maxim/gpio-reader
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Merge branch 'develop' into pwm

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This commit is contained in:
Manfred Wallner
2024-05-03 21:27:49 +02:00
committed by GitHub
parent 34b0f368a7 0297d12d10
commit 7e89062466
6 changed files with 125 additions and 78 deletions
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60
gpio/gpio.c
View File

@@ -290,13 +290,33 @@ static void doLoad (int argc, char *argv [])
if (!moduleLoaded (module1))
{
sprintf (cmd, "%s %s%s", findExecutable (MODPROBE), module1, args1) ;
system (cmd) ;
int ret = system(cmd);
if (ret == -1) {
perror("Error executing command");
} else if (WIFEXITED(ret)) {
int exit_status = WEXITSTATUS(ret);
if (exit_status != 0) {
fprintf(stderr, "Command failed with exit status %d\n", exit_status);
}
} else {
fprintf(stderr, "Command terminated by signal\n");
}
}
if (!moduleLoaded (module2))
{
sprintf (cmd, "%s %s%s", findExecutable (MODPROBE), module2, args2) ;
system (cmd) ;
int ret = system(cmd);
if (ret == -1) {
perror("Error executing command");
} else if (WIFEXITED(ret)) {
int exit_status = WEXITSTATUS(ret);
if (exit_status != 0) {
fprintf(stderr, "Command failed with exit status %d\n", exit_status);
}
} else {
fprintf(stderr, "Command terminated by signal\n");
}
}
if (!moduleLoaded (module2))
@@ -350,13 +370,33 @@ static void doUnLoad (int argc, char *argv [])
if (moduleLoaded (module1))
{
sprintf (cmd, "%s %s", findExecutable (RMMOD), module1) ;
system (cmd) ;
int ret = system(cmd);
if (ret == -1) {
perror("Error executing command");
} else if (WIFEXITED(ret)) {
int exit_status = WEXITSTATUS(ret);
if (exit_status != 0) {
fprintf(stderr, "Command failed with exit status %d\n", exit_status);
}
} else {
fprintf(stderr, "Command terminated by signal\n");
}
}
if (moduleLoaded (module2))
{
sprintf (cmd, "%s %s", findExecutable (RMMOD), module2) ;
system (cmd) ;
int ret = system(cmd);
if (ret == -1) {
perror("Error executing command");
} else if (WIFEXITED(ret)) {
int exit_status = WEXITSTATUS(ret);
if (exit_status != 0) {
fprintf(stderr, "Command failed with exit status %d\n", exit_status);
}
} else {
fprintf(stderr, "Command terminated by signal\n");
}
}
}
@@ -562,15 +602,14 @@ static volatile int globalCounter ;
void printgpioflush(const char* text) {
if (gpioDebug) {
printf(text);
printf("%s", text);
fflush(stdout);
}
}
void printgpio(const char* text) {
if (gpioDebug) {
printf(text);
fflush(stdout);
printf("%s", text);
}
}
@@ -620,7 +659,7 @@ void doWfi (int argc, char *argv [])
exit (1) ;
}
printgpio("wait for interrupt function call \n");
printgpio("wait for interrupt function call\n");
for (int Sec=0; Sec<timeoutSec; ++Sec) {
printgpioflush(".");
delay (999);
@@ -1371,7 +1410,10 @@ static void doVersion (char *argv [])
{
if ((fd = fopen ("/proc/device-tree/model", "r")) != NULL)
{
fgets (name, 80, fd) ;
if (fgets(name, sizeof(name), fd) == NULL) {
// Handle error or end of file condition
perror("Error reading /proc/device-tree/model");
}
fclose (fd) ;
printf (" Model: %s\n", name) ;
}

