#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
+#include <ctype.h>
+#include "options.h"
/**
* Structure to represent a GPIO pin
*/
typedef struct
{
- FILE * file_value;
+ int fd_value;
} ADC_Pin;
/**
void GPIO_Export(int pin)
{
if (pin < 0 || pin > GPIO_NUM_PINS)
- Fatal("Invalid pin number %d", pin);
+ {
+ Abort("Invalid pin number %d", pin);
+ }
sprintf(g_buffer, "%s/export", GPIO_DEVICE_PATH);
FILE * export = fopen(g_buffer, "w");
if (export == NULL)
- Fatal("Couldn't open %s to export GPIO pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s to export GPIO pin %d - %s", g_buffer, pin, strerror(errno));
+ }
fprintf(export, "%d", pin);
fclose(export);
sprintf(g_buffer, "%s/gpio%d/direction", GPIO_DEVICE_PATH, pin);
g_gpio[pin].fd_direction = open(g_buffer, O_RDWR);
if (g_gpio[pin].fd_direction < 0)
- Fatal("Couldn't open %s for GPIO pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s for GPIO pin %d - %s", g_buffer, pin, strerror(errno));
+ }
// Setup value file descriptor
sprintf(g_buffer, "%s/gpio%d/value", GPIO_DEVICE_PATH, pin);
g_gpio[pin].fd_value = open(g_buffer, O_RDWR);
if (g_gpio[pin].fd_value < 0)
- Fatal("Couldn't open %s for GPIO pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s for GPIO pin %d - %s", g_buffer, pin, strerror(errno));
+ }
+
+ Log(LOGDEBUG, "Exported GPIO%d", pin);
+ //sleep(1);
}
/**
{
if (pin < 0 || pin > GPIO_NUM_PINS)
- Fatal("Invalid pin number %d", pin);
+ {
+ Abort("Invalid pin number %d", pin);
+ }
// Close file descriptors
close(g_gpio[pin].fd_value);
sprintf(g_buffer, "%s/unexport", GPIO_DEVICE_PATH);
FILE * export = fopen(g_buffer, "w");
if (export == NULL)
- Fatal("Couldn't open %s to export GPIO pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s to export GPIO pin %d - %s", g_buffer, pin, strerror(errno));
+ }
fprintf(export, "%d", pin);
fclose(export);
void PWM_Export(int pin)
{
if (pin < 0 || pin > PWM_NUM_PINS)
- Fatal("Invalid pin number %d", pin);
+ {
+ Abort("Invalid pin number %d", pin);
+ }
// Export the pin
sprintf(g_buffer, "%s/export", PWM_DEVICE_PATH);
FILE * export = fopen(g_buffer, "w");
if (export == NULL)
- Fatal("Couldn't open %s to export PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s to export PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ }
- fprintf(export, "%d", pin);
+ fprintf(export, "%d\n", pin);
fclose(export);
// Open file descriptors
sprintf(g_buffer, "%s/pwm%d/run", PWM_DEVICE_PATH, pin);
g_pwm[pin].fd_run = open(g_buffer, O_WRONLY);
if (g_pwm[pin].fd_run < 0)
- Fatal("Couldn't open %s for PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s for PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ }
sprintf(g_buffer, "%s/pwm%d/polarity",PWM_DEVICE_PATH, pin);
g_pwm[pin].fd_polarity = open(g_buffer, O_WRONLY);
if (g_pwm[pin].fd_polarity < 0)
- Fatal("Couldn't open %s for PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s for PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ }
sprintf(g_buffer, "%s/pwm%d/period_ns",PWM_DEVICE_PATH, pin);
