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add copy of TSYS

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Edward Emelianov
2023-08-29 20:44:40 +03:00
parent e07260c9d0
commit 16dcbd52d9
37 changed files with 4775 additions and 0 deletions
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F0:F030,F042,F072/TSYS_controller/hardware.c Normal file
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/*
* geany_encoding=koi8-r
* hardware.c - hardware-dependent macros & functions
*
* Copyright 2018 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
#include "hardware.h"
I2C_SPEED curI2Cspeed = LOW_SPEED;
void gpio_setup(void){
// here we turn on clocking for all periph.
RCC->AHBENR |= RCC_AHBENR_GPIOBEN | RCC_AHBENR_GPIOAEN | RCC_AHBENR_DMAEN;
// Set LEDS (PB10/11) & multiplexer as output (PB0..2,12)
GPIOB->MODER = (GPIOB->MODER & ~(GPIO_MODER_MODER10 | GPIO_MODER_MODER11 |
GPIO_MODER_MODER0 | GPIO_MODER_MODER1 |
GPIO_MODER_MODER2 | GPIO_MODER_MODER12 )
) |
GPIO_MODER_MODER10_O | GPIO_MODER_MODER11_O |
GPIO_MODER_MODER0_O | GPIO_MODER_MODER1_O |
GPIO_MODER_MODER2_O | GPIO_MODER_MODER12_O;
// multiplexer outputs are push-pull, GPIOB->OTYPER = 0
MUL_OFF();
// PA8 - power enable
GPIOA->MODER = (GPIOA->MODER & ~(GPIO_MODER_MODER8)) |
GPIO_MODER_MODER8_O;
// PA13..15 (low bits) + PB15 (high bit) - CAN address, pullup inputs
GPIOA->PUPDR = (GPIOA->PUPDR & ~(GPIO_PUPDR_PUPDR13 | GPIO_PUPDR_PUPDR14 |
GPIO_PUPDR_PUPDR15)
) |
GPIO_PUPDR_PUPDR13_0 | GPIO_PUPDR_PUPDR14_0 |
GPIO_PUPDR_PUPDR15_0;
GPIOB->PUPDR = (GPIOB->PUPDR & ~(GPIO_PUPDR_PUPDR15)) |
GPIO_PUPDR_PUPDR15_0;
pin_set(LED0_port, LED0_pin); // clear LEDs
pin_set(LED1_port, LED1_pin);
}
void i2c_setup(I2C_SPEED speed){
if(speed == CURRENT_SPEED){
speed = curI2Cspeed;
}else{
curI2Cspeed = speed;
}
I2C1->CR1 = 0;
#if I2CPINS == 910
/*
* GPIO Resources: I2C1_SCL - PA9, I2C1_SDA - PA10
* GPIOA->AFR[1]
*/
GPIOA->AFR[1] &= ~0xff0; // alternate function F4 for PA9/PA10
GPIOA->AFR[1] |= 0x440;
GPIOA->MODER &= ~(GPIO_MODER_MODER9 | GPIO_MODER_MODER10);
GPIOA->MODER |= GPIO_MODER_MODER9_AF | GPIO_MODER_MODER10_AF; // alternate function
GPIOA->OTYPER |= GPIO_OTYPER_OT_9 | GPIO_OTYPER_OT_10; // opendrain
//GPIOA->OTYPER |= GPIO_OTYPER_OT_10; // opendrain
#elif I2CPINS == 67
/*
* GPIO Resources: I2C1_SCL - PB6, I2C1_SDA - PB7 (AF1)
* GPIOB->AFR[0] -> 1<<6*4 | 1<<7*4 = 0x11000000
*/
GPIOB->AFR[0] = (GPIOB->AFR[0] & ~0xff000000) | 0x11000000;
GPIOB->MODER = (GPIOB->MODER & ~(GPIO_MODER_MODER6 | GPIO_MODER_MODER7)) |
GPIO_MODER_MODER6_AF | GPIO_MODER_MODER7_AF;
GPIOB->OTYPER |= GPIO_OTYPER_OT_6 | GPIO_OTYPER_OT_7;
#else // undefined
#error "Not implemented"
#endif
// I2C
RCC->APB1ENR |= RCC_APB1ENR_I2C1EN; // timing
RCC->CFGR3 |= RCC_CFGR3_I2C1SW; // use sysclock for timing
if(speed == LOW_SPEED){ // 10kHz
// PRESC=B, SCLDEL=4, SDADEL=2, SCLH=0xC3, SCLL=0xB0
I2C1->TIMINGR = (0xB<<28) | (4<<20) | (2<<16) | (0xC3<<8) | (0xB0);
}else if(speed == HIGH_SPEED){ // 100kHz
I2C1->TIMINGR = (0xB<<28) | (4<<20) | (2<<16) | (0x12<<8) | (0x11);
}else{ // VERYLOW_SPEED - the lowest speed by STM register: 5.8kHz (presc = 16-1 = 15; )
I2C1->TIMINGR = (0xf<<28) | (4<<20) | (2<<16) | (0xff<<8) | (0xff);
}
I2C1->CR1 = I2C_CR1_PE;// | I2C_CR1_RXIE; // Enable I2C & (interrupt on receive - not supported yet)
}