nRF52840/52832在Keil启用RTT打印日志的配置指南

//==========================================================

// NRF_LOG_BACKEND_RTT_ENABLED - nrf_log_backend_rtt - Log RTT backend

//==========================================================

#ifndef NRF_LOG_BACKEND_RTT_ENABLED

#define NRF_LOG_BACKEND_RTT_ENABLED 1

#endif

// NRF_LOG_BACKEND_RTT_TEMP_BUFFER_SIZE - Size of buffer for partially processed strings.

// Size of the buffer is a trade-off between RAM usage and processing.

// if buffer is smaller then strings will often be fragmented.

// It is recommended to use size which will fit typical log and only the

// longer one will be fragmented.

#ifndef NRF_LOG_BACKEND_RTT_TEMP_BUFFER_SIZE

#define NRF_LOG_BACKEND_RTT_TEMP_BUFFER_SIZE 128

#endif

// NRF_LOG_BACKEND_RTT_TX_RETRY_DELAY_MS - Period before retrying writing to RTT

#ifndef NRF_LOG_BACKEND_RTT_TX_RETRY_DELAY_MS

#define NRF_LOG_BACKEND_RTT_TX_RETRY_DELAY_MS 1

#endif

// NRF_LOG_BACKEND_RTT_TX_RETRY_CNT - Writing to RTT retries.

// If RTT fails to accept any new data after retries

// module assumes that host is not active and on next

// request it will perform only one write attempt.

// On successful writing, module assumes that host is active

// and scheme with retry is applied again.

#ifndef NRF_LOG_BACKEND_RTT_TX_RETRY_CNT

#define NRF_LOG_BACKEND_RTT_TX_RETRY_CNT 3

#endif

//

// nRF_Segger_RTT

//==========================================================

// segger_rtt - SEGGER RTT

//==========================================================

// SEGGER_RTT_CONFIG_BUFFER_SIZE_UP - Size of upstream buffer.

// Note that either @ref NRF_LOG_BACKEND_RTT_OUTPUT_BUFFER_SIZE

// or this value is actually used. It depends on which one is bigger.

#ifndef SEGGER_RTT_CONFIG_BUFFER_SIZE_UP

#define SEGGER_RTT_CONFIG_BUFFER_SIZE_UP 14000

#endif

// SEGGER_RTT_CONFIG_MAX_NUM_UP_BUFFERS - Size of upstream buffer.

#ifndef SEGGER_RTT_CONFIG_MAX_NUM_UP_BUFFERS

#define SEGGER_RTT_CONFIG_MAX_NUM_UP_BUFFERS 2

#endif

// SEGGER_RTT_CONFIG_BUFFER_SIZE_DOWN - Size of upstream buffer.

#ifndef SEGGER_RTT_CONFIG_BUFFER_SIZE_DOWN

#define SEGGER_RTT_CONFIG_BUFFER_SIZE_DOWN 16

#endif

// SEGGER_RTT_CONFIG_MAX_NUM_DOWN_BUFFERS - Size of upstream buffer.

#ifndef SEGGER_RTT_CONFIG_MAX_NUM_DOWN_BUFFERS

#define SEGGER_RTT_CONFIG_MAX_NUM_DOWN_BUFFERS 2

#endif

// SEGGER_RTT_CONFIG_DEFAULT_MODE  - RTT behavior if the buffer is full.

// The following modes are supported:

// - SKIP  - Do not block, output nothing.

// - TRIM  - Do not block, output as much as fits.

// - BLOCK - Wait until there is space in the buffer.

// <0=> SKIP

// <1=> TRIM

// <2=> BLOCK_IF_FIFO_FULL

#ifndef SEGGER_RTT_CONFIG_DEFAULT_MODE

#define SEGGER_RTT_CONFIG_DEFAULT_MODE 0

#endif

//

//==========================================================

//

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