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hw_48.c
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/*
Copyright 2015 Benjamin Vedder [email protected]
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/>.
*/
#include "hw.h"
#include "ch.h"
#include "hal.h"
// Variables
static volatile bool i2c_running = false;
// I2C configuration
static const I2CConfig i2cfg = {
OPMODE_I2C,
100000,
STD_DUTY_CYCLE
};
void hw_init_gpio(void) {
// GPIO clock enable
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
// LEDs
palSetPadMode(GPIOC, 4,
PAL_MODE_OUTPUT_PUSHPULL |
PAL_STM32_OSPEED_HIGHEST);
palSetPadMode(GPIOA, 7,
PAL_MODE_OUTPUT_PUSHPULL |
PAL_STM32_OSPEED_HIGHEST);
// GPIOC (ENABLE_GATE)
palSetPadMode(GPIOC, 10,
PAL_MODE_OUTPUT_PUSHPULL |
PAL_STM32_OSPEED_HIGHEST);
DISABLE_GATE();
// GPIOB (DCCAL)
palSetPadMode(GPIOB, 12,
PAL_MODE_OUTPUT_PUSHPULL |
PAL_STM32_OSPEED_HIGHEST);
// GPIOA Configuration: Channel 1 to 3 as alternate function push-pull
palSetPadMode(GPIOA, 8, PAL_MODE_ALTERNATE(GPIO_AF_TIM1) |
PAL_STM32_OSPEED_HIGHEST |
PAL_STM32_PUDR_FLOATING);
palSetPadMode(GPIOA, 9, PAL_MODE_ALTERNATE(GPIO_AF_TIM1) |
PAL_STM32_OSPEED_HIGHEST |
PAL_STM32_PUDR_FLOATING);
palSetPadMode(GPIOA, 10, PAL_MODE_ALTERNATE(GPIO_AF_TIM1) |
PAL_STM32_OSPEED_HIGHEST |
PAL_STM32_PUDR_FLOATING);
palSetPadMode(GPIOB, 13, PAL_MODE_ALTERNATE(GPIO_AF_TIM1) |
PAL_STM32_OSPEED_HIGHEST |
PAL_STM32_PUDR_FLOATING);
palSetPadMode(GPIOB, 14, PAL_MODE_ALTERNATE(GPIO_AF_TIM1) |
PAL_STM32_OSPEED_HIGHEST |
PAL_STM32_PUDR_FLOATING);
palSetPadMode(GPIOB, 15, PAL_MODE_ALTERNATE(GPIO_AF_TIM1) |
PAL_STM32_OSPEED_HIGHEST |
PAL_STM32_PUDR_FLOATING);
// Hall sensors
palSetPadMode(HW_HALL_ENC_GPIO1, HW_HALL_ENC_PIN1, PAL_MODE_INPUT_PULLUP);
palSetPadMode(HW_HALL_ENC_GPIO2, HW_HALL_ENC_PIN2, PAL_MODE_INPUT_PULLUP);
palSetPadMode(HW_HALL_ENC_GPIO3, HW_HALL_ENC_PIN3, PAL_MODE_INPUT_PULLUP);
// Fault pin
palSetPadMode(GPIOC, 12, PAL_MODE_INPUT_PULLUP);
// ADC Pins
palSetPadMode(GPIOA, 0, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 6, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOB, 0, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOB, 1, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 0, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 1, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 2, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 3, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOC, 5, PAL_MODE_INPUT_ANALOG);
}
void hw_setup_adc_channels(void) {
// ADC1 regular channels
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 2, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_Vrefint, 3, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 4, ADC_SampleTime_15Cycles);
// ADC2 regular channels
ADC_RegularChannelConfig(ADC2, ADC_Channel_1, 1, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_6, 2, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_9, 3, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC2, ADC_Channel_15, 4, ADC_SampleTime_15Cycles);
