Request help getting CH552 serial port working

Bert V. OP (Company: CruzPro Ltd.) #7670389
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Does anyone know how to get the CH552 serial port 1 configured and working? I can get serial port 0 working but can't get serial port1 working for the life of me. I configure the serial port1 this way but get no output:

SCON1=0x70 // 8 bit FAST mode SBAUD1= 100 // 4800 BAUD with internal 24Mhz clock running

The in the main program I have the following code:

while(1) { SBUF1='A'; DlyMs(100); }

TxD1 is on P1.7 (CH552T pin#5)

Regards,

Bert van den Berg New Zealand

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Sigint 112 #7670441
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1
 
#include<8051.h>

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__sfr __at (0xC0) SCON1;

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__sfr __at (0xC2) SBAUD1; 

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__sfr __at (0xC1) SBUF1;

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void cout(char *c)

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{

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 while(*c)

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 {

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  SBUF1=*c;

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  c++;

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  for(int i=0; i<0xfff;i++){}

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 }

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}

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void main(){

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 SCON1=0x70;      // 8 bit FAST mode

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 SBAUD1= (256 - 6000000 / 16 / 9600);

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 while(1)

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 {

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  cout("Hallo Welt!\n");

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 }

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}

1
 
SBAUD1 = 256- FCPU / 16 / BAUD
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