ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

STM32: gpio SPEED - always set High Speed by default 

Up to now, speed was set for outputs and alternate, but this is
also valid for input configuration.

By default, let's configure high speed.

This is done firts, because speed for some families like F1 is mixed
with Input/Output mode settings, so can be later over-ridden if needed.
pull/3840/head
Laurent MEUNIER 2017-01-18 18:51:07 +01:00
parent 3a27568a50
commit 453b248bf4
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
targets/TARGET_STM/pinmap.c
View File

@ -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 {