// ADC3 regular channels
ADC_RegularChannelConfig(ADC3, ADC_Channel_2, 1, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC3, ADC_Channel_3, 2, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC3, ADC_Channel_12, 3, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADC3, ADC_Channel_10, 4, ADC_SampleTime_15Cycles);
// Injected channels
ADC_InjectedChannelConfig(ADC1, ADC_Channel_6, 1, ADC_SampleTime_15Cycles);
ADC_InjectedChannelConfig(ADC1, ADC_Channel_5, 2, ADC_SampleTime_15Cycles);
ADC_InjectedChannelConfig(ADC2, ADC_Channel_5, 1, ADC_SampleTime_15Cycles);
ADC_InjectedChannelConfig(ADC2, ADC_Channel_6, 2, ADC_SampleTime_15Cycles);
}
void hw_start_i2c(void) {
i2cAcquireBus(&HW_I2C_DEV);
if (!i2c_running) {
palSetPadMode(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN,
PAL_MODE_ALTERNATE(HW_I2C_GPIO_AF) |
PAL_STM32_OTYPE_OPENDRAIN |
PAL_STM32_OSPEED_MID1 |
PAL_STM32_PUDR_PULLUP);
palSetPadMode(HW_I2C_SDA_PORT, HW_I2C_SDA_PIN,
PAL_MODE_ALTERNATE(HW_I2C_GPIO_AF) |
PAL_STM32_OTYPE_OPENDRAIN |
PAL_STM32_OSPEED_MID1 |
PAL_STM32_PUDR_PULLUP);
i2cStart(&HW_I2C_DEV, &i2cfg);
i2c_running = true;
}
i2cReleaseBus(&HW_I2C_DEV);
}
void hw_stop_i2c(void) {
i2cAcquireBus(&HW_I2C_DEV);
if (i2c_running) {
palSetPadMode(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN, PAL_MODE_INPUT);
palSetPadMode(HW_I2C_SDA_PORT, HW_I2C_SDA_PIN, PAL_MODE_INPUT);
i2cStop(&HW_I2C_DEV);
i2c_running = false;
}
i2cReleaseBus(&HW_I2C_DEV);
}
/**
* Try to restore the i2c bus
*/
void hw_try_restore_i2c(void) {
if (i2c_running) {
i2cAcquireBus(&HW_I2C_DEV);
palSetPadMode(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN,
PAL_STM32_OTYPE_OPENDRAIN |
PAL_STM32_OSPEED_MID1 |
PAL_STM32_PUDR_PULLUP);
palSetPadMode(HW_I2C_SDA_PORT, HW_I2C_SDA_PIN,
PAL_STM32_OTYPE_OPENDRAIN |
PAL_STM32_OSPEED_MID1 |
PAL_STM32_PUDR_PULLUP);
palSetPad(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN);
palSetPad(HW_I2C_SDA_PORT, HW_I2C_SDA_PIN);
chThdSleep(1);
for(int i = 0;i < 16;i++) {
palClearPad(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN);
chThdSleep(1);
palSetPad(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN);
chThdSleep(1);
}
// Generate start then stop condition
palClearPad(HW_I2C_SDA_PORT, HW_I2C_SDA_PIN);
chThdSleep(1);
palClearPad(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN);
chThdSleep(1);
palSetPad(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN);
chThdSleep(1);
palSetPad(HW_I2C_SDA_PORT, HW_I2C_SDA_PIN);
palSetPadMode(HW_I2C_SCL_PORT, HW_I2C_SCL_PIN,
PAL_MODE_ALTERNATE(HW_I2C_GPIO_AF) |
PAL_STM32_OTYPE_OPENDRAIN |
PAL_STM32_OSPEED_MID1 |
PAL_STM32_PUDR_PULLUP);
palSetPadMode(HW_I2C_SDA_PORT, HW_I2C_SDA_PIN,
PAL_MODE_ALTERNATE(HW_I2C_GPIO_AF) |
PAL_STM32_OTYPE_OPENDRAIN |
PAL_STM32_OSPEED_MID1 |
PAL_STM32_PUDR_PULLUP);
HW_I2C_DEV.state = I2C_STOP;
i2cStart(&HW_I2C_DEV, &i2cfg);
i2cReleaseBus(&HW_I2C_DEV);
}
}