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edison: add hook for handling modes for gpio

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Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
This commit is contained in:
Thomas Ingleby
2014-09-09 11:56:42 +01:00
committed by Brendan Le Foll
parent 0696268be3
commit d43235caf0
1 changed files with 47 additions and 0 deletions
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47
src/intel_edison_fab_c.c
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@@ -28,6 +28,7 @@
#include "common.h"
#include "intel_edison_fab_c.h"
#define SYSFS_CLASS_GPIO "/sys/class/gpio"
#define SYSFS_PINMODE_PATH "/sys/kernel/debug/gpio_debug/gpio"
#define MAX_SIZE 64
#define MAX_MODE_SIZE 8
@@ -327,6 +328,51 @@ mraa_intel_edison_spi_init_post(mraa_spi_context spi)
return MRAA_SUCCESS;
}
mraa_result_t
mraa_intel_edison_gpio_mode_replace(mraa_gpio_context dev, gpio_mode_t mode)
{
if (dev->value_fp != -1) {
close(dev->value_fp);
dev->value_fp = -1;
}
mraa_gpio_context pullup_e;
pullup_e = mraa_gpio_init_raw(pullup_map[dev->phy_pin]);
mraa_result_t sta = mraa_gpio_dir(pullup_e, MRAA_GPIO_IN);
if(sta != MRAA_SUCCESS) {
fprintf(stderr, "MRAA: Edison: Failed to set gpio mode-pullup\n");
return MRAA_ERROR_INVALID_RESOURCE;
}
int value = -1;
switch(mode) {
case MRAA_GPIO_STRONG:
break;
case MRAA_GPIO_PULLUP:
value = 1;
break;
case MRAA_GPIO_PULLDOWN:
value = 0;
break;
case MRAA_GPIO_HIZ:
return MRAA_SUCCESS;
break;
default:
return MRAA_ERROR_FEATURE_NOT_IMPLEMENTED;
}
if (value != -1) {
sta = mraa_gpio_dir(pullup_e, MRAA_GPIO_OUT);
sta = mraa_gpio_write(pullup_e, value);
if (sta != MRAA_SUCCESS) {
fprintf(stderr, "MRAA: Edison: Error Setting pullup");
return sta;
}
}
return MRAA_SUCCESS;
}
mraa_board_t*
mraa_intel_edison_fab_c()
{
@@ -349,6 +395,7 @@ mraa_intel_edison_fab_c()
advance_func->pwm_init_post = &mraa_intel_edison_pwm_init_post;
advance_func->spi_init_pre = &mraa_intel_edison_spi_init_pre;
advance_func->spi_init_post = &mraa_intel_edison_spi_init_post;
advance_func->gpio_mode_replace = &mraa_intel_edison_gpio_mode_replace;
b->pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t)*MRAA_INTEL_EDISON_PINCOUNT);