mhu/reflow-oven-control-sw
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Start onewire interface. But probably won't finish it

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This commit is contained in:
Mario Hüttel 2020-02-25 19:34:23 +01:00
parent 71e2073a76
commit 0ddaef01c8
11 changed files with 195 additions and 108 deletions
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2
stm-firmware/Makefile
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@ -49,7 +49,7 @@ CFILES += rotary-encoder.c
CFILES += stack-check.c
CFILES += onewire-if.c onewire-temp-sensors.c
CFILES += onewire-temp-sensors.c
DEFINES += -DDEBUGBUILD

34
stm-firmware/include/reflow-controller/onewire-if.h
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@ -1,34 +0,0 @@
/* Reflow Oven Controller
*
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware 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 the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ONEWIRE_IF_H__
#define __ONEWIRE_IF_H__
#include <stm-periph/uart.h>
int onewire_if_init_uart(struct stm_uart *uart, uint32_t brr_val, USART_TypeDef *onewire_uart, volatile uint32_t *rcc_reg, uint8_t rcc_bit_num);
void onewire_if_disable(struct stm_uart *uart);
int onewire_if_send_byte(struct stm_uart *uart);
int onewire_if_receive_byte(struct stm_uart *uart);
#endif /* __ONEWIRE_IF_H__ */

8
stm-firmware/include/reflow-controller/onewire-temp-sensors.h
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@ -32,6 +32,8 @@
#define ONEWIRE_UART_DEV USART3
enum onewire_temp_resolution {RES_8BIT, RES_12BIT};
void onewire_temp_sensors_setup_hw();
/**
@ -40,8 +42,10 @@ void onewire_temp_sensors_setup_hw();
* @param list_len
* @return Negative: error, >= 0: amount of discovered sensors
*/
int onewire_temp_sensors_discover(uint32_t *id_list, size_t list_len);
int onewire_temp_sensors_discover(uint64_t *id_list, size_t list_len);
float onewire_temp_sensor_read_temp(uint32_t id);
int onewire_temp_sensor_config(uint64_t id, enum onewire_temp_resolution resolution);
float onewire_temp_sensor_read_temp(uint64_t id);
#endif /* __ONEWIRE_TEMP_SENSORS_H__ */

1
stm-firmware/include/reflow-controller/systick.h
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@ -63,5 +63,6 @@ void systick_setup(void);
*/
void systick_wait_ms(uint32_t ms);
uint64_t systick_get_global_tick();
#endif /* __SYSTICK_H__ */

16
stm-firmware/include/stm-periph/dma-ring-buffer.h
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@ -96,6 +96,14 @@ int dma_ring_buffer_periph_to_mem_get_data(struct dma_ring_buffer_to_mem *buff,
*/
void dma_ring_buffer_periph_to_mem_stop(struct dma_ring_buffer_to_mem *buff);
/**
* @brief Get fill level of peripheral to memory DMA ring buffer
* @param buff Buffer
* @param fill_level fill level to write data to
* @return 0 if success
*/
int dma_ring_buffer_periph_to_mem_fill_level(struct dma_ring_buffer_to_mem *buff, size_t *fill_level);
/**
* @brief Initialize ring buffer to streaming data from meory to a peripheral
* @param[in,out] dma_buffer DMA ring buffer structure
@ -138,6 +146,14 @@ void dma_ring_buffer_mem_to_periph_int_callback(struct dma_ring_buffer_to_periph
*/
void dma_ring_buffer_mem_to_periph_stop(struct dma_ring_buffer_to_periph *buff);
/**
* @brief Get fill level of mem to periph DMA ring buffer
* @param buff Buffer
* @param fill_level fill level to write data to
* @return 0 if success
*/
int dma_ring_buffer_mem_to_periph_fill_level(struct dma_ring_buffer_to_periph *buff, size_t *fill_level);
/** @} */
#endif /* __DMA_RING_BUFFER_H__ */

3
stm-firmware/include/stm-periph/uart.h
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@ -70,5 +70,8 @@ int uart_check_rx_avail(struct stm_uart *uart);
void uart_tx_dma_complete_int_callback(struct stm_uart *uart);
size_t uart_dma_tx_queue_avail(struct stm_uart *uart);
size_t uart_dma_rx_queue_avail(struct stm_uart *uart);
#endif /* UART_UART_H_ */

