66577a9d23
Add support for a "named event" trace. This trace is intentionally not used by the system. The purpose of this trace is to allow driver or application developers to quickly add tracing for events for debug purposes, and to provide an example of how tracing subsystems can be extended with additional trace identifiers. Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/kernel_structs.h>
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#include <zephyr/init.h>
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#include <ksched.h>
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#include <SEGGER_SYSVIEW.h>
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#define NAMED_EVENT_MAXSTR 20 /* Maximum string length supported by named event */
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static uint32_t interrupt;
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uint32_t sysview_get_timestamp(void)
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{
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return k_cycle_get_32();
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}
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uint32_t sysview_get_interrupt(void)
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{
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#ifdef CONFIG_CPU_CORTEX_M
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interrupt = ((SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk) >>
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SCB_ICSR_VECTACTIVE_Pos);
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#endif
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return interrupt;
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}
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void sys_trace_k_thread_switched_in(void)
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{
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struct k_thread *thread;
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thread = k_current_get();
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if (z_is_idle_thread_object(thread)) {
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SEGGER_SYSVIEW_OnIdle();
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} else {
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SEGGER_SYSVIEW_OnTaskStartExec((uint32_t)(uintptr_t)thread);
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}
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}
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void sys_trace_k_thread_switched_out(void)
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{
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SEGGER_SYSVIEW_OnTaskStopExec();
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}
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void sys_trace_isr_enter(void)
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{
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SEGGER_SYSVIEW_RecordEnterISR();
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}
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void sys_trace_isr_exit(void)
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{
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SEGGER_SYSVIEW_RecordExitISR();
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}
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void sys_trace_isr_exit_to_scheduler(void)
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{
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SEGGER_SYSVIEW_RecordExitISRToScheduler();
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}
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void sys_trace_idle(void)
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{
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SEGGER_SYSVIEW_OnIdle();
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}
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void sys_trace_named_event(const char *name, uint32_t arg0, uint32_t arg1)
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{
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/* Based on SEGGER provided code for user defined packets */
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uint8_t a_packet[SEGGER_SYSVIEW_INFO_SIZE + 2 *
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SEGGER_SYSVIEW_QUANTA_U32 + NAMED_EVENT_MAXSTR + 1];
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uint8_t *payload;
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payload = SEGGER_SYSVIEW_PREPARE_PACKET(a_packet);
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payload = SEGGER_SYSVIEW_EncodeString(payload, name, NAMED_EVENT_MAXSTR);
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payload = SEGGER_SYSVIEW_EncodeU32(payload, arg0);
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payload = SEGGER_SYSVIEW_EncodeU32(payload, arg1);
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SEGGER_SYSVIEW_SendPacket(a_packet, payload, TID_NAMED_EVENT);
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}
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static int sysview_init(void)
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{
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SEGGER_SYSVIEW_Conf();
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if (IS_ENABLED(CONFIG_SEGGER_SYSTEMVIEW_BOOT_ENABLE)) {
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SEGGER_SYSVIEW_Start();
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}
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return 0;
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}
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SYS_INIT(sysview_init, POST_KERNEL, 0);
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