Exercise 7ASC_1 - DAvE Configurations

1. Exercise 7ASC_1 - DAvE Configurations • Start DAvE • Create new Project with microcontroller C167CR/CS* • Project name: 7ASC_1 • Select project path: c:\hot167_1\7asc_1 • Project Settings: • General: • Select Keil Compiler, SMALL model • System Clock: • External Oscillator Frequency: Set to 5 MHz • Startup Configuration: • Bus Type after Reset: Set to 16 bit DEMUX • Write Configuration: Pin #WR and #BHE operates as #WRL and #WRH • Save & close * C167CS not yet supported by DAvE V1.0 CD ROM. See “Hints regarding DAvE.” HOT167-1 Version 2.0

2. Exercise 7ASC_1 - DAvE Configurations (cont.) • Configure GPT1: • Core Timer 3: • Timer 3 Mode: Timer Mode • Up/Down Control: Count down • Timer Start: Start T3 after initialization • Input Selection: Fcpu/16 (this results in a resolution of 0.8us and a period of 52.4ms) • Timer Register: Load T3 Register with 10ms value((10ms / 0.8us) in HEX) (0x30d3) • Interrupt Control: Enable Timer 3 interrupt • Auxiliary Timer 4: • Timer 4 Mode: Reload Timer 3 with T4 • Timer Register: Load T4 Register with 10ms value((10ms / 0.8us) in HEX) (0x30d3) • Input Selection: Any transition of output toggle latch T3OTL HOT167-1 Version 2.0

3. Exercise 7ASC_1 - DAvE Configurations (cont.) • Configure GPT1 (cont.) • Interrupts: • Choose interrupt level for GPT1 Timer 3 interrupt • Functions: • Include GPT1 initialization function GT1_vInit • Save & close • Configure ASC USART: • Control: • Global: Use pin TxD0 for ASC • Receiver: Enable Receiver (S0REN) • Baudrate: • Required Baudrate: Depends on your debugger configuration; Default after installation is 9600 baud • Functions • Include ASC_vInit, ASC_vSendData • Save & close • Generate Code HOT167-1 Version 2.0

4. Exercise 7ASC_1 - µVision2 Configurations • Start µVision2 • Open Project c:\hot167_1\7asc_1\7asc_1.uv2 (Project | Open Pr.) • Add Files: • Go to Project | Targets, Groups, Files… • Click ‘Groups / Add Files’ • Select ‘Source Group 1’ • Click ‘Add Files to Group’ • Select all C files and click ‘add’ • ???Enter file name ‘start.asm’, click ‘add’ (Assembler Startup File) • Click ‘Close’ and ‘OK’ • Double-click all files in the Project Window to open them • Select Target Hardware (kitCON-167): • Go to Project | Options for Target ‘Target 1’ • Go to ‘Debug’ tab • Click ‘Settings’ (upper right hand corner) • Monitor configuration: select ‘Phytec KC167’ • Click ‘OK’ twice HOT167-1 Version 2.0

5. Exercise 7ASC_1 -µVision2 Configurations (cont.) • Edit MAIN.C: • include endless loop in main(): // USER CODE BEGIN (Main,2) while(1) {}; // USER CODE END • Edit GT1.C: • Define Global Variable ascii_char:// USER CODE BEGIN (GT1_General,2)unsigned char ascii_char;// USER CODE END • In Timer 3 Interrupt Service Routine (GT1_viIsrTmr3(void)): Write ascii_char to ASC and increment ascii_char: // USER CODE BEGIN (GT1_IsrTmr3,1)ASC_vSendData(ascii_char++);// USER CODE END HOT167-1 Version 2.0

6. Exercise 7ASC_1 - Running the Program • Reset Target Hardware (Press Reset Button on Starter Kit) • Build Project (Project | Rebuild Target) • Run integrated Debugger from within µVision2 • Debug | Start / Stop Debug Session (click ‘OK’ when prompted) • The Debugger will load the Keil Monitor into the kitCON-167’s RAM via bootstrap loader • Object file c:\hot167_1\7asc_1\7asc_1 will be loaded automatically and the debugger will go to main(). • Go! (Debug | Go) • Program Verification: • Watch Serial Window in Debugger (View | Serial Window #1)(right mouse button lets you switch between ASCII and Hex output) • Connect Scope to P3.10 / TxD0 (connector X3 pin 110)(select 200 us/Div, trigger on falling edge) • Hint: When stopping the program, override the appearing error message by pressing “continue”. The program will stop. HOT167-1 Version 2.0

7. Exercise 7ASC_1 - Screenshot P3.10 / TxD0 HOT167-1 Version 2.0