/*===========================================================================
SI446X_W_TX_FIFO();
Function : write data to TX fifo
INTPUT : txbuffer, a buffer stores TX array
size, how many bytes should be written
============================================================================*/
void SI446X_W_TX_FIFO(INT8U *txbuffer, INT8U size)
{
SI_CSN_LOW();
SPI_ExchangeByte(WRITE_TX_FIFO);
while (size--) { SPI_ExchangeByte(*txbuffer++); }
SI_CSN_HIGH();
}
/*
================================================================================
Function : CC1101ReadStatus( )
Read a status register
INPUT : addr, The address of the register
OUTPUT : the value read from the status register
================================================================================
*/
u8 CC1101ReadStatus(u8 addr) {
u8 i;
CC_CSN_LOW();
SPI_ExchangeByte(addr | READ_BURST);
i = SPI_ExchangeByte(0xFF);
CC_CSN_HIGH();
return i;
}
/*
================================================================================
Function : GS_CC1101ReadReg( )
read a byte from the specified register
INPUT : addr, The address of the register
OUTPUT : the byte read from the rigister
================================================================================
*/
u8 GS_CC1101ReadReg(u8 addr) {
u8 i;
CC_CSN_LOW();
SPI_ExchangeByte(addr | READ_SINGLE);
i = SPI_ExchangeByte(0xFF);
CC_CSN_HIGH();
return i;
}
/*
================================================================================
Function : CC1101WriteMultiReg( )
Write some bytes to the specified register
INPUT : addr, The address of the register
buff, a buffer stores the values
size, How many byte should be written
OUTPUT : None
================================================================================
*/
void CC1101WriteMultiReg(u8 addr, u8 *buff, u8 size) {
u8 i;
CC_CSN_LOW();
SPI_ExchangeByte(addr | WRITE_BURST);
for (i = 0; i < size; i++) {
SPI_ExchangeByte(*(buff + i));
}
CC_CSN_HIGH();
}
/*===========================================================================
SI446X_READ_RESPONSE();
Function : read a array of command response
INTPUT : buffer, a buffer, stores the data responsed
size, How many bytes should be read
============================================================================*/
void SI446X_READ_RESPONSE(INT8U *buffer, INT8U size)
{
SI446X_WAIT_CTS();
SI_CSN_LOW();
SPI_ExchangeByte(READ_CMD_BUFF);
while (size--) { *buffer++ = SPI_ExchangeByte(0xFF); }
SI_CSN_HIGH();
}
/*
================================================================================
Function : GS_CC1101ReadMultiReg( )
Read some bytes from the rigisters continously
INPUT : addr, The address of the register
buff, The buffer stores the data
size, How many bytes should be read
OUTPUT : None
================================================================================
*/
void GS_CC1101ReadMultiReg(u8 addr, u8 *buff, u8 size) {
u8 i, j;
CC_CSN_LOW();
SPI_ExchangeByte(addr | READ_BURST);
for (i = 0; i < size; i++) {
for (j = 0; j < 20; j++)
;
*(buff + i) = SPI_ExchangeByte(0xFF);
}
CC_CSN_HIGH();
}
/*===========================================================================
SI446X_WAIT_CTS();
Function : wait the device ready to response a command
============================================================================*/
void SI446X_WAIT_CTS(void)
{
INT8U cts;
IWDG_ReloadCounter();
do
{
SI_CSN_LOW();
SPI_ExchangeByte(READ_CMD_BUFF);
cts = SPI_ExchangeByte(0xFF);
SI_CSN_HIGH();
}while(cts != 0xFF);
IWDG_ReloadCounter();
}
/*===========================================================================
SI446X_NOP();
Function : NO Operation command
============================================================================*/
INT8U SI446X_NOP(void)
{
INT8U cts;
SI_CSN_LOW();
cts = SPI_ExchangeByte(NOP);
SI_CSN_HIGH();
return cts;
}
/*
=================================================================================
LCD_WrDat( );
Function : Write a byte to OLED module
INTPUT : dt, the data byte
OUTPUT : None
=================================================================================
*/
void LCD_WrDat(INT8U dt)
{
unsigned char i;
OLED_CSN_L( );
OLED_CMD_H( );//LCD_DC=1;
SPI_ExchangeByte( dt );
OLED_CSN_H( );
}
/*
=================================================================================
LCD_WrCmd( );
Function : Write a command to OLED module
INTPUT : cmd, the command byte
OUTPUT : None
=================================================================================
*/
void LCD_WrCmd(INT8U cmd)
{
unsigned char i;
OLED_CSN_L( );
OLED_CMD_L( );//LCD_DC=0;
SPI_ExchangeByte( cmd );
OLED_CSN_H( );
}
/*===========================================================================
SI446X_CMD();
Function : Send a command to the device
INTPUT : cmd, the buffer stores the command array
cmdsize, the size of the command array
============================================================================*/
void SI446X_CMD(INT8U *cmd, INT8U cmdsize)
{
SI446X_WAIT_CTS();
SI_CSN_LOW();
while (cmdsize--) { SPI_ExchangeByte(*cmd++); }
SI_CSN_HIGH();
}
/*===========================================================================
SI446X_READ_PACKET();
Function : read RX fifo
INTPUT : buffer, a buffer to store data read
OUTPUT : received bytes
============================================================================*/
INT8U SI446X_READ_PACKET(INT8U *buffer)
{
INT8U length, i;
SI446X_WAIT_CTS();
SI_CSN_LOW();
SPI_ExchangeByte(READ_RX_FIFO);
#if PACKET_LENGTH == 0
length = SPI_ExchangeByte(0xFF);
#else
length = PACKET_LENGTH;
#endif
i = length;
while (length--) { *buffer++ = SPI_ExchangeByte(0xFF); }
SI_CSN_HIGH();
return i;
}
/*===========================================================================
SI446X_SEND_PACKET();
Function : send a packet
INTPUT : txbuffer, a buffer stores TX array
size, how many bytes should be written
channel, tx channel
condition, tx condition
============================================================================*/
void SI446X_SEND_PACKET(INT8U *txbuffer, INT8U size, INT8U channel, INT8U condition)
{
INT8U tx_len = size;
SI446X_TX_FIFO_RESET();
SI446X_RX_FIFO_RESET();
SI446X_CHANGE_STATE(2);
while(SI446X_GET_DEVICE_STATE() != 2);
SI446X_WAIT_CTS();
SI_CSN_LOW();
SPI_ExchangeByte(WRITE_TX_FIFO);
#if PACKET_LENGTH == 0
tx_len ++;
SPI_ExchangeByte(size);
#endif
while(size --) { SPI_ExchangeByte(*txbuffer++); }
SI_CSN_HIGH();
SI446X_START_TX(channel, condition, tx_len);
}
/*
================================================================================
Function : CC1101WriteCmd( )
Write a command byte to the device
INPUT : command, the byte you want to write
OUTPUT : None
================================================================================
*/
void CC1101WriteCmd(u8 command) {
CC_CSN_LOW();
SPI_ExchangeByte(command);
CC_CSN_HIGH();
}
/*
================================================================================
Function : CC1101WriteReg( )
Write a byte to the specified register
INPUT : addr, The address of the register
value, the byte you want to write
OUTPUT : None
================================================================================
*/
void CC1101WriteReg(u8 addr, u8 value) {
CC_CSN_LOW();
SPI_ExchangeByte(addr);
SPI_ExchangeByte(value);
CC_CSN_HIGH();
}
