mirror of
https://github.com/EranMorkon/AMTS.git
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119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/*
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Manufacturing tests for the new cortex minimal system
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Copyright (C) 2018 Andreas Mieke
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "rgb.h"
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#include "main.h"
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// Define registers of the RGB LED driver
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typedef enum {
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RGB_SHUTDOWN = 0x00,
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RGB_MAXCUR,
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RGB_RED,
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RGB_GREEN,
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RGB_BLUE,
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RGB_UPLEND,
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RGB_DOWNLEND,
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RGB_DIMSTEP
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} RGB_T;
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void rgb_send_command(uint8_t data)
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{
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// Generate start condition and transmit address
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I2C_GenerateSTART(I2C1, ENABLE);
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while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
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I2C_Send7bitAddress(I2C1, RGB_ADDR, I2C_Direction_Transmitter);
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while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
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// Send data
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I2C_SendData(I2C1, data);
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while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
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// Generate stop condition
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I2C_GenerateSTOP(I2C1, ENABLE);
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return;
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}
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void init_rgb(void)
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{
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// Enable GPIOB anf I2C1 clocks
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
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// Create gpio struct and fill it with default values
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GPIO_InitTypeDef gpio;
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GPIO_StructInit(&gpio);
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// SET PB6 to alternate function push pull (SCL)
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gpio.GPIO_Mode = GPIO_Mode_AF_PP;
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gpio.GPIO_Pin = GPIO_Pin_6;
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GPIO_Init(GPIOB, &gpio);
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// Set PB7 to alternate function open drain (SDA)
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gpio.GPIO_Mode = GPIO_Mode_AF_OD;
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gpio.GPIO_Pin = GPIO_Pin_7;
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GPIO_Init(GPIOB, &gpio);
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// Init I2C1 to 400 kHz
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I2C_InitTypeDef i2c;
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I2C_StructInit(&i2c);
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i2c.I2C_ClockSpeed = 400000;
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I2C_Init(I2C1, &i2c);
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// Enable I2C1 driver
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I2C_Cmd(I2C1, ENABLE);
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// Set the max current the driver should allow
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// LED actually allows 40mA, but driver only handles around 30
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rgb_send_command(0x3F);
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return;
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}
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void run_rgb(void)
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{
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// Set random colors for 100 ms each
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rgb_send_command(0x5F);
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wait(100);
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rgb_send_command(0x7F);
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wait(100);
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rgb_send_command(0x9F);
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wait(100);
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rgb_send_command(0x50);
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wait(100);
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rgb_send_command(0x70);
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wait(100);
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rgb_send_command(0x90);
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wait(100);
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rgb_send_command(0x40);
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wait(100);
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rgb_send_command(0x60);
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wait(100);
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rgb_send_command(0x80);
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wait(100);
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return;
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}
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void deinit_rgb(void)
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{
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// Disable I2C1
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I2C_Cmd(I2C1, DISABLE);
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I2C_DeInit(I2C1);
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return;
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}
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