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pwm: add period write replace hook

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Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
This commit is contained in:
Thomas Ingleby
2014-07-24 14:20:01 +01:00
parent 1f6afb0a18
commit 715863cd28
2 changed files with 5 additions and 0 deletions
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2
include/mraa_adv_func.h
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@@ -49,4 +49,6 @@ typedef struct {
mraa_result_t (*i2c_init_pre) (unsigned int bus); mraa_result_t (*i2c_init_pre) (unsigned int bus);
mraa_result_t (*i2c_init_post) (mraa_i2c_context dev); mraa_result_t (*i2c_init_post) (mraa_i2c_context dev);
mraa_result_t (*pwm_period_replace) (mraa_pwm_context dev, int period);
} mraa_adv_func_t; } mraa_adv_func_t;

3
src/pwm/pwm.c
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@@ -60,6 +60,9 @@ mraa_pwm_setup_duty_fp(mraa_pwm_context dev)
static mraa_result_t static mraa_result_t
mraa_pwm_write_period(mraa_pwm_context dev, int period) mraa_pwm_write_period(mraa_pwm_context dev, int period)
{ {
if (advance_func->pwm_period_replace != NULL)
return advance_func->pwm_period_replace(dev,period);
char bu[MAX_SIZE]; char bu[MAX_SIZE];
snprintf(bu,MAX_SIZE ,"/sys/class/pwm/pwmchip%d/pwm%d/period", dev->chipid, dev->pin); snprintf(bu,MAX_SIZE ,"/sys/class/pwm/pwmchip%d/pwm%d/period", dev->chipid, dev->pin);