2 Copyright 2015 Jun Wako <wakojun@gmail.com>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "led_controller.h"
24 /* WARNING! This function needs to be callable from
25 * both regular threads and ISRs, unlocked (during resume-from-sleep).
26 * In particular, I2C functions (interrupt-driven) should NOT be called from here.
28 void led_set(uint8_t usb_led) {
30 // PTA5: LED (1:on/0:off)
31 GPIOA->PDDR |= (1<<1);
32 PORTA->PCR[5] |= PORTx_PCRn_DSE | PORTx_PCRn_MUX(1);
33 if (usb_led & (1<<USB_LED_CAPS_LOCK)) {
34 GPIOA->PSOR |= (1<<5);
36 GPIOA->PCOR |= (1<<5);
39 //TODO: How does this test if led is set
40 //usb_led --> led_set(usb_led) <-- chibios/host_keyboard_leds <-- keyboard_leds from usbSetupTransfer
41 //keyboard_leds is enum'd in chibios/main.c
42 if (usb_led & (1<<USB_LED_CAPS_LOCK)) {
43 // signal the LED control thread
44 chSysUnconditionalLock();
45 chMBPostI(&led_mailbox, 0x59);
46 chSysUnconditionalUnlock();
48 // signal the LED control thread
49 chSysUnconditionalLock();
50 chMBPostI(&led_mailbox, 0x59);
51 chSysUnconditionalUnlock();