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Hello all, I have a problem using ISD51 to debug my board with C515C processor. In order to test the serial port and basic ISD51 functionality, I used a small piece of code below (Test.c). First under the Keil PK51 software simulator, it works fine. I could use the Hyperterminal to receive or to send any character to my board. Then I switched from simulator to Keil In-System ISD51 Debug and it failed. I don't know why as I tried everything in Keil's online documentation. One thing I need to point out is that I didn't burn the code into flash and instead used a flash simulator Flex III. Can someone giveme a hand with this issue? Thanks in advance, Frank /*------------------------------------------------------------------------------ TEST.C: ISD51 Demo for Infineon C868 Copyright 2003 Keil Software, Inc. ------------------------------------------------------------------------------*/ #include <intrins.h> #include <stdio.h> #include "ISD51.h" #include "reg515a.h" /* parameters to initialize serial communication */ #define B_38400 0x05 /* 38400 baud */ #define B_19200 0x04 /* 19200 baud */ #define B_9600 0x03 /* 9600 baud */ #define B_4800 0x02 /* 4800 baud */ #define B_2400 0x01 /* 2400 baud */ #define B_1200 0x00 /* 1200 baud */ void Delay(unsigned int i) { unsigned int j; while(i--) { // delay WDT = 1; // reset SWDT = 1; j = 0x200; while (j--); } } void Project_Init(serBaud) { switch ( serBaud ) { /* oscillator frequency = 10 Mhz */ case B_38400: SRELH = 0x03; /* Reloadwert für 38400 Baud */ SRELL = 0xF0; PCON |= 0x80; /* SMOD = 1 */ break; case B_19200: SRELH = 0x03; /* Reloadwert für 19200 Baud */ SRELL = 0xDF; PCON |= 0x80; /* SMOD = 1 */ break; case B_9600: SRELH = 0x03; /* Reloadwert für 9600 Baud */ SRELL = 0xBF; PCON |= 0x80; /* SMOD = 1 */ break; case B_4800: SRELH = 0x03; /* Reloadwert für 4800 Baud */ SRELL = 0x7E; PCON |= 0x80; /* SMOD = 1 */ break; case B_2400: SRELH = 0x02; /* Reloadwert für 2400 Baud */ SRELL = 0xFC; PCON |= 0x80; /* SMOD = 1 */ break; case B_1200: SRELH = 0x01; /* Reloadwert für 1200 Baud */ SRELL = 0xF7; PCON |= 0x80; /* SMOD = 1 */ break; default: return; break; } ADCON0 |= 0x80; /* enable baud rate generator */ SCON = 0x50; /* mode 1: 8-bit UART, enable receiver */ // ES = 1; /* enable serial interrupt IE.ES */ } #if 1 // uncomment this function to verify serial communication /* * Test Function: verify serial communication with HyperTerminal */ void TestSerial (void) { char c = 'A'; TI = 1; while (1) { Delay(200); if (RI) { c = SBUF; RI = 0; } while (!TI); TI = 0; SBUF = c; } } #endif void main (void) { unsigned int i; Project_Init(B_9600); // Initialize Chip and Serial Interface #ifndef ISD51 // init ISD51 only when the uVision2 Debugger tries to connect TestSerial(); #endif #if 0 // init ISD51 and start user program until the uVision2 Debugger connects ISDinit (); // initialize uVision2 Debugger and continue program run #endif #if 0 // init ISD51 and wait until the uVision2 Debugger connects ISDwait (); // wait for connection to uVision2 Debugger #endif while (1) { #ifdef ISD51 // init ISD51 only when the uVision2 Debugger tries to connect ISDcheck(); // initialize uVision2 Debugger and continue program run #endif i++; } }
I think I did everything using all Keil website info. Below is my updated ISD51.h matching C515C processor. Can you help find out anything wrong in this file? Thanks. Frank //--------------------------------------------------- #define RAMSIZE 0xF8 // default is 0x100 => 256 bytes IDATA RAM #define CMP_START 0x0 // default is 0 #define CMP_END 0x7FFF // default is 64KB (0xFFFF) //------------------------------------------------------------------------------ #ifndef __C51__ /* 8051 SFR Register addresses for on-chip 8051 UART */ sfr SCON = 0x98; sfr SBUF = 0x99; sfr IEN0 = 0xA8; /* SCON Bits */ sbit TI = SCON^1; sbit RI = SCON^0; /* IEN0 Bits */ sbit ES = IEN0^4; CLR_TI MACRO ; Clear Transmit Interrupt Flag CLR TI ; No CPU register may be changed here ENDM SET_TI MACRO ; Set Transmit Interrupt Flag SETB TI ; No CPU register may be changed here ENDM JNB_TI MACRO label ; Jump if Transmit Interrupt Flag not set JNB TI,label ; PSW may be modified without saving it ENDM WR_SBUF MACRO ; Write ACC to SBUF MOV SBUF,A ; ACC and PSW may be