+
+ case TOGGLE_BACKLIGHT:
+ //msg_args[0] = on/off
+
+ //populate 9 byte rows to be written to each pin, first byte is register (pin) address
+ if (msg_args[0] == 1) {
+ __builtin_memset(pwm_register_array+1, pwm_levels[pwm_step_status], 8);
+ } else {
+ __builtin_memset(pwm_register_array+1, 0, 8);
+ }
+
+ for(i=0; i<8; i++) {
+ //first byte is register address, every 0x10 9 bytes is A-matrix pwm pins
+ pwm_register_array[0] = 0x24 + (i * 0x10);
+ is31_write_data(0,pwm_register_array,9);
+ }
+ break;
+
+ case DISPLAY_PAGE:
+ //msg_args[0] = page to toggle on
+ if (page_status != msg_args[0]) {
+ is31_write_register(IS31_FUNCTIONREG, IS31_REG_PICTDISP, msg_args[0]);
+ page_status = msg_args[0];
+
+ //maintain lock leds, reset to off and force recheck for new page
+ numlock_status = 0;
+ capslock_status = 0;
+ led_set(host_keyboard_leds());
+ }
+ break;
+
+ case RESET_PAGE:
+ //led_args[0] = page to reset
+ led_control_reg[0] = 0;
+ __builtin_memset(led_control_reg+1, 0, 0x12);
+ is31_write_data(msg_args[0], led_control_reg, 0x13);
+
+ //repeat for blink register
+ led_control_reg[0] = 0x12;
+ is31_write_data(msg_args[0], led_control_reg, 0x13);
+ break;
+
+ case TOGGLE_NUM_LOCK:
+ //msg_args[0] = 0 or 1, off/on
+ if (numlock_status != msg_args[0]) {
+ set_lock_leds(NUM_LOCK_LED_ADDRESS, msg_args[0], page_status);
+ numlock_status = msg_args[0];
+ }
+ break;
+ case TOGGLE_CAPS_LOCK:
+ //msg_args[0] = 0 or 1, off/on
+ if (capslock_status != msg_args[0]) {
+ set_lock_leds(CAPS_LOCK_LED_ADDRESS, msg_args[0], page_status);
+ capslock_status = msg_args[0];
+ }
+ break;
+
+ case STEP_BRIGHTNESS:
+ //led_args[0] = step up (1) or down (0)
+ switch (msg_args[0]) {
+ case 0:
+ if (pwm_step_status == 0) {
+ pwm_step_status = 4;
+ } else {
+ pwm_step_status--;
+ }
+ break;
+
+ case 1:
+ if (pwm_step_status == 4) {
+ pwm_step_status = 0;
+ } else {
+ pwm_step_status++;
+ }
+ break;
+ }
+
+ //populate 8 byte arrays to write on each pin
+ //first byte is register address, every 0x10 9 bytes are A-matrix pwm pins
+ __builtin_memset(pwm_register_array+1, pwm_levels[pwm_step_status], 8);
+
+ for(i=0; i<8; i++) {
+ pwm_register_array[0] = 0x24 + (i * 0x10);
+ is31_write_data(0,pwm_register_array,9);
+ }