mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-25 15:58:08 +00:00
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
#include STM32_HAL_H
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#include "button.h"
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#if defined TREZOR_MODEL_1
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#define BTN_LEFT_PIN GPIO_PIN_5
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#define BTN_LEFT_PORT GPIOC
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#define BTN_LEFT_CLK_ENA __HAL_RCC_GPIOC_CLK_ENABLE
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#define BTN_RIGHT_PIN GPIO_PIN_2
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#define BTN_RIGHT_PORT GPIOC
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#define BTN_RIGHT_CLK_ENA __HAL_RCC_GPIOC_CLK_ENABLE
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#elif defined TREZOR_MODEL_R
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#define BTN_LEFT_PIN GPIO_PIN_0
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#define BTN_LEFT_PORT GPIOA
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#define BTN_LEFT_CLK_ENA __HAL_RCC_GPIOA_CLK_ENABLE
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#define BTN_RIGHT_PIN GPIO_PIN_15
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#define BTN_RIGHT_PORT GPIOE
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#define BTN_RIGHT_CLK_ENA __HAL_RCC_GPIOE_CLK_ENABLE
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#else
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#error Unknown Trezor model
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#endif
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static char last_left = 0, last_right = 0;
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void button_init(void) {
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BTN_LEFT_CLK_ENA();
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BTN_RIGHT_CLK_ENA();
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
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GPIO_InitStructure.Pull = GPIO_PULLUP;
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GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
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GPIO_InitStructure.Pin = BTN_LEFT_PIN;
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HAL_GPIO_Init(BTN_LEFT_PORT, &GPIO_InitStructure);
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GPIO_InitStructure.Pin = BTN_RIGHT_PIN;
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HAL_GPIO_Init(BTN_RIGHT_PORT, &GPIO_InitStructure);
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}
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uint32_t button_read(void) {
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char left = (GPIO_PIN_RESET == HAL_GPIO_ReadPin(BTN_LEFT_PORT, BTN_LEFT_PIN));
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char right =
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(GPIO_PIN_RESET == HAL_GPIO_ReadPin(BTN_RIGHT_PORT, BTN_RIGHT_PIN));
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if (last_left != left) {
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last_left = left;
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if (left) {
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return BTN_EVT_DOWN | BTN_LEFT;
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} else {
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return BTN_EVT_UP | BTN_LEFT;
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}
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}
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if (last_right != right) {
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last_right = right;
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if (right) {
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return BTN_EVT_DOWN | BTN_RIGHT;
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} else {
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return BTN_EVT_UP | BTN_RIGHT;
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}
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}
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return 0;
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}
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char button_state_left(void) { return last_left; }
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char button_state_right(void) { return last_right; }
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