Shaping it up

bcm_iton.c

/*
Copyright 2021 Dimitris Mantzouranis <d3xter93@gmail.com>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include <stdint.h>
#include <stdbool.h>
#include "quantum.h"
#include "hal.h"
uint8_t ble_led_status = 0;
static uint8_t iton_ble_leds(void);
static void    iton_ble_keyboard(report_keyboard_t *report);
static void    iton_ble_mouse(report_mouse_t *report);
static void    iton_ble_system(uint16_t data);
static void    iton_ble_consumer(uint16_t data);
static host_driver_t *lastHostDriver = NULL;

host_driver_t iton_ble_driver = {
    iton_ble_leds,
    iton_ble_keyboard,
    iton_ble_mouse,
    iton_ble_system,
    iton_ble_consumer,
};

enum page {
    std_hid   = 0xA1, //Standard HID Report
    nkro_hid  = 0xA2, //NKRO Report
    media_hid = 0xA3, //Media keys Report
    sys_rep   = 0xA4, //System control Report
    fn_hid    = 0xA5, //Fn keys Report
    bt_ctrl   = 0xA6, //Bluetooth control Report
    bt_name   = 0xA7, //Bluetooth name Report
    pwr_val   = 0xA8, //Power values set Report
    led_state = 0xB1, //LED Indicators Report
    pwr_state = 0xB6, //Power status Report
};

enum bt_control_addr{
    bt_status    = 0x51, //Bluetooth status
    batt_low     = 0x52, //Battery low voltage
    batt_dead    = 0x53, //Battery dead/shutdown voltage
    usb_status   = 0x58, //USB status
    batt_status  = 0x5A, //Battery status
    sys_poweroff = 0xA8, //System Power down
    sys_sleep    = 0xA9, //System sleep
    sys_wakeup   = 0xAA, //System wake up
};

enum bt_control_data{
    usb_mode_sw   = 0x01, //USB mode
    low_batt_not  = 0x06, //Low battery voltage notification
    low_batt_off  = 0x07, //Low battery shutdown notification
    low_batt_ok   = 0x0A, //Low battery disable notification
    bt_mode_sw    = 0x62, //Bluetooth mode
    bt_pair_rst   = 0x70, //Reset Bluetooth pairing info
    mac_os        = 0x74, //MAC OS mode
    win_os        = 0x75, //Windows mode
    bt_pair_ok    = 0x76, //Bluetooth pairing successful
    bt_pair_init  = 0x77, //Bluetooth pairing init
    bt_pair_disc  = 0x78, //Bluetooth disconnected - enter sleep
    bt_pair_conn  = 0x79, //Bluetooth reconnecting
    bt_pair       = 0x89, //Enter pairing mode
    bt_pair_one   = 0x81, //Pair the 1st host
    bt_pair_two   = 0x82, //Pair the 2nd host
    bt_pair_three = 0x83, //Pair the 3rd host
    bt_pair_four  = 0x84, //Pair the 4th host
    bt_pair_five  = 0x85, //Pair the 5th host
    bt_pair_six   = 0x86, //Pair the 6th host
    mode_is_bt    = 0xA0, //Mode query
    bt_is_name    = 0xA1, //Bluetooth name query
};

struct bt_ctrl_msg {
  uint8_t type;
  uint8_t cmd;
  uint8_t param;
};

struct iton_name {
    uint8_t type=bt_name;
    uint16_t checksum;
    uint8_t len;
    (uint8_t *)name;
};

static uint8_t iton_ble_leds(void) {
    return ble_led_status;
}

static void iton_ble_keyboard(report_keyboard_t *report) {
#ifdef NKRO_ENABLE
    uint8_t buffer[17] = {nkro_hid, report->nkro.mods};
#else
    uint8_t buffer[KEYBOARD_REPORT_SIZE+3] = 0;
    buffer[0] = std_hid;
    buffer[1] = report->report.mods;
    for (uint8_t i = 0; i < KEYBOARD_REPORT_SIZE; i++) {
        buffer[i+3] = report->raw[i];
    }
#endif
    spiStartSend(&SPID1, sizeof(buffer), buffer);
}
static void iton_ble_mouse(report_mouse_t *report) {}    // Not Supported

static void iton_ble_system(uint16_t data){
    uint8_t buffer[];
    buffer[0] = sys_rep;
    buffer[1] = (data + 0x27);
    spiStartSend(&SPID1, sizeof(buffer), buffer);
}

static void iton_ble_consumer(uint16_t data){
    const struct bt_ctrl_msg *msg;
    msg->type = media_hid;
    msg->cmd = (uint8_t)(data >> 8);
    msg->param = (uint8_t)(data & 0x00FF);
    spiStartSend(&SPID1, sizeof(msg), &msg);
}

static void iton_control(const struct bt_ctrl_msg *msg, uint8_t cmd, uint8_t param) {
    msg->type = bt_ctrl;
    msg->cmd = cmd;
    msg->param = param;
    spiStartSend(&SPID1, sizeof(msg), &msg);
}

void iton_switch_bt() {
    if (host_get_driver() == &iton_ble_driver) {
        return;
    }
    clear_keyboard();
    lastHostDriver = host_get_driver();
    iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_mode_sw);
    host_set_driver(&iton_ble_driver);
}

void iton_switch_usb() {
    if (host_get_driver() != &iton_ble_driver) {
        return;
    }
    clear_keyboard();
    iton_control(const struct bt_ctrl_msg *msg, usb_status, usb_mode_sw);
    host_set_driver(lastHostDriver);
}

void iton_clear_pairing() {
    iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_pair_rst);
}

void iton_enter_pairing() {
    iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_pair);
}

void iton_select_host(uint8_t host) {
    switch(host) {
        case 1:
            iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_pair_one);
            break;
        case 2:
            iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_pair_two);
            break;
        case 3:
            iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_pair_three);
            break;
        case 4:
            iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_pair_four);
            break;
        case 5:
            iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_pair_five);
            break;
        case 6:
            iton_control(const struct bt_ctrl_msg *msg, bt_status, bt_pair_six);
            break;
        default:
        ;
    }
}

void iton_macos_mode() {
    iton_control(const struct bt_ctrl_msg *msg, bt_status, mac_os);
}

void iton_windows_mode() {
    iton_control(const struct bt_ctrl_msg *msg, bt_status, win_os);
}

void iton_set_device_name(char *name) {
const struct iton_name *msg;
    msg->len = sizeof(name);
    if (msg->len < 32){
        msg->checksum = 0;
        for (uint8_t i = 0; i < msg->len; i++) {
            msg->checksum += name[i];
        }
        spiStartSend(&SPID1, sizeof(msg), &msg);
    } else {
        return;
    }
}

static void iton_receive_notif(const struct bt_ctrl_msg *msg) {
    spiStartReceive(&SPID1, sizeof(msg), &msg);
    if(msg->type == led_state) {
        ble_led_status=msg->cmd;
    }
    else if (msg->type == batt_status) {
        switch(msg->param) {
            case low_batt_not:
                break;
            case low_batt_off:
                break;
            case low_batt_ok:
                break;
            case mode_is_bt:
                break;
            case bt_is_name:
                break;
            default:
            ;
        }
    }
    else if (msg->type == bt_status) {
        switch(msg->param) {
            case bt_pair_ok:
                break;
            case bt_pair_init:
                break;
            case bt_pair_disc:
                break;
            case bt_pair_conn:
                break;
            default:
            ;
        }
    }
}