/* 延时指定毫秒时间 */
void mDelaymS( UINT8 ms )
{
while ( ms -- ) {
mDelayuS( 250 );
mDelayuS( 250 );
mDelayuS( 250 );
mDelayuS( 250 );
}
}
//*****************************************************************************
//
//! \brief Initial CH376 as USB host.
//!
//! \param None
//!
//! \return error code defined in hw_CH376INC.h.
//
//*****************************************************************************
UINT8 mInitCH376Host( void )
{
UINT8 res;
CH376PortInit( );
xWriteCH376Cmd( CMD11_CHECK_EXIST );
xWriteCH376Data( 0x65 );
res = xReadCH376Data( );
xEndCH376Cmd( );
if ( res != 0x9A ) return( ERR_USB_UNKNOWN );
xWriteCH376Cmd( CMD11_SET_USB_MODE );
xWriteCH376Data( 0x06 );
mDelayuS( 20 );
res = xReadCH376Data( );
xEndCH376Cmd( );
#ifdef CH376_USE_SOFTWARE_SPI
#ifdef CH376_SPI_SDO_INT
xWriteCH376Cmd( CMD20_SET_SDO_INT );
xWriteCH376Data( 0x16 );
xWriteCH376Data( 0x90 );
xEndCH376Cmd( );
#endif
#endif
if ( res == CMD_RET_SUCCESS ) return( USB_INT_SUCCESS );
else return( ERR_USB_UNKNOWN );
}
//*****************************************************************************
//
//! \brief Write command to CH376.
//!
//! \param mCmd command value
//!
//! \details Write command to CH376.
//!
//! \return None.
//
//*****************************************************************************
void xWriteCH376Cmd( UINT8 mCmd )
{
CH376_SPI_CS_SET;
CH376_SPI_CS_CLR;
SPIDataOut(mCmd);
mDelayuS(2);
}
//*****************************************************************************
//
//! \brief Write command to CH376.
//!
//! \param mCmd command value
//!
//! \details Write command to CH376.
//!
//! \return None.
//
//*****************************************************************************
void xWriteCH376Cmd( UINT8 mCmd )
{
//
// to avoid not asserting CS PIN
//
CH376_SPI_CS_SET;
CH376_SPI_CS_CLR;
xSPISingleDataReadWrite( CH376_SPI_PORT, mCmd);
//
// make sure that read or write cycle must longer than 1.5us
//
mDelayuS(2);
}
UINT8 mInitCH376Host( void ) /* 初始化CH376 */
{
UINT8 res;
CH376_PORT_INIT( ); /* 接口硬件初始化 */
xWriteCH376Cmd( CMD11_CHECK_EXIST ); /* 测试单片机与CH376之间的通讯接口 */
xWriteCH376Data( 0x65 );
res = xReadCH376Data( );
// xEndCH376Cmd( ); // 并口方式不需要
if ( res != 0x9A ) return( ERR_USB_UNKNOWN ); /* 通讯接口不正常,可能原因有:接口连接异常,其它设备影响(片选不唯一),串口波特率,一直在复位,晶振不工作 */
xWriteCH376Cmd( CMD11_SET_USB_MODE ); /* 设备USB工作模式 */
xWriteCH376Data( 0x06 );
mDelayuS( 20 );
res = xReadCH376Data( );
// xEndCH376Cmd( ); // 并口方式不需要
if ( res == CMD_RET_SUCCESS ) return( USB_INT_SUCCESS );
else return( ERR_USB_UNKNOWN ); /* 设置模式错误 */
}
