3 <signal handler called>() 0xfffffffd2 vPortStartFirstTask() port.c:153 0x000170e21 xPortStartScheduler() port.c:182 0x00017132 I should just ignore that stack frame if you are in an exception you need to unwind the stack in code to see what it really is. Quote: cmp r3, #0 ...
/*callback function for ARM_ETH_MAC_SignalEvent_t*/ void ethernet_mac_notify (uint32_t event) { switch (event) { case ARM_ETH_MAC_EVENT_RX_FRAME: /*received frame,call receive fuction*/ //led1_toggle(); xTaskNotifyGive( receiveHandler ); break; case ARM_ETH_MAC_EVENT_TX_FRAME:...
一、收发主要逻辑 1、接收:利用DMA和空闲中断一次接收一帧的不定长数据,接收到数据后“暂停”(之后分析为何要暂停而不是停止)DMA,快速利用结构体存储接收到数据的地址和长度,再利用队列能够传递结构体的特点,将所收数据的地址和长度入队,然后打开DMA接收。数据处理任务检测队列状态,只要队列中有有效数据就开始数据处理。
可以通过SysTick(滴答定时器)或 (TIMx)定时器 的方式来维护SYS Timebase Source,也就是HAL库中的uwTick,这是HAL库中维护的一个全局变量。在裸机运行的情况下,我们一般选择默认的SysTick(滴答定时器) 方式即可,也就是直接放在SysTick_Handler()中断服务函数中来维护。 带OS运行: 前面提到的SYS Timebase Source...
vPrintString("Handler task - Processing event.\r\n"); ulEventsToProcess--; } }else{/*If this part of the function is reached then an interrupt did not arrive within the expected time, and (in a real application) it may be necessary to perform some error recovery operations.*/} ...
The BT event handler is used to go on transmitting until the ring buffer is empty, including cong handling, and to put data received via BT into the buffer for the UART-TX task. The UART-RX task blocks on reading from the UART, the UART-TX task blocks on reading from its ring ...
第8~9行,将mtvec的值设置为freertos_risc_v_trap_handler()函数的地址,即中断(异常)入口函数为freertos_risc_v_trap_handler()。 后面的代码会将当前TCB里保存的寄存器值恢复到对应的寄存器,当xPortStartFirstTask()函数返回后就会执行当前(pxCurrentTCB所指的)任务。
My understanding is that key_create is called once in a thread function and it creates a single key. Then each thread running that function can store and load their specific data to that key. So, the key is a container of threads' data associated with the thread handler. In my code, ...
NMI_Handler: BusFault_Handler and on the stack is USART_TxDoubleExt which is a library call I use to reasd USART0. I am not sure why caling this routine causes the issue so I single stepped through my code and the BusFault_Handler is called when the code is returning from USART_Tx...
or when running a self-test on the CPU Compare Module. Instead, the nERROR signal needs to be monitored by a smart logic which can respond to the nERROR signal being driven low once the application has indicated that it is now done with all the self-tests that use the nERROR signal....