Posted on November 08, 2007 at 13:14Ok i had everything working except the slave select which i have now learnt doesnt work when the st710 as master , so i swapped the slave wire to port 0 pin 12 and then fed the SS pin (port 0 pin 3) with the +3V found on the board with a 10k resistor. But now nothing works and was wondering if anyone could help me. please see my code below which was working before i swapped the slave wire.
Code:
void InitaliseQTouch(void)
{
// P0.0 ''MISO''
// P0.1 ''MOSI''
// P0.2 ''SCLK''
// P0.3 ''Old SS''
// P2.9 ''DRDY''
// P2.10 ''CHANGE''
// P0.12 ''SS''
GPIO_Config (GPIO0,(1<<1)|(1<<2)|(1<<12), GPIO_AF_PP); // set up port pins.
GPIO_Config(GPIO0,(1<<3),GPIO_IN_TRI_CMOS);//Old SS
GPIO_Config(GPIO0,0,GPIO_IN_TRI_CMOS);//MISO
BSPI_BSPI0Conf ( ENABLE );
BSPI_Init ( BSPI0 );
BSPI_ClockDividerConfig( BSPI0 ,230 );// this gives a 20 micro wave.10 up 10 down
BSPI_Enable ( BSPI0 , ENABLE);
BSPI_MasterEnable ( BSPI0 , ENABLE);
BSPI_ClkActiveHigh ( BSPI0 ,ENABLE);//this should make it idle high
BSPI_ClkFEdge ( BSPI0 ,DISABLE); //dont get data on first clock edge
BSPI_8bLEn ( BSPI0 , ENABLE); //allow 8 bit words
// BSPI_FifoDisable ( BSPI0 );
BSPI_RcFifoDepth ( BSPI0 , 3 ); // 3 Words Recived
BSPI_TrFifoDepth ( BSPI0 , 3 ); // 3 Words Transmit
}
void UseQ(void) {
if(GPIO_BitRead(GPIO2, 0x0A)==1)//if change
{
if(GPIO_BitRead(GPIO2, 0x09)==1)//if data ready
{
GPIO_BitWrite(GPIO0,12,0x00);
BSPI_BufferSend (BSPI0,Buff1Out,3 );// this should send the words
BSPI_BufferReceive(BSPI0,Buff1In ,3 );// put the data recived into my buffer
GPIO_BitWrite(GPIO0,12,0x01);
}
}
}