21
wiringPi/mcp3422.c
View File

@@ -43,15 +43,20 @@
*********************************************************************************
*/
void waitForConversion (int fd, unsigned char *buffer, int n)
void waitForConversion(int fd, unsigned char *buffer, int n)
{
for (;;)
{
read (fd, buffer, n) ;
if ((buffer [n-1] & 0x80) == 0)
break ;
delay (1) ;
}
for (;;) {
ssize_t bytes_read = read(fd, buffer, n);
if (bytes_read != n) {
perror("Error reading from file descriptor");
return;
}
if ((buffer[n - 1] & 0x80) == 0)
break;
delay(1);
}
}
/*

6
wiringPi/pcf8591.c
View File

@@ -24,6 +24,7 @@
*/
#include <unistd.h>
#include <stdio.h>
#include "wiringPi.h"
#include "wiringPiI2C.h"
@@ -41,7 +42,10 @@ static void myAnalogWrite (struct wiringPiNodeStruct *node, UNU int pin, int val
unsigned char b [2] ;
b [0] = 0x40 ;
b [1] = value & 0xFF ;
write (node->fd, b, 2) ;
ssize_t bytes_written = write(node->fd, b, 2);
if (bytes_written != 2) {
perror("Error writing to file descriptor");
}
}

62
wiringPi/pseudoPins.c
View File

@@ -35,9 +35,12 @@
#define SHARED_NAME "wiringPiPseudoPins"
#define PSEUDO_PINS 64
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <stdint.h>
#include <sys/stat.h>
#include <fcntl.h>
@@ -45,21 +48,20 @@
#include "pseudoPins.h"
static int myAnalogRead (struct wiringPiNodeStruct *node, int pin)
static int myAnalogRead(struct wiringPiNodeStruct *node, int pin)
{
int *ptr = (int *)node->data0 ;
int myPin = pin - node->pinBase ;
int *ptr = (int *)(intptr_t)node->data0; // Cast to intptr_t to handle pointer-to-integer conversion
int myPin = pin - node->pinBase;
return *(ptr + myPin) ;
return *(ptr + myPin);
}
static void myAnalogWrite (struct wiringPiNodeStruct *node, int pin, int value)
static void myAnalogWrite(struct wiringPiNodeStruct *node, int pin, int value)
{
int *ptr = (int *)node->data0 ;
int myPin = pin - node->pinBase ;
int *ptr = (int *)(intptr_t)node->data0;
int myPin = pin - node->pinBase;
*(ptr + myPin) = value ;
*(ptr + myPin) = value;
}
@@ -69,27 +71,39 @@ static void myAnalogWrite (struct wiringPiNodeStruct *node, int pin, int value)
*********************************************************************************
*/
int pseudoPinsSetup (const int pinBase)
int pseudoPinsSetup(const int pinBase)
{
struct wiringPiNodeStruct *node ;
void *ptr ;
struct wiringPiNodeStruct *node;
void *ptr;
node = wiringPiNewNode (pinBase, PSEUDO_PINS) ;
node = wiringPiNewNode(pinBase, PSEUDO_PINS);
if (node == NULL) {
fprintf(stderr, "Error creating new wiringPi node");
return FALSE;
}
node->fd = shm_open (SHARED_NAME, O_CREAT | O_RDWR, 0666) ;
node->fd = shm_open(SHARED_NAME, O_CREAT | O_RDWR, 0666);
if (node->fd < 0) {
perror("Error opening shared memory");
return FALSE;
}
if (node->fd < 0)
return FALSE ;
if (ftruncate(node->fd, PSEUDO_PINS * sizeof(int)) < 0) {
perror("Error resizing shared memory");
return FALSE;
}
if (ftruncate (node->fd, PSEUDO_PINS * sizeof (int)) < 0)
return FALSE ;
ptr = mmap(NULL, PSEUDO_PINS * sizeof(int), PROT_READ | PROT_WRITE, MAP_SHARED, node->fd, 0);
if (ptr == MAP_FAILED) {
perror("Error mapping shared memory");
return FALSE;
}
ptr = mmap (NULL, PSEUDO_PINS * sizeof (int), PROT_READ | PROT_WRITE, MAP_SHARED, node->fd, 0) ;
node->data0 = (unsigned int)(uintptr_t)ptr;
node->data0 = (unsigned int)ptr ;
node->analogRead = myAnalogRead;
node->analogWrite = myAnalogWrite;
node->analogRead = myAnalogRead ;
node->analogWrite = myAnalogWrite ;
return TRUE ;
return TRUE;
}

