Hello, everyone
How do I set the FX3 frequency to 400Mhz correctly?
Because I now test GPIO for pure output of 0 and 1, I see 459.39Khz on my oscilloscope.
Here is my FX3 firmware:
BulkLpAppThread_Entry():
void BulkLpAppThread_Entry ( uint32_t input)
{
CyU3PGpioClock_t gpioClock;
gpioClock.fastClkDiv = 2;
gpioClock.slowClkDiv = 0;
gpioClock.simpleDiv = CY_U3P_GPIO_SIMPLE_DIV_BY_2;
gpioClock.clkSrc = CY_U3P_SYS_CLK;
gpioClock.halfDiv = 0;
CyU3PGpioInit(&gpioClock, NULL);
CyU3PGpioSimpleConfig_t gpioConfig;
gpioConfig.outValue = CyTrue;
gpioConfig.inputEn = CyFalse;
gpioConfig.driveLowEn = CyTrue;
gpioConfig.driveHighEn = CyTrue;
gpioConfig.intrMode = CY_U3P_GPIO_NO_INTR;
CyU3PGpioSetSimpleConfig(45, &gpioConfig);
for (;;){
CyU3PGpioSetValue (45,CyFalse);
CyU3PGpioSetValue (45,CyTrue);
}
}
CyFxApplicationDefine ();
void CyFxApplicationDefine (void)
{
void *ptr = NULL;
uint32_t retThrdCreate = CY_U3P_SUCCESS;
ptr = CyU3PMemAlloc (CY_FX_BULKLP_THREAD_STACK);
retThrdCreate = CyU3PThreadCreate (&BulkLpAppThread,
"21:Bulk_loop_AUTO",
BulkLpAppThread_Entry,
0,
ptr,
CY_FX_BULKLP_THREAD_STACK,
CY_FX_BULKLP_THREAD_PRIORITY,
CY_FX_BULKLP_THREAD_PRIORITY,
CYU3P_NO_TIME_SLICE,
CYU3P_AUTO_START
);
if (retThrdCreate != 0)
{
while(1);
}
}
main():
int main (void){ //1
CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
CyU3PSysClockConfig_t CONFIG_CLOCK;
CONFIG_CLOCK.setSysClk400 = CyTrue;
CONFIG_CLOCK.cpuClkDiv = 2;
CONFIG_CLOCK.dmaClkDiv = 2;
CONFIG_CLOCK.mmioClkDiv = 2;
CONFIG_CLOCK.useStandbyClk = CyFalse;
CONFIG_CLOCK.clkSrc = CY_U3P_SYS_CLK;
status = CyU3PDeviceInit (&CONFIG_CLOCK);
if (status != CY_U3P_SUCCESS)
{
goto handle_fatal_error;
}
status = CyU3PDeviceCacheControl (CyTrue, CyTrue, CyFalse);
if (status != CY_U3P_SUCCESS)
{
goto handle_fatal_error;
}
CyU3PIoMatrixConfig_t io_cfg;
CyU3PMemSet ((uint8_t *)&io_cfg, 0, sizeof(io_cfg));
io_cfg.isDQ32Bit = CyFalse;
io_cfg.s0Mode = CY_U3P_SPORT_INACTIVE;
io_cfg.s1Mode = CY_U3P_SPORT_INACTIVE;
io_cfg.useUart = CyFalse;
io_cfg.useI2C = CyFalse;
io_cfg.useI2S = CyFalse;
io_cfg.useSpi = CyFalse;
io_cfg.lppMode = CY_U3P_IO_MATRIX_LPP_DEFAULT;
io_cfg.gpioSimpleEn[0] = 0x00000000; //0~31
io_cfg.gpioSimpleEn[1] = 0x00002000; //45 on
io_cfg.gpioComplexEn[0] = 0;
io_cfg.gpioComplexEn[1] = 0;
status = CyU3PDeviceConfigureIOMatrix (&io_cfg);
if (status != CY_U3P_SUCCESS)
{
goto handle_fatal_error;
}
CyU3PKernelEntry ();
return 0;
handle_fatal_error:
while (1);
}
Am I missing something set?
