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chore(core): remove old RGB LED driver

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This commit is contained in:
tychovrahe 2024-11-14 12:09:44 +01:00 committed by TychoVrahe
parent bbf97c7141
commit 16e0cf39f1

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/*
* This file is part of the Trezor project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* 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 3 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/>.
*/
/*
* Implements driver for IN-PI15TAT5R5G5B 1515 RGB LED 4-Pin with Integrated IC
*
* The communication protocol prescribes encoding of 0 as a short pulse
* (200-400ns) and 1 as a long pulse (580ns-1us). Before sending the data reset
* period is required: at least 80us without pulses.
*
* The data send to LED is 24 bit RGB. These data are encoded as the long and
* short pulses.
*
* After data is sent, the PWM compare level is set to 0 to stop pulsing.
*
* For pulse generation with precise timing PWM implemented via TIM8 is used.
* To avoid any glitches when setting the CCR register, preloading is used,
* therefore sync with TIM4 is needed (to generate COM event on TIM update)
*
* DMA is used to set the CCR register to avoid need for interrupt after every
* bit is sent.
*/
#include <trezor_bsp.h>
#include <trezor_rtl.h>
#ifdef KERNEL_MODE
#define RESET_DATA_LEN 18 // >80us no pulse before sending data
#define DATA_LEN 25 // 24 RGB bits and a final zero
#define TIMER_PERIOD 832 // cca 200 KHz @ 180MHz
#define BIT_0_LEN 52 // 312ns
#define BIT_1_LEN 125 // 750ns
#if defined BOARDLOADER
#error Not implemented for boardloader!
#endif
#if defined BOOTLOADER
__attribute__((section(".buf")))
#endif
uint32_t rgb_led_data[RESET_DATA_LEN + DATA_LEN] = {0};
static void rgb_led_set(uint32_t* start, uint8_t color) {
for (int i = 0; i < 8; i++) {
uint32_t bit_mask = (1 << (7 - i));
if (color & bit_mask) {
start[i] = BIT_1_LEN;
} else {
start[i] = BIT_0_LEN;
}
}
}
void rgb_led_set_color(uint32_t color) {
uint16_t red = (0xFF0000 & color) >> 16;
uint16_t green = (0xFF00 & color) >> 8;
uint16_t blue = (0xFF & color);
// wait for previous command to finish
while (DMA2_Stream1->CR & DMA_SxCR_EN)
;
rgb_led_set(&rgb_led_data[RESET_DATA_LEN + 0], green);
rgb_led_set(&rgb_led_data[RESET_DATA_LEN + 8], red);
rgb_led_set(&rgb_led_data[RESET_DATA_LEN + 16], blue);
rgb_led_data[RESET_DATA_LEN + DATA_LEN - 1] = 0;
DMA2->LIFCR |= 0xFC0;
DMA2_Stream1->M0AR = (uint32_t)rgb_led_data;
DMA2_Stream1->PAR = (uint32_t)&TIM8->CCR1;
DMA2_Stream1->NDTR = RESET_DATA_LEN + DATA_LEN;
DMA2_Stream1->CR |= DMA_SxCR_EN;
}
void rgb_led_init(void) {
__HAL_RCC_GPIOC_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStructure = {0};
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_PULLUP;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStructure.Alternate = GPIO_AF3_TIM8;
GPIO_InitStructure.Pin = GPIO_PIN_6;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
__HAL_RCC_TIM4_CLK_ENABLE();
TIM_HandleTypeDef TIM4_Handle = {0};
TIM4_Handle.State = HAL_TIM_STATE_RESET;
TIM4_Handle.Instance = TIM4;
TIM4_Handle.Init.Period = TIMER_PERIOD;
TIM4_Handle.Init.Prescaler = 0;
TIM4_Handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
TIM4_Handle.Init.CounterMode = TIM_COUNTERMODE_UP;
TIM4_Handle.Init.RepetitionCounter = 0;
HAL_TIM_PWM_Init(&TIM4_Handle);
__HAL_RCC_TIM8_CLK_ENABLE();
TIM_HandleTypeDef TIM8_Handle = {0};
TIM8_Handle.State = HAL_TIM_STATE_RESET;
TIM8_Handle.Instance = TIM8;
TIM8_Handle.Init.Period = TIMER_PERIOD;
TIM8_Handle.Init.Prescaler = 0;
TIM8_Handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
TIM8_Handle.Init.CounterMode = TIM_COUNTERMODE_UP;
TIM8_Handle.Init.RepetitionCounter = 0;
HAL_TIM_PWM_Init(&TIM8_Handle);
TIM_OC_InitTypeDef TIM_OC_InitStructure = {0};
TIM_OC_InitStructure.Pulse = 0;
TIM_OC_InitStructure.OCMode = TIM_OCMODE_PWM1;
TIM_OC_InitStructure.OCPolarity = TIM_OCPOLARITY_LOW;
TIM_OC_InitStructure.OCFastMode = TIM_OCFAST_DISABLE;
TIM_OC_InitStructure.OCNPolarity = TIM_OCNPOLARITY_HIGH;
TIM_OC_InitStructure.OCIdleState = TIM_OCIDLESTATE_SET;
TIM_OC_InitStructure.OCNIdleState = TIM_OCNIDLESTATE_SET;
HAL_TIM_PWM_ConfigChannel(&TIM8_Handle, &TIM_OC_InitStructure, TIM_CHANNEL_1);
__HAL_RCC_DMA2_CLK_ENABLE();
DMA_HandleTypeDef DMA_InitStructure = {0};
DMA_InitStructure.Instance = DMA2_Stream1;
DMA_InitStructure.State = HAL_DMA_STATE_RESET;
DMA_InitStructure.Init.Channel = DMA_CHANNEL_7;
DMA_InitStructure.Init.Direction = DMA_MEMORY_TO_PERIPH;
DMA_InitStructure.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
DMA_InitStructure.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_1QUARTERFULL;
DMA_InitStructure.Init.MemBurst = DMA_MBURST_SINGLE;
DMA_InitStructure.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
DMA_InitStructure.Init.MemInc = DMA_MINC_ENABLE;
DMA_InitStructure.Init.Mode = DMA_NORMAL;
DMA_InitStructure.Init.PeriphBurst = DMA_PBURST_SINGLE;
DMA_InitStructure.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
DMA_InitStructure.Init.PeriphInc = DMA_PINC_DISABLE;
DMA_InitStructure.Init.Priority = DMA_PRIORITY_HIGH;
HAL_DMA_Init(&DMA_InitStructure);
TIM4->CR2 |= TIM_CR2_MMS_1; // update event as TRGO
TIM8->CR2 |= TIM_CR2_CCPC; // preloading CCR register
TIM8->CR2 |= TIM_CR2_CCUS; // preload when TRGI
TIM8->SMCR |= TIM_SMCR_SMS_2; // reset mode - sync timers
TIM8->SMCR |= TIM_SMCR_TS_1; // sync with TIM 4
TIM8->DIER |= TIM_DMA_UPDATE; // allow DMA request from update event
TIM8->CCR1 = 0;
// NVIC configuration for SDIO interrupts
HAL_TIM_Base_Start(&TIM4_Handle);
HAL_TIM_Base_Start(&TIM8_Handle);
HAL_TIM_PWM_Start(&TIM8_Handle, TIM_CHANNEL_1);
// turns off the LED
rgb_led_set_color(0x000000);
}
#endif // KERNEL_MODE