39
wiringPi/wiringPi.c
View File

@@ -536,31 +536,6 @@ const int _0v=-1;
const int _3v=-1;
static int physToSysGPIOPi5 [41] =
{
-1, // 0
_3v, _5v, // 1, 2
401, _5v,
402, _0v,
403, 413,
_0v, 414,
416, 417,
426, _0v,
421, 422,
_3v, 423,
409, _0v,
408, 424,
410, 407,
_0v, 406,
399, 400,
404, _0v,
405, 411,
412, _0v,
418, 415,
425, 419,
_0v, 420, //39, 40
} ;
int GPIOToSysFS(const int pin) {
int sysfspin = pin;
if (RaspberryPiModel<0) { //need to detect pi model
@@ -857,12 +832,12 @@ static void usingGpioMemCheck (const char *what)
void PrintSystemStdErr () {
struct utsname sys_info;
if (uname(&sys_info) == 0) {
fprintf (stderr, " wiringpi = %d.%d\n", VERSION_MAJOR, VERSION_MINOR);
fprintf (stderr, " system name = %s\n", sys_info.sysname);
//fprintf (stderr, " node name = %s\n", sys_info.nodename);
fprintf (stderr, " release = %s\n", sys_info.release);
fprintf (stderr, " version = %s\n", sys_info.version);
fprintf (stderr, " machine = %s\n", sys_info.machine);
fprintf (stderr, " WiringPi : %d.%d\n", VERSION_MAJOR, VERSION_MINOR);
fprintf (stderr, " system name : %s\n", sys_info.sysname);
//fprintf (stderr, " node name : %s\n", sys_info.nodename);
fprintf (stderr, " release : %s\n", sys_info.release);
fprintf (stderr, " version : %s\n", sys_info.version);
fprintf (stderr, " machine : %s\n", sys_info.machine);
if (strstr(sys_info.machine, "arm") == NULL && strstr(sys_info.machine, "aarch")==NULL) {
fprintf (stderr, " -> This is not an ARM architecture; it cannot be a Raspberry Pi.\n") ;
}
@@ -2875,7 +2850,7 @@ int wiringPiSetupPhys (void)
int wiringPiSetupSys (void)
{
piFunctionOops("wiringPiSetupSys",
"use wringpi 3.1 (last version with GPIO Sysfs interface)",
"use WiringPi 3.1 (last version with GPIO Sysfs interface)",
"https://www.kernel.org/doc/html/v5.5/admin-guide/gpio/sysfs.html");
return 0 ;

15
wiringPi/wiringSerial.c
View File

@@ -153,9 +153,12 @@ void serialClose (const int fd)
*********************************************************************************
*/
void serialPutchar (const int fd, const unsigned char c)
void serialPutchar(const int fd, const unsigned char c)
{
write (fd, &c, 1) ;
ssize_t bytes_written = write(fd, &c, 1);
if (bytes_written != 1) {
perror("Error writing to file descriptor");
}
}
@@ -165,9 +168,13 @@ void serialPutchar (const int fd, const unsigned char c)
*********************************************************************************
*/
void serialPuts (const int fd, const char *s)
void serialPuts(const int fd, const char *s)
{
write (fd, s, strlen (s)) ;
size_t len = strlen(s);
ssize_t bytes_written = write(fd, s, len);
if (bytes_written != (ssize_t)len) {
perror("Error writing to file descriptor");
}
}
/*