56
stm-firmware/onewire-if.c
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@ -1,56 +0,0 @@
/* Reflow Oven Controller
*
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware 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 the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <reflow-controller/onewire-if.h>
int onewire_if_init_uart(struct stm_uart *uart, uint32_t brr_val, USART_TypeDef *onewire_uart, volatile uint32_t *rcc_reg, uint8_t rcc_bit_num)
{
if (!uart)
return -1000;
uart->rx = 1;
uart->tx = 1;
uart->brr_val = brr_val;
uart->rcc_reg = rcc_reg;
uart->uart_dev = onewire_uart;
uart->rcc_bit_no = rcc_bit_num;
uart->dma_rx_buff = NULL;
uart->dma_tx_buff = NULL;
return uart_init(uart);
}
void onewire_if_disable(struct stm_uart *uart)
{
if (!uart)
return;
uart_disable(uart);
}
int onewire_if_send_byte(struct stm_uart *uart)
{
}
int onewire_if_receive_byte(struct stm_uart *uart)
{
}

96
stm-firmware/onewire-temp-sensors.c
View File

@ -20,13 +20,20 @@
#include <stm32/stm32f4xx.h>
#include <stm-periph/uart.h>
#include <reflow-controller/onewire-if.h>
#include <reflow-controller/onewire-temp-sensors.h>
#include <stm-periph/clock-enable-manager.h>
#include <stm-periph/stm32-gpio-macros.h>
static struct stm_uart if_uart;
#define ONEWIRE_IF_RESET_BRR_VAL 0x1117UL
/* UART_DIV is 45.5625 => 115200 @ 84 MHz */
#define ONEWIRE_IF_COMM_DIV_FRACTION 9U /* Equals 9/16 = 0.5625 */
#define ONEWIRE_IF_COMM_DIV_MANTISSA 45U /* Equals 45 */
#define ONEWIRE_IF_COMM_BRR_VAL ((ONEWIRE_IF_COMM_DIV_MANTISSA<<4) | ONEWIRE_IF_COMM_DIV_FRACTION)
void onewire_temp_sensors_setup_hw()
{
rcc_manager_enable_clock(&RCC->AHB1ENR, BITMASK_TO_BITNO(ONEWIRE_TEMP_RCC_MASK));
@ -37,6 +44,91 @@ void onewire_temp_sensors_setup_hw()
SETAF(ONEWIRE_TEMP_PORT, ONEWIRE_TEMP_RX_PIN, ONEWIRE_TEMP_AF_NUM);
SETAF(ONEWIRE_TEMP_PORT, ONEWIRE_TEMP_TX_PIN, ONEWIRE_TEMP_AF_NUM);
(void)onewire_if_init_uart(&if_uart, 1, ONEWIRE_UART_DEV, &RCC->APB1ENR, BITMASK_TO_BITNO(RCC_APB1ENR_USART3EN));
if_uart.rx = 1;
if_uart.tx = 1;
if_uart.brr_val = ONEWIRE_IF_RESET_BRR_VAL;
if_uart.rcc_reg = &RCC->AHB1ENR;
if_uart.rcc_bit_no = BITMASK_TO_BITNO(ONEWIRE_TEMP_RCC_MASK);
if_uart.uart_dev = ONEWIRE_UART_DEV;
if_uart.dma_rx_buff = NULL;
if_uart.dma_tx_buff = NULL;
if_uart.base_dma_num = 1;
if_uart.dma_rx_stream = NULL;
if_uart.dma_tx_stream = NULL;
if_uart.rx_buff_count = 0ULL;
if_uart.tx_buff_count = 0ULL;
(void)uart_init(&if_uart);
}
static void onewire_send_bit(uint8_t bit)
{
uart_send_char(&if_uart, (bit ? 0xFF : 0x00));
(void)uart_get_char(&if_uart);
}
static uint8_t onewire_receive_bit()
{
unsigned char recv;
uart_send_char(&if_uart, 0xFF);
recv = (unsigned char)uart_get_char(&if_uart);
if (recv <= 0xFE)
return 0;
else
return 1;
}
static void onewire_send_byte(uint8_t byte)
{
int i;
for (i = 7; i >= 0; i--) {
onewire_send_bit(byte & 0x80);
byte <<= 1;
}
}
static uint8_t onewire_receive_byte()
{
uint8_t byte = 0;
int i;
for (i = 0; i < 8; i++) {
byte <<= 1;
byte |= (onewire_receive_bit() ? 0x01 : 0x0);
}
return byte;
}
static int onewire_temp_init_presence()
{
unsigned char recv;
uart_change_brr(&if_uart, ONEWIRE_IF_RESET_BRR_VAL);
uart_send_char(&if_uart, 0xF0);
recv = (unsigned char)uart_get_char(&if_uart);
uart_change_brr(&if_uart, ONEWIRE_IF_COMM_BRR_VAL);
if (recv >= 0x10 && recv <= 0x90)
return 1;
else
return 0;
}
int onewire_temp_sensors_discover(uint64_t *id_list, size_t list_len)
{
}
int onewire_temp_sensor_config(uint64_t id, enum onewire_temp_resolution resolution)
{
}
float onewire_temp_sensor_read_temp(uint64_t id)
{
}

