Items:
1 PC (Windows 7)
2 Internet access
3 ST-Link V2 US$ 2.57
This is quite small, measuring only 30 mm by 18 mm.
6 Breadboard, connectors, LEDs, resistors etc
7 74HC164
8 LCD 1602 (Module Display For Arduino)
Setup:
Read STM8S Reference Manual
Read STM8S103 Datasheet
Install IDE
Connect the STM8S103 to the ST-LinkV2 (3V3 or 5V)
Plug the ST-LinkV2 to the PC
Programming:
Launch the IDE
Create a new empty project with STM8S103F3P as the device,
and ST-Link as the Debugger.
Type in a program, name it main.c and add it to the project
Make and 'Download and Debug'
(Click) Go and check that the STM8S103 behaves as in the program.
Approach:
IDE usage and downloading
Simple output
Interrupt
SPI output
LCD 1602
Notes on the Examples:
T10 Test IDE and downloading
T13p Turn on LED (connected to PB5)
T15p Blink LED
T17c Change to full 16-MHz speed
T22t Test Timer 4 (Dim LED)
T23t Control LED with Timer4
T26i Timer 4 Interrupt
Examples:
==========
// T10.c
int main(){
return 0;
}
==========
// T13p.c
#include <iostm8s103f3.h>
int main(){
PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
PB_CR1 |= 1<<5 ; // bit 5 Push-Pull
PB_CR2 &= ~(1<<5) ; // bit 5 Slow (2MHz)
PB_DDR |= 1<<5 ; // bit 5 output
while(1);
}
==========
// T15p.c
#include <iostm8s103f3.h>
int main(){
int i ;
PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
PB_CR1 |= 1<<5 ; // bit 5 Push-Pull
PB_CR2 &= ~(1<<5) ; // bit 5 Slow (2MHz)
PB_DDR |= 1<<5 ; // bit 5 output
while(1){
PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
for(i=0;i<=30000;i++){ ; } // Software delay
PB_ODR |= (1<<5) ; // bit 5 set LED off
for(i=0;i<=30000;i++){ ; } // Software delay
}
//while(1);
}
==========
// T17c.c
#include <iostm8s103f3.h>
int main(){
int i,j ;
CLK_CKDIVR &= ~MASK_CLK_CKDIVR_HSIDIV ; // Mask /0 16-MHz
PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
PB_CR1 |= 1<<5 ; // bit 5 Push-Pull
PB_CR2 &= ~(1<<5) ; // bit 5 Slow (2MHz)
PB_DDR |= 1<<5 ; // bit 5 output
while(1){
PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
for(i=0;i<=1000;i++){for(j=0;j<=1000;j++);}
PB_ODR |= (1<<5) ; // bit 5 set LED off
for(i=0;i<=1000;i++){for(j=0;j<=1000;j++);}
}
//while(1);
}
==========
// T22t.c
#include <iostm8s103f3.h>
int main(){
CLK_CKDIVR &= ~MASK_CLK_CKDIVR_HSIDIV ; // Mask /0 16-MHz
PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
PB_CR1 |= 1<<5 ; // bit 5 Push-Pull
PB_CR2 &= ~(1<<5) ; // bit 5 Slow (2MHz)
PB_DDR |= 1<<5 ; // bit 5 output
TIM4_ARR = 0xFF ;
TIM4_PSCR |= MASK_TIM4_PSCR_PSC ; // 7 /128
TIM4_CR1 |= MASK_TIM4_CR1_CEN ;
while(1){ // 0xF8 --> dim
if( TIM4_CNTR>=0xF8 ) PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
else PB_ODR |= (1<<5) ; // bit 5 set LED off
}
//while(1);
}
==========
// T23t.c
#include <iostm8s103f3.h>
int main(){
int i ;
CLK_CKDIVR &= ~MASK_CLK_CKDIVR_HSIDIV ; // Mask /0 16-MHz
PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
PB_CR1 |= 1<<5 ; // bit 5 Push-Pull
PB_CR2 &= ~(1<<5) ; // bit 5 Slow (2MHz)
PB_DDR |= 1<<5 ; // bit 5 output
TIM4_ARR = 0xFF ;
TIM4_PSCR |= MASK_TIM4_PSCR_PSC ; // (7) /128
TIM4_CR1 |= MASK_TIM4_CR1_CEN ;
i = 0 ;
while(1){
while( (TIM4_SR&MASK_TIM4_SR_UIF)==0 ) ; // Wait till overflow
TIM4_SR &= ~MASK_TIM4_SR_UIF ; // Clear flag
i++ ;
if( i<=500 ) PB_ODR = 0x00 ;
else PB_ODR = 0x20 ;
if( i==700 ) i = 0 ;
}
//while(1);
}
==========
// T26i.c
#include <iostm8s103f3.h>
#include <intrinsics.h>
int i ;
int main(){
CLK_CKDIVR &= ~MASK_CLK_CKDIVR_HSIDIV ; // Mask /0 16-MHz
PB_ODR &= ~(1<<5) ; // bit 5 clear LED on
PB_CR1 |= 1<<5 ; // bit 5 Push-Pull
PB_CR2 &= ~(1<<5) ; // bit 5 Slow (2MHz)
PB_DDR |= 1<<5 ; // bit 5 output
TIM4_ARR = 0xFF ;
TIM4_PSCR |= MASK_TIM4_PSCR_PSC ; // (7) /128
TIM4_CR1 |= MASK_TIM4_CR1_CEN ;
TIM4_SR &= ~MASK_TIM4_SR_UIF ; // Clear flag
TIM4_IER |= MASK_TIM4_IER_UIE ;
__enable_interrupt();
i = 0 ;
while(1){;} // Wait for interrupt
//while(1);
}
#pragma vector = TIM4_OVR_UIF_vector
__interrupt void Timer4ISR(void){
TIM4_SR &= ~MASK_TIM4_SR_UIF ; // Clears Timer 4 Interrupt Flag
i++ ;
if( i<=500 ) PB_ODR = 0x00 ;
else PB_ODR = 0x20 ;
if( i==1000 ) i = 0 ;
}
==========
