关于SI4438的射频收发程序,包括四线SPI读写源程序 -

#include "SI4463_src.h"
/*********************************************************************
** Constant Declaration
*********************************************************************/
const u8 config_table[] = RADIO_CONFIGURATION_DATA_ARRAY;
const u8 config_10k[] = RADIO_CONFIGURATION_DATA_10K;
/*********************************************************************
** Nrf24l01_InterFace
*********************************************************************/
void SI4463_InterFace(void)
{
//init io pin
GPIO_Init(SI_SDN_GPIO,SI_SDN_PIN,GPIO_MODE_OUT_PP_HIGH_FAST);//SDN 引脚设置为输出
Init_SPI();
}
/*
=================================================================================
SI446X_CMD( );
Function : Send a command to the device
INTPUT : cmd, the buffer stores the command array
cmdsize, the size of the command array
OUTPUT : NONE
=================================================================================
*/
void SI446X_CMD( u8 *cmd, u8 cmdsize )
{
SI446X_WAIT_CTS( );
SS_LOW( );
while( cmdsize -- )
{
SPI_ExchangeByte( *cmd++ );
}
SS_HIGH( );
}
/*
=================================================================================
SI446X_POWER_UP( );
Function : Power up the device
INTPUT : f_xtal, the frequency of the external high-speed crystal
OUTPUT : NONE
=================================================================================
*/
void SI446X_POWER_UP( u32 f_xtal )
{
u8 cmd[7];
cmd[0] = POWER_UP;
cmd[1] = 0x01;
cmd[2] = 0x00;
cmd[3] = f_xtal>>24;
cmd[4] = f_xtal>>16;
cmd[5] = f_xtal>>8;
cmd[6] = f_xtal;
SI446X_CMD( cmd, 7 );
}
/*
=================================================================================
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
OUTPUT : NONE
=================================================================================
*/
void SI446X_READ_RESPONSE( u8 *buffer, u8 size )
{
SI446X_WAIT_CTS( );
SS_LOW( );
SPI_ExchangeByte( READ_CMD_BUFF );
while( size -- )
{
*buffer++ = SPI_ExchangeByte( 0xFF );
}
SS_HIGH( );
}
/*
=================================================================================
SI446X_WAIT_CTS( );
Function : wait the device ready to response a command
INTPUT : NONE
OUTPUT : NONE
=================================================================================
*/
void SI446X_WAIT_CTS( void )
{
u8 cts;
for(u16 i=0xffff;i>0;i--) //5000次查询等待
{
SS_LOW( );
SPI_ExchangeByte( READ_CMD_BUFF );
cts = SPI_ExchangeByte( 0xFF );
SS_HIGH( );
if(cts == 0xFF)
break;
}
}
/*
=================================================================================
SI446X_NOP( );
Function : NO Operation command
INTPUT : NONE
OUTPUT : NONE
=================================================================================
*/
u8 SI446X_NOP( void )
{
u8 cts;
SS_LOW( );
cts = SPI_ExchangeByte( NOP );
SS_HIGH( );
return cts;
}
/*
=================================================================================
SI446X_PART_INFO( );
Function : Read the PART_INFO of the device, 8 bytes needed
INTPUT : buffer, the buffer stores the part information
OUTPUT : NONE
=================================================================================
*/
void SI446X_PART_INFO( u8 *buffer )
{
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