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Merge pull request #3840 from LMESTM/fix_smt32_gpio_default_speed 

STM32: gpio SPEED - always set High Speed by default
pull/3898/head
Martin Kojtal 2017-03-06 16:54:08 +00:00 committed by GitHub
parent 1be7418883 453b248bf4
commit ede2a11be4
1 changed files with 10 additions and 1 deletions
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11
targets/TARGET_STM/pinmap.c
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@ -71,6 +71,16 @@ void pin_function(PinName pin, int data)
// Enable GPIO clock
GPIO_TypeDef *gpio = Set_GPIO_Clock(port);
/* Set default speed to high.
* This is done before other settings on purpose:
* For most families there are dedicated registers so it is
* not so important, register can be set at any time.
* But for families like F1, speed only applies to output. so we set
* it here, and then if input is selected, this setting might be
* overriden by the input one.
*/
LL_GPIO_SetPinSpeed(gpio, ll_pin, LL_GPIO_SPEED_FREQ_HIGH);
switch (mode) {
case STM_PIN_INPUT:
ll_mode = LL_GPIO_MODE_INPUT;
@ -103,7 +113,6 @@ void pin_function(PinName pin, int data)
/* For now by default use Speed HIGH for output or alt modes */
if ((mode == STM_PIN_OUTPUT) ||(mode == STM_PIN_ALTERNATE)) {
LL_GPIO_SetPinSpeed(gpio, ll_pin, LL_GPIO_SPEED_FREQ_HIGH);
if (STM_PIN_OD(data)) {
LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_OPENDRAIN);
} else {