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Scan the keyboard matrix and output scan codes over USB accordingly.

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This commit is contained in:
László Monda
2016-10-03 23:34:38 +02:00
parent 2ed34073fc
commit e2944663bf
1 changed files with 14 additions and 10 deletions
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24
right/src/usb_interface_keyboard.c
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@@ -67,6 +67,7 @@ pin_t keyboardMatrixRows[] = {
static usb_status_t UsbKeyboardAction(void)
{
uint8_t scancode_i = 0;
UsbKeyboardReport.modifiers = 0;
UsbKeyboardReport.reserved = 0;
@@ -74,18 +75,21 @@ static usb_status_t UsbKeyboardAction(void)
UsbKeyboardReport.scancodes[scancode_idx] = 0;
}
// row 1: PA12
// col 1: PA5
for (uint8_t col=0; col<KEYBOARD_MATRIX_COLS_NUM; col++) {
PORT_SetPinConfig(keyboardMatrixCols[col].port, keyboardMatrixCols[col].pin, &(port_pin_config_t){.pullSelect=kPORT_PullDisable, .mux=kPORT_MuxAsGpio});
GPIO_PinInit(keyboardMatrixCols[col].gpio, keyboardMatrixCols[col].pin, &(gpio_pin_config_t){.pinDirection=kGPIO_DigitalOutput, .outputLogic=1});
GPIO_WritePinOutput(keyboardMatrixCols[col].gpio, keyboardMatrixCols[col].pin, 1);
PORT_SetPinConfig(keyboardMatrixCols[0].port, keyboardMatrixCols[0].pin, &(port_pin_config_t){.pullSelect=kPORT_PullDisable, .mux=kPORT_MuxAsGpio});
GPIO_PinInit(keyboardMatrixCols[0].gpio, keyboardMatrixCols[0].pin, &(gpio_pin_config_t){.pinDirection=kGPIO_DigitalOutput, .outputLogic=1});
GPIO_WritePinOutput(keyboardMatrixCols[0].gpio, keyboardMatrixCols[0].pin, 1);
for (uint8_t row=0; row<KEYBOARD_MATRIX_ROWS_NUM; row++) {
PORT_SetPinConfig(keyboardMatrixRows[row].port, keyboardMatrixRows[row].pin, &(port_pin_config_t){.pullSelect=kPORT_PullDown, .mux=kPORT_MuxAsGpio});
GPIO_PinInit(keyboardMatrixRows[row].gpio, keyboardMatrixRows[row].pin, &(gpio_pin_config_t){.pinDirection=kGPIO_DigitalInput});
PORT_SetPinConfig(keyboardMatrixRows[0].port, keyboardMatrixRows[0].pin, &(port_pin_config_t){.pullSelect=kPORT_PullDown, .mux=kPORT_MuxAsGpio});
GPIO_PinInit(keyboardMatrixRows[0].gpio, keyboardMatrixRows[0].pin, &(gpio_pin_config_t){.pinDirection=kGPIO_DigitalInput});
if (GPIO_ReadPinInput(keyboardMatrixRows[0].gpio, keyboardMatrixRows[0].pin)) {
GPIO_SetPinsOutput(TEST_LED_GPIO, 1 << TEST_LED_GPIO_PIN);
UsbKeyboardReport.scancodes[0] = HID_KEYBOARD_SC_A;
if (GPIO_ReadPinInput(keyboardMatrixRows[row].gpio, keyboardMatrixRows[row].pin)) {
GPIO_SetPinsOutput(TEST_LED_GPIO, 1 << TEST_LED_GPIO_PIN);
UsbKeyboardReport.scancodes[scancode_i] = HID_KEYBOARD_SC_A + row*KEYBOARD_MATRIX_COLS_NUM + col;
}
}
GPIO_WritePinOutput(keyboardMatrixCols[col].gpio, keyboardMatrixCols[col].pin, 0);
}
return USB_DeviceHidSend(UsbCompositeDevice.keyboardHandle, USB_KEYBOARD_ENDPOINT_INDEX,