PSoC™ 4 Forum Discussions
I designed a loop powered transmitter with XTR116, I made this application with Cy8C4025azi-S413. I used PWM block to generate DC for XTR116, but the PSOC does not work properly on supply provided by XTR116, Almost 24mA current PSOC draws which XTR unable to supply. The system clock I reduced to 6MHz. PWM clock is 12mhz.
I expect the PSOC must work on low power at 5mA in active mode
Show LessHi,
I use the capture function firstly. i don't know how to use it .
if i want to read the capture value , Does it must read it in ISR ? or read it in main loop?
Thank you !
Show LessHello everyone, i was try to do this cicuit:
My leave the circuit this way in PSOC 4:
and i'll try to build and appear a lot of the errors. Help me!
If you wanna see the paper that i take this circuit, i'll put together with the program.
Show LessHi, I'm working on a project with CY8CKIT-042-BLE and CYBLE-022001-PROG.
I did my project many times, but recently the module does not recognise the chip in side the prog.
I tried to figure the problem but I could not find any good solution for me.
One thing strange is that the chip's operating voltage is 3.3V, so I connect the system power jumper of the baseboard to 3.3V.
(I also checked the XRES pin and check it works well.)
But when I connect the module and measure the voltage output of the module with the test pin, it comes out about 1.67V.
And the PSoC Creator 4.2 does not recognise the chip.
So I change the jumper to supply 5V, and the test pin becomes about 2.2V.
Then PSoC Creator 4.2 recognize the chip, but it failed to program the chip with the Error message like
100 - FAILED! EraseAll operation failed
Is there anyone knows what the problem is? And also is the VDD pin value right??
Thank you.
Show LessHello everyone, i'm trying to run this program, i don't know why, but i can't see none number in relation the temperature sensor. Someone help me!!!
Look at the image:
I'm trying to do this exercise:
The KIT GROVE temperature sensor is a thermistor (LM358 - a semiconductor
temperature sensitive) that can be used to measure temperature. The range of
The operation of the LM358 is -40 - 125 ° C with a sensitivity of ± 1.5 ° C.
Read the signal provided by the thermistor using an ADC and use the code below to map the
value in degrees Celsius. Send the result by serial
int an_read;
int VREFplus = 4095; // Voltage value VREF + => 2 ^ n - 1
float temperature;
int B = 3975; // constant B for resistance
// do the Analog Reading here and put the result in an_read
// get the resistance of the sensor
resistance = (float) (VREFplus-an_read) * 10000 / an_read;
// convert to temperature via datasheet
temperature = 1 / (log (resistance / 10000) /B+1/298.15) -273.15;
In the above code, "an_read" is the value read from the ADC and B is a constant obtained from the datasheet of
sensor.
Show Lesswhen i read the AN85951 application note, this below question confuse me, for some use?when we use the capsense in FPC for smarthome device and the size is too small ,how can i refer the rules;
1、Hole size :The recommended value is 10mil, but on the FPC it can't design 10mil, so what should customer choose , and 10mil is for external diameter of hole size
and what about the internal diameter?
2、Liquid Tolerance with shield rules is : When the space of is not enough , how should we use , if the ensor and the shield electrode is 1 mm is necessary?
if this below rules is ok ??
ATwo-Layer PCB:
>Top layer: Hatch fill with 7-mil trace and 45-mil grid (25 percent fill). Hatch fill should be connected to the driven-shield signal.
>Bottom layer: Hatch fill with 7-mil trace and 70-mil grid (17 percent fill). Hatch fill should be connected to the driven shield signal
>The recommended air gap between the sensor and the shield electrode is 1 mm
3、if use inactive sensor connection to shield , how to Liquid Tolerance ?
4、For the power , how we use line width?
5、Sensor trace to sensor trace width , sensor trace to signal , sensor to power, signal to signal, if the sapce is not enough, should the 0.25mm is the necessray??if not what the recommended value? tks;
Show LessDear all group members,
I am using CY8C4014SXI-421 IC for my CapSense Button
project. My device (CY8C4014SXI-421) should be reset after
5 seconds if I keep the button pressed. So I want to full fill
my requirement through the watch dog timer.
There is an option of Auto Reset in CapSense Configuration
WIndows. But I get only 1 second of Auto Reset period (According
to my PCB design). I want this period as 5 seconds. So how
I can achieve this through Watch Dog Timer.
Show Less