I want to send out values with analog pins which would be read by analog pins of any other microcontroller.
It appears that you're referring to the PIC16F1619, all the related information that you can look for your requirements is inside the datasheet, I invite you to look at PIC16F1619 Web Page from Microchip and you will see all of the features and the current documentation to work with all of the peripherals included in this particular Microcontroller, however, according to the datasheet, the RA0 pin from this MCU has the feature to give an 8bit DAC output.
I hope this could help.
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I want to build a project with an STM32G070.
I need a couple of PWM pins.
I look at the datasheet and user manual, and I cannot find anyware if all pins of if only some are PWM capable and so, witch one it is.
I want to know because, if i look at the BluePill, not all pin are PWM.
Anyone can guide me ?
To answer the question - no, not all pins can be configured for PWM. However, most STM32s (including the STM32G070) have multiple timers, many with multiple channels which can generate PWM signals, and these can be mapped to many pins. So it's almost guaranteed that you'll find two spare pins that are not used by other peripherals, that you can use for PWM.
As mentioned, PWM signals are generated by timers. You can consult the reference manual for the STM32G070 to see which timers are available, and which ones have channels that can generate PWM signals. And you can reference the datasheet to see which pins they can be mapped to.
If I was designing a board, I'd create (e.g. in STM32CubeIDE) the crucial peripherals first (e.g. any SPI, I2C, UARTs, etc.) Then I'd see which pins are left over that could be used for PWM. There are bound to be several.
I have custom board on which I can upload my code generated from platformio and as board bluepill_f103c8. And I can make led blink etc. but when I want to do analogRead it always returns 0.
I'm trying to read from PA8 pin.
In my setup I put that pin as INPUT_ANALOG, do I need to do something else in order to get the reading?
Voltage that's on pin is about 0.25V that I'm trying to read.
According to STM32F103 Datasheet, page 34, any of 3 onboard ADCs simply do not have the ability to connect to PA8. PA8 can only work as simple GPIO (default, reads only 0 and 1), or as USART1_CK, TIM1_CH1, MCO in alternative configuration.
Arduino can use it as PWM output, or software USART, but there is no way to get analog reading from it.
If you really need to read analog voltage coming to that line, you would have to modify your board and solder PA8 to one of PA0..PA7, PB0..PB1, PC0..PC5 and re-configure ADC to read from that line.
#TonoNam, regarding your problem: unless PA1 is permanently damaged, it is fully capable of working with ADC, so there is something wrong with initialization or reading procedure.
Reference the pinout diagram here https://wiki.stm32duino.com/index.php?title=File:Bluepillpinout.gif
analogRead will only work with the pins which have associated ADC channels.
So this is PA0 through PA7, and then PB0 and PB1, so I guess this is your issue.
Looks like PA8 is a PWM output.
I've been trying to measure temperature and pressure using BMP180 using my BLE112 module from Bluegiga. I connected SDA to pin P1_6 and clock to P1_7 according to the BGScript documentation. Whatever i do i can't get anything pushed to my characteristic... all the time it's equal to 0. I try to proceed as it is mentioned in the BMP180 datasheet.. starting with reading calibration.
This is my hardware.xml: link
temperature_sensor.bgs: link
There is much comments in the code since i am trying to check if i can read anything.. I am using
B-BLE application on android..
If someone could explain me on how to read teamperature or point any mistakes it would be coool!
Thanks!
sorry for late response.
bmp 180 works with serial data(SDA) and SCL(serial clock) which called I2C.
on your microcontroller you are using check the specific pin named SCL and SDA. each MCU have a particular pin dedicated for I2C connection.
also, are you using a library? check whether the library support ur MCU, better still use arduino and adafuit bmp180 library it will be easy to solve your problem.
I am trying to figure out the communication protocol of the transmitter chip found inside an RC remote (FS-GT2B). Originally, I thought it was I2C but after some research it seems less likely because it is lacking some characteristic lines. The silkscreen says "SCK", "SCS" and "SDIO". Here's a picture of the chip's pinouts: . Can anyone offer some pointers as to what the communication protocol of this guy is?
Thanks!
The pins correspond to clock (SCK), chip select (SCS), and data input output (SDIO). You need to toggle the SCK pin in the appropriate way as you change or read the data on the SDIO pin. the SCS pin is likely for data direction (read or write).
There is no easy way to determine the protocol from a black box. Instead, you need to remove the RF shielding case to see the chip. A soldering iron and a solder sucker will do the job. Be careful not to overheat the circuit inside.
Use the number on chip to determine what kind of chip it is, then find the datasheet by searching the internet.
Once you have all that and write some code, this is appropriate place to ask questions about it.
I'm trying to send an analog value from xbee to another xbee (WHICH IS CONNECTED TO ARDUINO). But I don't want to read this value serially (x=Serial.read();).
I would like to read this value from an arduino's analog input (x=analogRead(A0);). Can I pass an analog value from 1st xbee input pin to 2nd xbee output pin and connect this pin with ex.arduino's analog input (A0) and process it? If it can be done, how does this occur? (sorry for my english)
This is indeed possible. Xbee's have DAC and digital line support. Check out the user manual found in this Manual
The information you're going to need is on page 12. This is for series one xbee's.
For series two xbee's the process is different and can be found in this manual
manual on page 41. Good luck!
I would suspect you would be better off using xbee API and just do an AT command to read pin, then transfer it over serial TX out to the arduino RX in.