我用测试C28核和CLA并行处理时(进行同样的代码)，发现软件采用CLA_forceTasks(CLA1_BASE,CLA_TASKFLAG_1)启动TASK1时，并没有立即进入CLA_tas(),延时了1us才进入task。
__interrupt void Cla1Task1 ( void )
{
//
//Local Variables
//
// num = 0;
GPIO_writePin(78,1);
// GpioDataRegs.GPBSET.bit.GPIO33 = 1;
int xTblIdx; //integer valued Table index
float A0,A1,A2; //Table coefficients
float *entry;
float result;
int i;
//
//Preprocessing
//
//__mdebugstop();
xTblIdx = fVal * TABLE_SIZE_M_1; //convert table index to u16-bits
xTblIdx = xTblIdx * 3; //Table is ordered as 3 32-bit coefficients, the
//index points to these triplets, hence the *3*sizeof(float)
// entry = &CLAasinTable[xTblIdx];
// A0 = *entry++;
// A1 = *entry++;
// A2 = *entry;
// result = A0 + fVal*(A1 + A2*fVal);
//
// //
// //Post processing
// //
// if(fVal < 0)
// {
// result = - result;
// }
xTblIdx = xTblIdx * 3333;
xTblIdx = xTblIdx * 3234 + xTblIdx * 367 ;
fResult = xTblIdx;
// GpioDataRegs.GPBCLEAR.bit.GPIO33 = 1;
GPIO_writePin(78,0);
}void main(void)
{
//
// Intialize device clock and peripherals
//
Device_init();
//
// Initialize GPIO and configure the GPIO pin as a push-pull output
//
GPIO_setPadConfig(78, GPIO_PIN_TYPE_STD);
GPIO_setPinConfig(GPIO_78_GPIO78);
GPIO_setDirectionMode(78, GPIO_DIR_MODE_OUT);
GPIO_setMasterCore(78, GPIO_CORE_CPU1_CLA1);
GPIO_setDirectionMode(80, GPIO_DIR_MODE_OUT);
GPIO_setPinConfig(80);
//
// Disable pin locks and enable internal pullups.
//
//Device_initGPIO(); //skipped for this example
//
// Initialize PIE and clear PIE registers. Disables CPU interrupts
//
Interrupt_initModule();
//
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
//
Interrupt_initVectorTable();
//
// Configure the CLA memory spaces first followed by
// the CLA task vectors
//
CLA_configClaMemory();
CLA_initCpu1Cla1();
//
// Enable Global Interrupt (INTM) and realtime interrupt (DBGM)
//
EINT;
ERTM;
//
// Run the test
//
//CLA_runTest();
for(;;)
{
int xTblIdx1; //integer valued Table index
float result1;
int i;
GPIO_writePin(80,1);
CLA_forceTasks(CLA1_BASE,CLA_TASKFLAG_1);
xTblIdx1 = fVal * TABLE_SIZE_M_1; //convert table index to u16-bits
xTblIdx1 = xTblIdx1 * 3; //Table is ordered as 3 32-bit coefficients, the
//index points to these triplets, hence the *3*sizeof(float)
xTblIdx1 = xTblIdx1 * 3333;
xTblIdx1 = xTblIdx1 * 3234 + xTblIdx1 * 367 ;
fResult = xTblIdx1;
GPIO_writePin(80,0);
DEVICE_DELAY_US(50);
}
}
测试发现GPIO78引脚都是再GPIO80拉高后1us才被拉高，而且主函数执行时间才750ns,而CLA执行了4.2us,
蓝色为CPIO80,红色为GPIO78.
按我的理解，CLA跟CPU应该是并行处理，触发AICK1，进入TASK1执行代码，CPU继续继续z主程序代码，然后等待task完成，但实测并没有得到这个结果。
