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fixup! drivers/modbus: add initial support

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This commit is contained in:
Bas Stottelaar 2024-03-20 22:16:03 +01:00
parent b8a4dfc317
commit e78601660b
1 changed files with 19 additions and 68 deletions
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87
drivers/include/modbus_rtu.h
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@ -23,9 +23,10 @@
#ifndef MODBUS_RTU_H
#define MODBUS_RTU_H
#include "mutex.h"
#include "periph/gpio.h"
#include "periph/uart.h"
#include "thread.h"
#include "mutex.h"
#include "modbus.h"
@ -39,85 +40,35 @@ extern "C" {
* @{
*/
#define MODBUS_RTU_PACKET_CRC_SIZE 2
#define MODBUS_RTU_PACKET_REQUEST_SIZE_MIN 8 /**< includes CRC */
#define MODBUS_RTU_PACKET_RESPONSE_SIZE_MIN 5 /**< includes CRC */
#define MODBUS_RTU_PACKET_SIZE_MAX 256 /**< includes CRC */
#define MODBUS_RTU_PACKET_REQUEST_SIZE_MIN 8 /* includes CRC */
#define MODBUS_RTU_PACKET_RESPONSE_SIZE_MIN 5 /* includes CRC */
#define MODBUS_RTU_PACKET_SIZE_MAX 256 /* includes CRC */
/** @} */
/**
* @brief Modbus RTU device parameters
*/
typedef struct {
/**
* @brief RTS pin. @p GPIO_UNDEF if not used.
*/
gpio_t pin_rts;
/**
* @brief RTS state when transmitting.
*/
int pin_rts_enable;
/**
* @brief UART device to use.
*/
uart_t uart;
/**
* @brief UART baudrate.
*/
uint32_t baudrate;
gpio_t pin_rts; /**< RTS pin, @p GPIO_UNDEF if not used */
int pin_rts_enable; /**< RTS pin state when transmitting */
uart_t uart; /**< UART device */
uint32_t baudrate; /**< UART Baudrate */
} modbus_rtu_params_t;
/**
* @brief Modbus RTU device structure
*/
typedef struct {
/**
* @brief @ref modbus_t base class
*/
modbus_t dev;
/**
* @brief Device parameters.
*/
const modbus_rtu_params_t* params;
/**
* @brief Amount of time (usec) to wait for a slave to begin sending a
* response.
*/
uint32_t timeout;
/**
* @brief Timeout between bytes.
* @internal
*/
uint32_t rx_timeout;
/**
* @brief PID of the thread that currently waits for bytes.
* @internal
*/
kernel_pid_t pid;
/**
* @brief Buffer for requests and responses.
* @internal
*/
uint8_t buffer[MODBUS_RTU_PACKET_SIZE_MAX];
/**
* @brief Current size of @p buffer in bytes.
* @internal
*/
uint8_t buffer_size;
/**
* @brief Mutex for interacting with @p buffer.
* @internal
*/
mutex_t buffer_mutex;
modbus_t dev; /**< @ref modbus_t base class */
const modbus_rtu_params_t* params; /**< device parameters */
uint32_t timeout; /**< amount of time (usec) to wait for a slave to
begin sending a */
uint32_t rx_timeout; /**< time between two bytes before timeing out */
kernel_pid_t pid; /**< PID of the thread that waits for bytes */
uint8_t buffer[MODBUS_RTU_PACKET_SIZE_MAX]; /**< buffer for requests
and responses */
uint8_t buffer_size; /**< current size of @p buffer, in bytes */
mutex_t buffer_mutex; /**< mutex for interacting with @p buffer */
} modbus_rtu_t;
/**