diff options
Diffstat (limited to 'keyboards/infinity_ergodox/lcd_backlight_hal.c')
| -rw-r--r-- | keyboards/infinity_ergodox/lcd_backlight_hal.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/keyboards/infinity_ergodox/lcd_backlight_hal.c b/keyboards/infinity_ergodox/lcd_backlight_hal.c deleted file mode 100644 index 05fc810b4b..0000000000 --- a/keyboards/infinity_ergodox/lcd_backlight_hal.c +++ /dev/null @@ -1,84 +0,0 @@ -/* -Copyright 2016 Fred Sundvik <fsundvik@gmail.com> -Jun Wako <wakojun@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 "lcd_backlight.h" -#include "hal.h" - -#define RED_PIN 1 -#define GREEN_PIN 2 -#define BLUE_PIN 3 -#define CHANNEL_RED FTM0->CHANNEL[0] -#define CHANNEL_GREEN FTM0->CHANNEL[1] -#define CHANNEL_BLUE FTM0->CHANNEL[2] - -#define RGB_PORT PORTC -#define RGB_PORT_GPIO GPIOC - -// Base FTM clock selection (72 MHz system clock) -// @ 0xFFFF period, 72 MHz / (0xFFFF * 2) = Actual period -// Higher pre-scalar will use the most power (also look the best) -// Pre-scalar calculations -// 0 - 72 MHz -> 549 Hz -// 1 - 36 MHz -> 275 Hz -// 2 - 18 MHz -> 137 Hz -// 3 - 9 MHz -> 69 Hz (Slightly visible flicker) -// 4 - 4 500 kHz -> 34 Hz (Visible flickering) -// 5 - 2 250 kHz -> 17 Hz -// 6 - 1 125 kHz -> 9 Hz -// 7 - 562 500 Hz -> 4 Hz -// Using a higher pre-scalar without flicker is possible but FTM0_MOD will need to be reduced -// Which will reduce the brightness range -#define PRESCALAR_DEFINE 0 - -void lcd_backlight_hal_init(void) { - // Setup Backlight - SIM->SCGC6 |= SIM_SCGC6_FTM0; - FTM0->CNT = 0; // Reset counter - - // PWM Period - // 16-bit maximum - FTM0->MOD = 0xFFFF; - - // Set FTM to PWM output - Edge Aligned, Low-true pulses -#define CNSC_MODE FTM_SC_CPWMS | FTM_SC_PS(4) | FTM_SC_CLKS(0) - CHANNEL_RED.CnSC = CNSC_MODE; - CHANNEL_GREEN.CnSC = CNSC_MODE; - CHANNEL_BLUE.CnSC = CNSC_MODE; - - // System clock, /w prescalar setting - FTM0->SC = FTM_SC_CLKS(1) | FTM_SC_PS(PRESCALAR_DEFINE); - - CHANNEL_RED.CnV = 0; - CHANNEL_GREEN.CnV = 0; - CHANNEL_BLUE.CnV = 0; - - RGB_PORT_GPIO->PDDR |= (1 << RED_PIN); - RGB_PORT_GPIO->PDDR |= (1 << GREEN_PIN); - RGB_PORT_GPIO->PDDR |= (1 << BLUE_PIN); - -#define RGB_MODE PORTx_PCRn_SRE | PORTx_PCRn_DSE | PORTx_PCRn_MUX(4) - RGB_PORT->PCR[RED_PIN] = RGB_MODE; - RGB_PORT->PCR[GREEN_PIN] = RGB_MODE; - RGB_PORT->PCR[BLUE_PIN] = RGB_MODE; -} - -void lcd_backlight_hal_color(uint16_t r, uint16_t g, uint16_t b) { - CHANNEL_RED.CnV = r; - CHANNEL_GREEN.CnV = g; - CHANNEL_BLUE.CnV = b; -} - |