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bldc/hwconf/hw_45.c

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/*
Copyright 2012-2014 Benjamin Vedder benjamin@vedder.se
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/>.
*/
/*
* hw_45.c
*
* Created on: 19 okt 2014
* Author: benjamin
*/
#include "hw.h"
#include "ch.h"
#include "hal.h"
#include "stm32f4xx_conf.h"
#include "commands.h"
// Threads
THD_FUNCTION(temp_thread, arg);
static THD_WORKING_AREA(temp_thread_wa, 512);
static bool temp_thread_running = false;
// Variables
static volatile bool i2c_running = false;
static volatile float temp_now = 30.0;
// 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_13, 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_11, 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(ADC2, ADC_Channel_5, 1, ADC_SampleTime_15Cycles);
ADC_InjectedChannelConfig(ADC1, ADC_Channel_5, 2, ADC_SampleTime_15Cycles);
ADC_InjectedChannelConfig(ADC2, ADC_Channel_6, 2, ADC_SampleTime_15Cycles);
// Setup i2c temperature sensor here
if (!temp_thread_running) {
chThdCreateStatic(temp_thread_wa, sizeof(temp_thread_wa), NORMALPRIO, temp_thread, NULL);
temp_thread_running = true;
}
}
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);
}
}
THD_FUNCTION(temp_thread, arg) {
(void)arg;
chRegSetThreadName("I2C Temp samp");
uint8_t rxbuf[10];
uint8_t txbuf[10];
msg_t status = MSG_OK;
systime_t tmo = MS2ST(5);
i2caddr_t temp_addr = 0x48;
hw_start_i2c();
chThdSleepMilliseconds(10);
for(;;) {
if (i2c_running) {
txbuf[0] = 0x00;
i2cAcquireBus(&HW_I2C_DEV);
status = i2cMasterTransmitTimeout(&HW_I2C_DEV, temp_addr, txbuf, 1, rxbuf, 2, tmo);
i2cReleaseBus(&HW_I2C_DEV);
if (status == MSG_OK){
int16_t tempi = rxbuf[0] << 8 | rxbuf[1];
float temp = (float)tempi;
temp /= 128;
temp_now = temp;
} else {
hw_try_restore_i2c();
}
}
chThdSleepMilliseconds(100);
}
}
float hw45_get_temp(void) {
return temp_now;
}
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