mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-10-11 18:39:05 +00:00
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* Copyright (c) Pavol Rusnak, SatoshiLabs
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*
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* Licensed under TREZOR License
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* see LICENSE file for details
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*/
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extern I2C_HandleTypeDef i2c_handle;
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extern struct _USBD_HandleTypeDef hUSBDDevice;
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extern uint8_t USBD_HID_SendReport(struct _USBD_HandleTypeDef *pdev, uint8_t *report, uint16_t len);
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extern int USBD_HID_Rx(uint8_t *buf, uint32_t len, uint32_t timeout);
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void msg_init(void)
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{
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}
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ssize_t msg_recv(uint8_t *iface, uint8_t *buf, size_t len)
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{
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*iface = 0; // TODO: return proper interface
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return USBD_HID_Rx(buf, len, 1);
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}
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ssize_t msg_send(uint8_t iface, const uint8_t *buf, size_t len)
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{
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(void)iface; // TODO: ignore interface for now
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if (len > 0) {
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USBD_HID_SendReport(&hUSBDDevice, (uint8_t *)buf, len);
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}
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return len;
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}
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uint32_t msg_poll_touch(void)
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{
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static uint8_t data[16], old_data[16];
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if (HAL_OK != HAL_I2C_Master_Receive(&i2c_handle, 56 << 1, data, 16, 1)) {
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return 0; // read failure
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}
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if (0 == memcmp(data, old_data, 16)) {
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return 0; // no new event
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}
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uint32_t r = 0;
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if (old_data[2] == 0 && data[2] == 1) {
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r = 0x00010000 + (data[4] << 8) + data[6]; // touch start
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} else
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if (old_data[2] == 1 && data[2] == 1) {
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r = 0x00020000 + (data[4] << 8) + data[6]; // touch move
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}
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if (old_data[2] == 1 && data[2] == 0) {
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r = 0x00040000 + (data[4] << 8) + data[6]; // touch end
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}
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memcpy(old_data, data, 16);
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return r;
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}
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