Others/CHIP_IO
1
0
Fork 0
mirror of https://github.com/xtacocorex/CHIP_IO synced 2025-07-20 04:43:21 +00:00
Code Issues Releases Activity

Got rid of last of GPIO port constants from code.

Browse Source
This commit is contained in:
fordsfords
2016-06-25 20:02:45 -05:00
parent 34167a9574
commit 1f4714a351
5 changed files with 75 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
source/c_pwm.c
View File

@ -89,7 +89,7 @@ int initialize_pwm(void)
return -1;
}
len = snprintf(str_gpio, sizeof(str_gpio), "%d", gpio);
write(fd, str_gpio, len);
ssize_t s = write(fd, str_gpio, len); ASSRT(s == len);
close(fd);
pwm_initialized = 1;
@ -120,7 +120,7 @@ int pwm_set_frequency(const char *key, float freq) {
pwm->period_ns = period_ns;
len = snprintf(buffer, sizeof(buffer), "%lu", period_ns);
write(pwm->period_fd, buffer, len);
ssize_t s = write(pwm->period_fd, buffer, len); ASSRT(s == len);
}
return 1;
@ -148,7 +148,7 @@ int pwm_set_polarity(const char *key, int polarity) {
{
len = snprintf(buffer, sizeof(buffer), "%s", "inverted");
}
write(pwm->polarity_fd, buffer, len);
ssize_t s = write(pwm->polarity_fd, buffer, len); ASSRT(s == len);
return 0;
}
@ -170,7 +170,7 @@ int pwm_set_duty_cycle(const char *key, float duty) {
pwm->duty = (unsigned long)(pwm->period_ns * (duty / 100.0));
len = snprintf(buffer, sizeof(buffer), "%lu", pwm->duty);
write(pwm->duty_fd, buffer, len);
ssize_t s = write(pwm->duty_fd, buffer, len); ASSRT(s == len);
return 0;
}
@ -193,7 +193,7 @@ int pwm_set_enable(const char *key, int enable)
pwm->enable = enable;
len = snprintf(buffer, sizeof(buffer), "%d", pwm->enable);
write(pwm->enable_fd, buffer, len);
ssize_t s = write(pwm->enable_fd, buffer, len); ASSRT(s == len);
return 0;
}
@ -213,7 +213,7 @@ int pwm_start(const char *key, float duty, float freq, int polarity)
}
//setup the pwm base path, the chip only has one pwm
snprintf(pwm_base_path, sizeof(pwm_base_path), "/sys/class/pwm/pwmchip0/%d", "pwm0");
snprintf(pwm_base_path, sizeof(pwm_base_path), "/sys/class/pwm/pwmchip0/pwm%d", 0);
//create the path for the period and duty
snprintf(enable_path, sizeof(enable_path), "%s/enable", pwm_base_path);
@ -283,7 +283,6 @@ int pwm_start(const char *key, float duty, float freq, int polarity)
int pwm_disable(const char *key)
{
struct pwm_exp *pwm, *temp, *prev_pwm = NULL;
char fragment[18];
int fd, len;
char str_gpio[2];
@ -302,7 +301,7 @@ int pwm_disable(const char *key)
return -1;
}
len = snprintf(str_gpio, sizeof(str_gpio), "%d", gpio);
write(fd, str_gpio, len);
ssize_t s = write(fd, str_gpio, len); ASSRT(s == len);
close(fd);
// remove from list