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Update description and debug serial usage

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This commit is contained in:
Henrik Stickann 2022-04-12 16:08:00 +02:00
parent b50cf07ce9
commit 9f2c73c9ab
2 changed files with 13 additions and 15 deletions
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16
include/sta/hal/uart.hpp
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@ -1,10 +1,10 @@
/**
* @brief Implementation for UART using HAL.
* @brief Implementation of UART using HAL.
*
* Define STA_HAL_UART_ENABLE in <sta/config.hpp> to enable.
* Define **STA_HAL_UART_ENABLE** in `<sta/config.hpp>` to enable module.
*
* To enable the global DebugSerial instance (example using UART1) define:
* #define STA_HAL_UART_DEBUG huart1
* To use a HAL UART instance (e.g. UART1) for `<sta/debug_serial.hpp>` define:
* #define STA_HAL_UART_DEBUG_SERIAL huart1
*/
#ifndef STA_HAL_UART_HPP
#define STA_HAL_UART_HPP
@ -37,14 +37,6 @@ namespace sta
private:
UART_HandleTypeDef * handle_; /**< UART handle */
};
#ifdef STA_HAL_UART_DEBUG
/**
* @brief Global UART instance for debug output.
*/
extern HalUART DebugSerial;
#endif // STA_HAL_UART_DEBUG
} // namespace sta

12
src/hal/uart.cpp
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@ -17,16 +17,22 @@ namespace sta
} // namespace sta
#ifdef STA_HAL_UART_DEBUG
#ifdef STA_HAL_UART_DEBUG_SERIAL
// Get extern declaration for DebugSerial because const namespace level variables have internal linkage by default
#include <sta/debug_serial.hpp>
#include <usart.h>
namespace sta
{
HalUART DebugSerial(&STA_HAL_UART_DEBUG);
HalUART gHalDebugSerial(&STA_HAL_UART_DEBUG_SERIAL);
// Used by <sta/debug.hpp>
UART * const DebugSerial = &gHalDebugSerial;
} // namespace sta
#endif // STA_HAL_UART_DEBUG
#endif // STA_HAL_UART_DEBUG_SERIAL
#endif // STA_HAL_UART_ENABLE