ejung/avrIOhelper
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Nr of IOs now settable using defines

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This commit is contained in:
Max Brüggemann
2021-08-23 19:37:37 +02:00
parent 3828826957
commit f473da9c3f
2 changed files with 24 additions and 9 deletions
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23
io-helper.c
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@@ -1,10 +1,10 @@
#include <avr/io.h> #include <avr/io.h>
#include "io-helper.h" #include "io-helper.h"
volatile uint8_t outStates[]={0,0,0,0}; volatile uint8_t outStates[nrOfOutputs/8];
volatile uint8_t inStatesRaw[] = {0,0,0,0}; volatile uint8_t inStatesRaw[nrOfInputs/8];
volatile uint8_t inStates[] = {0,0,0,0}; volatile uint8_t inStates[nrOfInputs/8];
volatile uint8_t oldInstates[] = {0,0,0,0}; volatile uint8_t oldInstates[nrOfInputs/8];
/* @brief: copies a single bit from one char to another char (or arrays thereof) /* @brief: copies a single bit from one char to another char (or arrays thereof)
@@ -18,12 +18,12 @@ void ioHelperCpArb(volatile uint8_t *source, uint16_t sourceNr,volatile uint8_t
} else *(target+(targetNr/8))&=~(1<<(targetNr-((targetNr/8)*8))); } else *(target+(targetNr/8))&=~(1<<(targetNr-((targetNr/8)*8)));
} }
volatile uint8_t ioHelperDebounceTable[32]; volatile uint8_t ioHelperDebounceTable[nrOfInputs];
/* debounceing: */ /* debounceing: */
void ioHelperDebounce(void) { void ioHelperDebounce(void) {
static volatile uint8_t tablePos=0; static volatile uint8_t tablePos=0;
for(uint8_t i = 0; i<16; i++) { for(uint8_t i = 0; i<nrOfInputs; i++) {
ioHelperCpArb(inStatesRaw,i,ioHelperDebounceTable,i*8+tablePos); ioHelperCpArb(inStatesRaw,i,ioHelperDebounceTable,i*8+tablePos);
if(ioHelperDebounceTable[i]==0) ioHelperSetBit(inStates,i,0); if(ioHelperDebounceTable[i]==0) ioHelperSetBit(inStates,i,0);
else if(ioHelperDebounceTable[i]==0xFF) ioHelperSetBit(inStates,i,1); else if(ioHelperDebounceTable[i]==0xFF) ioHelperSetBit(inStates,i,1);
@@ -69,6 +69,17 @@ uint8_t getBit0(uint8_t bit) {
//} //}
void ioHelperIoConf(void) { void ioHelperIoConf(void) {
for(uint8_t x=0; x<nrOfInputs; x++) {
ioHelperDebounceTable[x]=0;
}
for(uint8_t x=0; x<nrOfInputs/8; x++) {
inStates[x]=0;
inStatesRaw[x]=0;
}
for(uint8_t x=0; x<nrOfOutputs/8; x++) {
outStates[x]=0;
}
#ifdef DDRA #ifdef DDRA
DDRA|=0 DDRA|=0
#ifdef BitPA0 #ifdef BitPA0

10
io-helper.h
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@@ -2,9 +2,13 @@
#define _IO_HELPER_ #define _IO_HELPER_
#include <avr/io.h> #include <avr/io.h>
extern volatile uint8_t outStates[4];
extern volatile uint8_t inStates[4]; #define nrOfOutputs 32 //must be multiple of 8
extern volatile uint8_t ioHelperDebounceTable[32]; #define nrOfInputs 32 //must be multiple of 8
extern volatile uint8_t outStates[nrOfOutputs/8];
extern volatile uint8_t inStates[nrOfInputs/8];
extern volatile uint8_t ioHelperDebounceTable[nrOfInputs];
void ioHelperSetOuts(void); void ioHelperSetOuts(void);
void ioHelperReadPins(void); void ioHelperReadPins(void);
void ioHelperIoConf(void); void ioHelperIoConf(void);