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hello,
I was trying to make a gsm modem using sim800c . I have attached the circuit diagram of sim module. The at commands are working fine. The problem is that, the module stops working after inserting the sim card. After the power button is pressed, it gives the following messages. RDY...
yeah..... I figured out the problem. I didn't enable the Endpoint 1 after the set configuration command. I should have configure the Endpoint1 BDT table properly.
Thanks for the reply. I have read the HID specification, but I am still not able to figure out the above mentioned request. What request is windows sending? Is that this is any vendor specific request?
Yes TIMER2 is used for both PWMs , all settings are same for both modules. Pwm does not have any dependency with timer2 interrupt flag. It has dependency only with PR2 reg , PWMDCH, PWMDCL etc. The timer will get cleared when it becomes equal to PR2. So you don't have to clear the timer...
Hai,
If you enable PWM1 you will get output at RA0, likewise if you configure PWM2 you will get output at RA1. You can enable respective PWM output pin in PWMxCON reg. For example, for enabling pwm1 (RA0)out make PWM1OUT=1. You can achieve complemented output by adjusting the pwm polarity.
Hello experts....
I was trying to implement the HID mouse usb using PIC18f4550. I am using xc8 compiler and mplab Xide. I know that microchip provides the USB stack for HID class, but I don't want to use the library because my intention is to learn the usb protocol. I am using the same...
Why did you keep initialization functions (InitADC(),InitUART() etc.) ? It should be called once.
The program should be
void main()
{
TRISA=0x04; //0x000000 Set PORTA as output PORT
LATA=0x00;
ANSELA=0x04;
OSCCON=0x69;
InitADC();
InitUART;
while(1)
{...
ESP8266 is a best choice for the IOT. If you are planning to use the esp8266 you don't need to use AT commands. Esp8266 is an SOC and it has 32bit high performance cpu inside with lot of features like adc, uart,i2c etc. It can be programmed by arduino IDE or NodeMCU firmware. Please do some...
What development board are you using? Development board comes with inbuilt bootloader. Basically two types of bootloader is there ,USB and UART. If your board is programmed with UART bootloader you can use flash magic for uploading the hex file. The procedure for doing this should be mentioned...
If you don't have experience in pic programming ,lets start with the MIKROC and proteus software. It is very easy to start because Mikro c wil give you a very simple library but don't forget to read the datasheet. Zigbee module is nothing but the same uart communication. You just need to send...
Re: Why the stable supply voltage is "shaked" after connected to the testing board ?
Operating current rating is the maximum current that your power supply can source. If your circuit is taking more current than the specified current rating, it will overload your power supply and may lead to...
Re: Why the stable supply voltage is "shaked" after connected to the testing board ?
That may be because, your testing circuit is taking lot of current from the power supply. What amount of current is needed for your circuit ? What is the rating of your power supply?
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