g_pwm[pin].file_period = fopen(g_buffer, "w");
if (g_pwm[pin].file_period == NULL)
- Fatal("Couldn't open %s for PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s for PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ }
sprintf(g_buffer, "%s/pwm%d/duty_ns",PWM_DEVICE_PATH, pin);
g_pwm[pin].file_duty = fopen(g_buffer, "w");
if (g_pwm[pin].file_duty == NULL)
- Fatal("Couldn't open %s for PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s for PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ }
// Don't buffer the streams
setbuf(g_pwm[pin].file_period, NULL);
void PWM_Unexport(int pin)
{
if (pin < 0 || pin > PWM_NUM_PINS)
- Fatal("Invalid pin number %d", pin);
+ {
+ Abort("Invalid pin number %d", pin);
+ }
// Close the file descriptors
close(g_pwm[pin].fd_polarity);
sprintf(g_buffer, "%s/unexport", PWM_DEVICE_PATH);
FILE * export = fopen(g_buffer, "w");
if (export == NULL)
- Fatal("Couldn't open %s to unexport PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ {
+ Abort("Couldn't open %s to unexport PWM pin %d - %s", g_buffer, pin, strerror(errno));
+ }
fprintf(export, "%d", pin);
fclose(export);
*/
void ADC_Export()
{
-
- FILE * export = fopen(ADC_EXPORT_PATH, "w");
- if (export == NULL)
- Fatal("Couldn't open %s to export ADCs - %s", ADC_EXPORT_PATH, strerror(errno));
-
- fprintf(export, "cape-bone-iio");
- fclose(export);
-
for (int i = 0; i < ADC_NUM_PINS; ++i)
{
- sprintf(g_buffer, "%s/AIN%d", ADC_DEVICE_PATH, i);
- g_adc[i].file_value = fopen(g_buffer, "r");
- if (g_adc[i].file_value == NULL)
- Fatal("Couldn't open ADC %d device file %s - %s", i, g_buffer, strerror(errno));
+ sprintf(g_buffer, "%s/AIN%d", g_options.adc_device_path, i);
+ g_adc[i].fd_value = open(g_buffer, O_RDONLY);
+ if (g_adc[i].fd_value < 0)
+ {
+ Abort("Couldn't open ADC %d device file %s - %s", i, g_buffer, strerror(errno));
+ }
- setbuf(g_adc[i].file_value, NULL);
+ //setbuf(g_adc[i].file_value, NULL);
}
}
void ADC_Unexport()
{
for (int i = 0; i < ADC_NUM_PINS; ++i)
- fclose(g_adc[i].file_value);
+ close(g_adc[i].fd_value);
}
/**
*/
void GPIO_Set(int pin, bool value)
{
- if (pwrite(g_gpio[pin].fd_direction, "out", 3*sizeof(char), 0) != 3)
- Fatal("Couldn't set GPIO %d direction - %s", pin, strerror(errno));
+ if (pwrite(g_gpio[pin].fd_direction, "out", 3, 0) != 3)
+ {
+ Abort("Couldn't set GPIO %d direction - %s", pin, strerror(errno));
+ }
char c = '0' + (value);
- if (pwrite(g_gpio[pin].fd_value, &c, 1*sizeof(char), 0) != 1)
- Fatal("Couldn't read GPIO %d value - %s", pin, strerror(errno));
+ if (pwrite(g_gpio[pin].fd_value, &c, 1, 0) != 1)
+ {
+ Abort("Couldn't read GPIO %d value - %s", pin, strerror(errno));
+ }
}
*/
bool GPIO_Read(int pin)
{
- if (pwrite(g_gpio[pin].fd_direction, "in", 2*sizeof(char), 0) != 2)
- Fatal("Couldn't set GPIO %d direction - %s", pin, strerror(errno));
+ if (pwrite(g_gpio[pin].fd_direction, "in", 2, 0) != 2)
+ Log(LOGERR,"Couldn't set GPIO %d direction - %s", pin, strerror(errno));
