diff options
Diffstat (limited to 'quantum/visualizer/example_integration/lcd_backlight_hal.c')
| -rw-r--r-- | quantum/visualizer/example_integration/lcd_backlight_hal.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/quantum/visualizer/example_integration/lcd_backlight_hal.c b/quantum/visualizer/example_integration/lcd_backlight_hal.c deleted file mode 100644 index 913131b16..000000000 --- a/quantum/visualizer/example_integration/lcd_backlight_hal.c +++ /dev/null | |||
| @@ -1,91 +0,0 @@ | |||
| 1 | /* | ||
| 2 | The MIT License (MIT) | ||
| 3 | |||
| 4 | Copyright (c) 2016 Fred Sundvik | ||
| 5 | |||
| 6 | Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| 7 | of this software and associated documentation files (the "Software"), to deal | ||
| 8 | in the Software without restriction, including without limitation the rights | ||
| 9 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| 10 | copies of the Software, and to permit persons to whom the Software is | ||
| 11 | furnished to do so, subject to the following conditions: | ||
| 12 | |||
| 13 | The above copyright notice and this permission notice shall be included in all | ||
| 14 | copies or substantial portions of the Software. | ||
| 15 | |||
| 16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| 17 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| 18 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| 19 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| 20 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| 21 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| 22 | SOFTWARE. | ||
| 23 | */ | ||
| 24 | |||
| 25 | #include "lcd_backlight.h" | ||
| 26 | #include "hal.h" | ||
| 27 | |||
| 28 | #define RED_PIN 1 | ||
| 29 | #define GREEN_PIN 2 | ||
| 30 | #define BLUE_PIN 3 | ||
| 31 | #define CHANNEL_RED FTM0->CHANNEL[0] | ||
| 32 | #define CHANNEL_GREEN FTM0->CHANNEL[1] | ||
| 33 | #define CHANNEL_BLUE FTM0->CHANNEL[2] | ||
| 34 | |||
| 35 | #define RGB_PORT PORTC | ||
| 36 | #define RGB_PORT_GPIO GPIOC | ||
| 37 | |||
| 38 | // Base FTM clock selection (72 MHz system clock) | ||
| 39 | // @ 0xFFFF period, 72 MHz / (0xFFFF * 2) = Actual period | ||
| 40 | // Higher pre-scalar will use the most power (also look the best) | ||
| 41 | // Pre-scalar calculations | ||
| 42 | // 0 - 72 MHz -> 549 Hz | ||
| 43 | // 1 - 36 MHz -> 275 Hz | ||
| 44 | // 2 - 18 MHz -> 137 Hz | ||
| 45 | // 3 - 9 MHz -> 69 Hz (Slightly visible flicker) | ||
| 46 | // 4 - 4 500 kHz -> 34 Hz (Visible flickering) | ||
| 47 | // 5 - 2 250 kHz -> 17 Hz | ||
| 48 | // 6 - 1 125 kHz -> 9 Hz | ||
| 49 | // 7 - 562 500 Hz -> 4 Hz | ||
| 50 | // Using a higher pre-scalar without flicker is possible but FTM0_MOD will need to be reduced | ||
| 51 | // Which will reduce the brightness range | ||
| 52 | #define PRESCALAR_DEFINE 0 | ||
| 53 | |||
| 54 | void lcd_backlight_hal_init(void) { | ||
| 55 | // Setup Backlight | ||
| 56 | SIM->SCGC6 |= SIM_SCGC6_FTM0; | ||
| 57 | FTM0->CNT = 0; // Reset counter | ||
| 58 | |||
| 59 | // PWM Period | ||
| 60 | // 16-bit maximum | ||
| 61 | FTM0->MOD = 0xFFFF; | ||
| 62 | |||
| 63 | // Set FTM to PWM output - Edge Aligned, Low-true pulses | ||
| 64 | #define CNSC_MODE FTM_SC_CPWMS | FTM_SC_PS(4) | FTM_SC_CLKS(0) | ||
| 65 | CHANNEL_RED.CnSC = CNSC_MODE; | ||
| 66 | CHANNEL_GREEN.CnSC = CNSC_MODE; | ||
| 67 | CHANNEL_BLUE.CnSC = CNSC_MODE; | ||
| 68 | |||
| 69 | // System clock, /w prescalar setting | ||
| 70 | FTM0->SC = FTM_SC_CLKS(1) | FTM_SC_PS(PRESCALAR_DEFINE); | ||
| 71 | |||
| 72 | CHANNEL_RED.CnV = 0; | ||
| 73 | CHANNEL_GREEN.CnV = 0; | ||
| 74 | CHANNEL_BLUE.CnV = 0; | ||
| 75 | |||
| 76 | RGB_PORT_GPIO->PDDR |= (1 << RED_PIN); | ||
| 77 | RGB_PORT_GPIO->PDDR |= (1 << GREEN_PIN); | ||
| 78 | RGB_PORT_GPIO->PDDR |= (1 << BLUE_PIN); | ||
| 79 | |||
| 80 | #define RGB_MODE PORTx_PCRn_SRE | PORTx_PCRn_DSE | PORTx_PCRn_MUX(4) | ||
| 81 | RGB_PORT->PCR[RED_PIN] = RGB_MODE; | ||
| 82 | RGB_PORT->PCR[GREEN_PIN] = RGB_MODE; | ||
| 83 | RGB_PORT->PCR[BLUE_PIN] = RGB_MODE; | ||
| 84 | } | ||
| 85 | |||
| 86 | void lcd_backlight_hal_color(uint16_t r, uint16_t g, uint16_t b) { | ||
| 87 | CHANNEL_RED.CnV = r; | ||
| 88 | CHANNEL_GREEN.CnV = g; | ||
| 89 | CHANNEL_BLUE.CnV = b; | ||
| 90 | } | ||
| 91 | |||
