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x86/edison: only toggle tristate on physical pins

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Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
This commit is contained in:
Thomas Ingleby
2014-12-12 12:25:29 +00:00
parent f277e7d35a
commit f6a05b128d
1 changed files with 9 additions and 6 deletions
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7
src/x86/intel_edison_fab_c.c
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@@ -96,13 +96,13 @@ mraa_intel_edison_pinmode_change(int sysfs, int mode)
mraa_result_t mraa_result_t
mraa_intel_edison_gpio_dir_pre(mraa_gpio_context dev, gpio_dir_t dir) mraa_intel_edison_gpio_dir_pre(mraa_gpio_context dev, gpio_dir_t dir)
{ {
if (dev->phy_pin >= 0) {
if (mraa_gpio_write(tristate, 0) != MRAA_SUCCESS) { if (mraa_gpio_write(tristate, 0) != MRAA_SUCCESS) {
// call can sometimes fail, this does not actually mean much except // call can sometimes fail, this does not actually mean much except
// that the kernel drivers don't always behave very well // that the kernel drivers don't always behave very well
syslog(LOG_NOTICE, "edison: Failed to write to tristate"); syslog(LOG_NOTICE, "edison: Failed to write to tristate");
} }
if (dev->phy_pin >= 0) {
int pin = dev->phy_pin; int pin = dev->phy_pin;
mraa_gpio_context output_e; mraa_gpio_context output_e;
@@ -131,8 +131,11 @@ mraa_intel_edison_gpio_dir_pre(mraa_gpio_context dev, gpio_dir_t dir)
mraa_result_t mraa_result_t
mraa_intel_edison_gpio_dir_post(mraa_gpio_context dev, gpio_dir_t dir) mraa_intel_edison_gpio_dir_post(mraa_gpio_context dev, gpio_dir_t dir)
{ {
if (dev->phy_pin >= 0) {
return mraa_gpio_write(tristate, 1); return mraa_gpio_write(tristate, 1);
} }
return MRAA_SUCCESS;
}
mraa_result_t mraa_result_t
mraa_intel_edison_gpio_init_post(mraa_gpio_context dev) mraa_intel_edison_gpio_init_post(mraa_gpio_context dev)