Receive Transaction data */
wlan_rx_buffer[ubRxIndex++] = SPI_I2S_ReceiveData(WIFI_SPI);
if (wifi_state == 1 )//rx header
{
if(ubRxIndex == 5){
unsigned char lsb_size;
int size;
size=wlan_rx_buffer[3];
lsb_size=wlan_rx_buffer[4];
size = (size << 8) + lsb_size;
for (int i = 0; i < size; i++)
{
wlan_tx_buffer[i]= 0;
}
wifi_state=2; //rx body
ubTxMax = size;
ubTxIndex = 1 ;
ubRxMax = size + 5;
SpiSendByte(wlan_tx_buffer[0]); //sends first byte so next are sent by interrupt
SPI_I2S_ITConfig(WIFI_SPI, SPI_I2S_IT_TXE, ENABLE);
}
}else if (wifi_state==2)//rx body
{
if (ubRxIndex == ubRxMax){ //end reception
WIFI_CS_HIGH();
EXTI_ClearITPendingBit(EXTI_Line8);
fWlanInterruptEnable();
SPI_I2S_ITConfig(WIFI_SPI, SPI_I2S_IT_TXE, DISABLE);
(*_pfRxHandler)(wlan_rx_buffer+5);
}
}else if (ubTxIndex == ubTxMax &&ubRxIndex == ubRxMax && wifi_state == 0){//end of transsmision
WIFI_CS_HIGH();
EXTI_ClearITPendingBit(EXTI_Line8);
fWlanInterruptEnable();
SPI_I2S_ITConfig(WIFI_SPI, SPI_I2S_IT_TXE, DISABLE);
}
}
else
{
/* Disable the Rx buffer not empty interrupt */
SPI_I2S_ReceiveData(WIFI_SPI);
//SPI_I2S_ITConfig(WIFI_SPI, SPI_I2S_IT_RXNE, DISABLE);
}
}
/* SPI in Tramitter mode */
if (SPI_I2S_GetITStatus(WIFI_SPI, SPI_I2S_IT_TXE) == SET)
{
if ((ubTxIndex < ubTxMax && ubTxIndex < SPI_BUFFER_SIZE))//||wifi_state==1|| wifi_state==2)
{
/* Send Transaction data */
SPI_I2S_SendData(WIFI_SPI, wlan_tx_buffer[ubTxIndex++]);
}
else
{
/* Disable the Tx buffer empty interrupt */
SPI_I2S_ITConfig(WIFI_SPI, SPI_I2S_IT_TXE, DISABLE);
}
}
//wlan_rx_buffer[0] = SpiSendByte(0);
}
