ejung/avrIOhelper
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out and in states now arrays, add examples, refactoring

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This commit is contained in:
Max Brüggemann
2021-08-21 12:39:15 +02:00
parent 169734446f
commit 8a442e9011
3 changed files with 63 additions and 24 deletions
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54
io-helper.c
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@@ -1,29 +1,57 @@
#include <avr/io.h> #include <avr/io.h>
#include "io-helper.h" #include "io-helper.h"
volatile uint32_t outStates = 0; volatile uint8_t outStates[]={0,0,0,0};
volatile uint32_t inStates = 0; volatile uint8_t inStates[] = {0,0,0,0};
/* @brief: copies a single bit from one char to another char (or arrays thereof)
*
*
*/
/*
void ioHelperCpArb(volatile uint8_t *source, uint16_t sourceNr,volatile uint8_t *target, uint16_t targetNr) {
if(*(source+(sourceNr/8))&(1<<(sourceNr-((sourceNr/8)*8))))
{
*(target+(targetNr/8))|=(1<<(targetNr-((targetNr/8)*8)));
} else *(target+(targetNr/8))&=~(1<<(targetNr-((targetNr/8)*8)));
}
*/
void ioHelperSetBit(volatile uint8_t *list, uint8_t nr, uint8_t state) {
unsigned char ArC=0;
ArC=nr/8;
if(state) *(list+ArC)|=(1<<(nr-(ArC*8)));
else *(list+ArC)&=~(1<<(nr-(ArC*8)));
}
unsigned char ioHelperReadBit(volatile uint8_t *list, uint8_t nr) {
unsigned char ArC=0;
ArC=nr/8;
if (*(list+ArC)&(1<<(nr-(ArC*8))))
{
return 1;
} else return 0;
}
void ioHelperCpBit(uint8_t reg, uint8_t bi, uint8_t bo) { void ioHelperCpBit(uint8_t reg, uint8_t bi, uint8_t bo) {
if(reg&(1<<bi)) inStates|=(1<<bo); ioHelperSetBit(inStates,bo,reg&(1<<bi));
else inStates&=~(1<<bo);
} }
uint8_t getBit1(uint8_t bit) { uint8_t getBit1(uint8_t bit) {
if(outStates&(1<<bit)) return 1; if(ioHelperReadBit(outStates,bit)) return 1;
else return 0; else return 0;
} }
uint8_t getBit0(uint8_t bit) { uint8_t getBit0(uint8_t bit) {
if(outStates&(1<<bit)) return 0; if(ioHelperReadBit(outStates,bit)) return 0;
else return 1; else return 1;
} }
void writeBit(volatile uint8_t * port, uint8_t bp, uint8_t bstate) { //void writeBit(volatile uint8_t * port, uint8_t bp, uint8_t bstate) {
if (outStates&(1<<bstate)) *(port) |= (1<<bp); // if (outStates&(1<<bstate)) *(port) |= (1<<bp);
else *(port) &=~(1<<bp); // else *(port) &=~(1<<bp);
} //}
void ioConf(void) { void ioHelperIoConf(void) {
#ifdef DDRA #ifdef DDRA
DDRA|=0 DDRA|=0
#ifdef BitPA0 #ifdef BitPA0
@@ -833,7 +861,7 @@ DDRZ|=0
} }
void setOuts(void) { void ioHelperSetOuts(void) {
#ifdef PORTA #ifdef PORTA
PORTA|=0 PORTA|=0
#ifdef BitPA0 #ifdef BitPA0
@@ -2345,7 +2373,7 @@ void setOuts(void) {
} }
void readPins(void) { void ioHelperReadPins(void) {
#ifdef PINA #ifdef PINA
#ifdef BitPinA0 #ifdef BitPinA0
ioHelperCpBit(PINA,0,BitPinA0); ioHelperCpBit(PINA,0,BitPinA0);

12
io-helper.h
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@@ -1,8 +1,10 @@
extern volatile uint32_t outStates; extern volatile uint8_t outStates[4];
extern volatile uint32_t inStates; extern volatile uint8_t inStates[4];
void setOuts(void); void ioHelperSetOuts(void);
void readPins(void); void ioHelperReadPins(void);
void ioConf(void); void ioHelperIoConf(void);
void ioHelperSetBit(volatile uint8_t *list, uint8_t nr, uint8_t state);
unsigned char ioHelperReadBit(volatile uint8_t *list, uint8_t nr);
//Outputs //Outputs

21
main.c
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@@ -2,12 +2,21 @@
#include "io-helper.h" #include "io-helper.h"
int main(void) { int main(void) {
ioHelperIoConf();
while(1) {
ioHelperSetOuts(); //write data from outStates to ports
ioHelperReadPins(); //read pins, arrange data into inStates
//read a specific bit from inStates
if(ioHelperReadBit(inStates,BitPinC5)) {
//input on PortC, Bit 5 is high
;
}
outStates=0xFFFFFFFF; //write a bit to outstates
ioHelperSetBit(outStates,BitPB1,1); //write 1
while(1) { ioHelperSetOuts();
setOuts(); ioHelperSetBit(outStates,BitPB1,0); //write 0
readPins();
}
}
} }