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px4fmu-v4:Insure the discharge of the pins PWM pins on rest.

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On resets invoked from system (not boot) insure we establish a low
  output state (discharge the pins) on PWM pins before they become
  inputs.
This commit is contained in:
David Sidrane
2017-07-08 10:51:43 +02:00
committed by Lorenz Meier
parent 38fa6dcad5
commit 65d8b5c9cd
1 changed files with 9 additions and 1 deletions
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src/drivers/boards/px4fmu-v4/px4fmu_init.c
+9 -1
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@@ -165,14 +165,22 @@ __EXPORT void board_peripheral_reset(int ms)
************************************************************************************/ ************************************************************************************/
__EXPORT void board_on_reset(int status) __EXPORT void board_on_reset(int status)
{ {
UNUSED(status);
/* configure the GPIO pins to outputs and keep them low */ /* configure the GPIO pins to outputs and keep them low */
stm32_configgpio(GPIO_GPIO0_OUTPUT); stm32_configgpio(GPIO_GPIO0_OUTPUT);
stm32_configgpio(GPIO_GPIO1_OUTPUT); stm32_configgpio(GPIO_GPIO1_OUTPUT);
stm32_configgpio(GPIO_GPIO2_OUTPUT); stm32_configgpio(GPIO_GPIO2_OUTPUT);
stm32_configgpio(GPIO_GPIO3_OUTPUT); stm32_configgpio(GPIO_GPIO3_OUTPUT);
stm32_configgpio(GPIO_GPIO4_OUTPUT); stm32_configgpio(GPIO_GPIO4_OUTPUT);
stm32_configgpio(GPIO_GPIO5_OUTPUT); stm32_configgpio(GPIO_GPIO5_OUTPUT);
/* On resets invoked from system (not boot) insure we establish a low
* output state (discharge the pins) on PWM pins before they become inputs.
*/
if (status >= 0) {
up_mdelay(6);
}
} }
/************************************************************************************ /************************************************************************************