mainscnt/mains-frequency-counter-rpi
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This commit is contained in:
Wolfgang Hottgenroth 2019-10-04 08:32:10 +01:00
parent f2bdc50011
commit 7352065ace
3 changed files with 5 additions and 5 deletions
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1
.gitignore vendored
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@ -2,5 +2,4 @@
*.pyc *.pyc
*~ *~
.*~ .*~
snippets/test1/test1

BIN
snippets/test1/test1
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9
snippets/test1/test1.c
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@ -1,4 +1,5 @@
#include <wiringPi.h> #include <wiringPi.h>
#include <wiringPiSPI.h>
#include <stdint.h> #include <stdint.h>
#include <stdio.h> #include <stdio.h>
#include <unistd.h> #include <unistd.h>
@ -59,10 +60,10 @@ const uint8_t MDR1_F_BW = 0b01000000;
const uint8_t MDR1_F_CY = 0b10000000; const uint8_t MDR1_F_CY = 0b10000000;
volatile uint32_t ec = 0;
void isr() { void isr() {
static int t = 0; ec++;
digitalWrite(16, t);
t = ! t;
} }
void writeCmd(uint8_t c) { void writeCmd(uint8_t c) {
@ -118,7 +119,7 @@ int main (void) {
uint8_t str = read8(CMD_RD | REG_STR); uint8_t str = read8(CMD_RD | REG_STR);
uint32_t cntr = read32(CMD_RD | REG_CNTR); uint32_t cntr = read32(CMD_RD | REG_CNTR);
printf("%02x %ud\n", str, cntr); printf("%02x %d %d\n", str, ec, cntr);
sleep(1); sleep(1);
} }