modified without saving it ENDM CLR_RI MACRO ; Clear Receiver Interrupt Flag CLR RI ; No CPU register may be changed here ENDM JB_RI MACRO label ; Jump if Receiver Interrupt Flag set JB RI,label ; ACC and PSW may be modified without saving it ENDM JNB_RI MACRO label ; Jump if Receiver Interrupt Flag not set JNB RI,label ; ACC and PSW may be modified without saving it ENDM RD_SBUF MACRO ; Return SBUF in ACC MOV A,SBUF ; ACC and PSW may be modified without saving it ENDM CLR_ES MACRO ; Disable Serial Interrupt CLR ES ; No CPU register may be changed here ENDM SET_ES MACRO ; Enable Serial Interrupt SETB ES ; No CPU register may be changed here ENDM JNB_ES MACRO label ; Jump if Receiver Interrupt Flag not set JNB ES,label ; ACC and PSW may be modified without saving it ENDM SAVE_ES MACRO ; Save Serial Interrupt enable bit to Carry MOV C,ES ; ACC and PSW may be modified without saving it ENDM RESTO_ES MACRO ; Restore Serial Interrupt enable bit from Carry MOV ES,C ; ACC and PSW may be modified without saving it ENDM SINTRVEC EQU 0x23 ; Interrupt Vector Address of UART interrupt #endif //------------------------------------------------------------------------------ // // ISD51 CODE MEMORY ACCESS FUNCTIONS FOR HARDWARE BREAKPOINTS // =========================================================== //
Step "5. Add serial port and baud rate initialization code for the on-chip UART to your C main function." You did not post your C main function. Take a look to "Keil\c51\ISD51\Examples\Generic 8052". TEST.C contains a sample main.
In future posts, you should refer to the file and you place source code source code between <pre></font> and </pre>. For example from TEST.C: void main (void) { unsigned int i; T2CON = 0x34; /* Use Timer 2 as baudrate generator */ #if 0 RCAP2H = 0xFF; RCAP2L = 0xBF; /* 19230 baud @ 20MHz */ #endif RCAP2H = 0xFF; RCAP2L = 0xD9; /* 19230 baud @ 12MHz */ /* 38460 baud @ 24MHz */ SCON = 0x50; /* enable serial uart & receiver */ EA = 1; /* Enable global interrupt flag */
Sorry, I missed also the source code tabs. This is the correct print-out: For example from TEST.C:
void main (void) { unsigned int i; T2CON = 0x34; /* Use Timer 2 as baudrate generator */ #if 0 RCAP2H = 0xFF; RCAP2L = 0xBF; /* 19230 baud @ 20MHz */ #endif RCAP2H = 0xFF; RCAP2L = 0xD9; /* 19230 baud @ 12MHz */ /* 38460 baud @ 24MHz */ SCON = 0x50; /* enable serial uart & receiver */ EA = 1; /* Enable global interrupt flag */
My main() is in below. Please review it and advise me if something is wrong. Thanks. =============================================
void main (void) { unsigned int i; Project_Init(B_9600); // Initialize Chip and Serial Interface #ifndef ISD51 // init ISD51 only when the uVision2 Debugger tries to connect TestSerial(); #endif #ifdef ISD51 // init ISD51 and start user program until the uVision2 Debugger connects ISDinit (); // initialize uVision2 Debugger and continue program run #endif #if 0 // init ISD51 and wait until the uVision2 Debugger connects ISDwait (); // wait for connection to uVision2 Debugger #endif EAL = 1; /* Enable global interrupt flag */ while (1) { #ifdef ISD51 // init ISD51 only when the uVision2 Debugger tries to connect ISDcheck(); // initialize uVision2 Debugger and continue program run Delay(200); #endif i++; } }
Looks fine. Did you already test serial communiation using Hyperterm. See: http://www.keil.com/support/man/docs/isd51/isd51_trouble.htm
Yes, I did using HyperTerminal and Keil simulator. Both work fine.
Another question is: do we have to burn the code into a flash for ISD51 debugging? Right now I's using Flex III memory simulator to load the code.
No the code does not have to be programmed into Flash. As long as your code is executed by the controller it is fine for the ISD51.
What error is given by ISD51?
It gave me the following error message: ============================================ ISD51 Error Communication problem with ISD51 - Please check if the loaded application matches the ROM content! - Please check if the baudrates of the PC and the target system match exactly! ============================================ As I used the FlexIII to load the code before start ISD51 debugging, I'm sure the ROM contents on the board matches the application in my PC. Also I tested the baudrate using simulator and Hyperterminal.