char c = '0';
- if (pread(g_gpio[pin].fd_value, &c, 1*sizeof(char), 0) != 1)
- Fatal("Couldn't read GPIO %d value - %s", pin, strerror(errno));
+ if (pread(g_gpio[pin].fd_value, &c, 1, 0) != 1)
+ Log(LOGERR,"Couldn't read GPIO %d value - %s", pin, strerror(errno));
return (c == '1');
void PWM_Set(int pin, bool polarity, long period, long duty)
{
// Have to stop PWM before changing it
- if (pwrite(g_pwm[pin].fd_run, "0", 1*sizeof(char), 0) != 1)
- Fatal("Couldn't stop PWM %d - %s", pin, strerror(errno));
+ if (pwrite(g_pwm[pin].fd_run, "0", 1, 0) != 1)
+ {
+ Abort("Couldn't stop PWM %d - %s", pin, strerror(errno));
+ }
char c = '0' + polarity;
- if (pwrite(g_pwm[pin].fd_polarity, &c, 1*sizeof(char), 0) != 1)
- Fatal("Couldn't set PWM %d polarity - %s", pin, strerror(errno));
-
+ if (pwrite(g_pwm[pin].fd_polarity, &c, 1, 0) != 1)
+ {
+ Abort("Couldn't set PWM %d polarity - %s", pin, strerror(errno));
+ }
rewind(g_pwm[pin].file_period);
rewind(g_pwm[pin].file_duty);
if (fprintf(g_pwm[pin].file_duty, "%lu", duty) == 0)
- Fatal("Couldn't set duty cycle for PWM %d - %s", pin, strerror(errno));
-
+ {
+ Abort("Couldn't set duty cycle for PWM %d - %s", pin, strerror(errno));
+ }
if (fprintf(g_pwm[pin].file_period, "%lu", period) == 0)
- Fatal("Couldn't set period for PWM %d - %s", pin, strerror(errno));
-
- if (pwrite(g_pwm[pin].fd_run, "1", 1*sizeof(char), 0) != 1)
- Fatal("Couldn't start PWM %d - %s", pin, strerror(errno));
+ {
+ Abort("Couldn't set period for PWM %d - %s", pin, strerror(errno));
+ }
+ if (pwrite(g_pwm[pin].fd_run, "1", 1, 0) != 1)
+ {
+ Abort("Couldn't start PWM %d - %s", pin, strerror(errno));
+ }
}
*/
void PWM_Stop(int pin)
{
- if (pwrite(g_pwm[pin].fd_run, "0", 1*sizeof(char), 0) != 1)
- Fatal("Couldn't stop PWM %d - %s", pin, strerror(errno));
-
+ if (pwrite(g_pwm[pin].fd_run, "0", 1, 0) != 1)
+ {
+ Abort("Couldn't stop PWM %d - %s", pin, strerror(errno));
+ }
}
/**
* @param id - The ID of the ADC pin to read
* @returns - The reading of the ADC channel
*/
-long ADC_Read(int id)
+int ADC_Read(int id)
{
-
- //Log(LOGDEBUG, "Called for pin %d", id);
- char adc_val[ADC_DIGITS] = "";
- rewind(g_adc[id].file_value);
- fgets(adc_val, sizeof(adc_val)/sizeof(char), g_adc[id].file_value);
- for(int i = ADC_DIGITS-1; i > 0; --i)
+ char adc_str[ADC_DIGITS] = "";
+ lseek(g_adc[id].fd_value, 0, SEEK_SET);
+
+ int i = 0;
+ for (i = 0; i < ADC_DIGITS-1; ++i)
{
- if (adc_val[i] == '\n')
- adc_val[i] = '\0';
+ if (read(g_adc[id].fd_value, adc_str+i, 1) != 1)
+ break;
+ if (adc_str[i] == '\n')
+ {
+ adc_str[i] = '\0';
+ break;
+ }
}
char * end;
- long val = strtol(adc_val, &end, 10);
+ int val = strtol(adc_str, &end, 10);
if (*end != '\0')
{
- Log(LOGERR, "Reading ADC%d gives %s - invalid!", id, adc_val);
- }
- //Log(LOGDEBUG, "Returns %lu", val);
- return val;
+ Log(LOGERR, "Read non integer from ADC %d - %s", id, adc_str);
+ }
+ return val;
}
git.ucc.asn.au / matches / MCTX3420.git / blobdiff
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