49
stm-firmware/stm-periph/dma-ring-buffer.c
View File

@ -33,6 +33,19 @@
#include <stdbool.h>
#include <string.h>
static size_t calculate_ring_buffer_fill_level(size_t buffer_size, size_t get_idx, size_t put_idx)
{
size_t fill_level;
if (put_idx >= get_idx) {
fill_level = (put_idx - get_idx);
} else {
fill_level = buffer_size - get_idx + put_idx;
}
return fill_level;
}
static int dma_ring_buffer_switch_clock_enable(uint8_t base_dma, bool clk_en)
{
int ret_val;
@ -141,6 +154,19 @@ void dma_ring_buffer_periph_to_mem_stop(struct dma_ring_buffer_to_mem *buff)
memset(buff, 0, sizeof(struct dma_ring_buffer_to_mem));
}
int dma_ring_buffer_periph_to_mem_fill_level(struct dma_ring_buffer_to_mem *buff, size_t *fill_level)
{
size_t put_idx;
if (!buff || !fill_level)
return -1000;
put_idx = buff->buffer_count - buff->dma->NDTR;
*fill_level = calculate_ring_buffer_fill_level(buff->buffer_count, buff->get_idx, put_idx);
return 0;
}
int dma_ring_buffer_mem_to_periph_initialize(struct dma_ring_buffer_to_periph *dma_buffer, uint8_t base_dma_id, DMA_Stream_TypeDef *dma_stream, size_t buffer_element_count, size_t element_size, volatile void *data_buffer, uint8_t dma_trigger_channel, void *dest_reg)
{
if (!dma_buffer || !dma_stream || !data_buffer || !dest_reg)
@ -163,19 +189,6 @@ int dma_ring_buffer_mem_to_periph_initialize(struct dma_ring_buffer_to_periph *d
return 0;
}
static size_t calculate_ring_buffer_fill_level(size_t buffer_size, size_t get_idx, size_t put_idx)
{
size_t fill_level;
if (put_idx >= get_idx) {
fill_level = (put_idx - get_idx);
} else {
fill_level = buffer_size - get_idx + put_idx;
}
return fill_level;
}
static void queue_or_start_dma_transfer(struct dma_ring_buffer_to_periph *buff)
{
uint32_t dma_transfer_cnt;
@ -289,4 +302,14 @@ void dma_ring_buffer_mem_to_periph_stop(struct dma_ring_buffer_to_periph *buff)
memset(buff, 0, sizeof(struct dma_ring_buffer_to_periph));
}
int dma_ring_buffer_mem_to_periph_fill_level(struct dma_ring_buffer_to_periph *buff, size_t *fill_level)
{
if (!buff || !fill_level)
return -1000;
*fill_level = calculate_ring_buffer_fill_level(buff->buffer_count, buff->dma_get_idx_current, buff->sw_put_idx);
return 0;
}
/** @} */

33
stm-firmware/stm-periph/uart.c
View File

@ -162,6 +162,16 @@ int uart_receive_data_with_dma(struct stm_uart *uart, const char **data, size_t
return dma_ring_buffer_periph_to_mem_get_data(&uart->rx_ring_buff, (const volatile void **)data, len);
}
char uart_get_char(struct stm_uart *uart)
{
if (!uart)
return 0;
/* Wait for data to be available */
while (!(uart->uart_dev->SR & USART_SR_RXNE));
return (char)uart->uart_dev->DR;
}
int uart_check_rx_avail(struct stm_uart *uart)
{
if (!uart)
@ -181,3 +191,26 @@ void uart_tx_dma_complete_int_callback(struct stm_uart *uart)
dma_ring_buffer_mem_to_periph_int_callback(&uart->tx_ring_buff);
}
size_t uart_dma_tx_queue_avail(struct stm_uart *uart)
{
size_t fill_level = 0UL;
if (!uart)
return 0UL;
(void)dma_ring_buffer_mem_to_periph_fill_level(&uart->tx_ring_buff, &fill_level);
return fill_level;
}
size_t uart_dma_rx_queue_avail(struct stm_uart *uart)
{
size_t fill_level = 0UL;
if (!uart)
return 0UL;
(void)dma_ring_buffer_periph_to_mem_fill_level(&uart->rx_ring_buff, &fill_level);
return fill_level;
}

5
stm-firmware/systick.c
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@ -41,6 +41,11 @@ void systick_wait_ms(uint32_t ms)
while (wait_tick_ms < ms);
}
uint64_t systick_get_global_tick()
{
return global_tick_ms;
}
/**
* @brief Interrupt Handler for SysTick
*