New answers tagged

0 votes

Serial connection of isolated DC/DC supplies

If you use TEN 40-2423E you add complexity, because you must connect two of them in parallel and these groups in series to get 60 V / 2.666 A. They have dual output, but these outputs are not ...
user avatar
  • 3,502
0 votes
Accepted

PIC16F1519 gets stuck when reading UART (RCIF never goes to 1)

Solved it by implementing Rx interruptions onto the library I was using: if (PIR1bits.TXIF) { endline = UARTReadString(buf, sizeof buf); } ...
user avatar
  • 9
1 vote
Accepted

How to read data from two shift registers in serial

Context You get a lot with the 74HC589. You can latch the parallel input independently from what's actively going on with the shift register. And that's a nice-to-have in a part like this. The way it'...
user avatar
  • 70.9k
1 vote

How to read data from two shift registers in serial

The 74HC589 consists of an 8 bit data latch and an 8 bit shift register. RCLK loads the 8 bit input into the data latch. SLOAD loads the contents of the data latch into the shift register. Once in the ...
user avatar
  • 5,422
1 vote

PIC16F1519 gets stuck when reading UART (RCIF never goes to 1)

From my experience with similar (PIC16F145x) parts. According to the datasheet, the FERR and OERR bits of the RCSTA register are read-only and thus cannot be cleared as you do in uart.c. The datasheet ...
user avatar
  • 206
0 votes

PIC16F1519 gets stuck when reading UART (RCIF never goes to 1)

One starting point would be checking to see what value is actually stored in _XTAL_FREQ. I THINK an int in the 8-bit compiler is 16 bits.
user avatar
1 vote

Trinket M0 - Using USB serial out when running on battery

USB data connections can be established without using the power supply line. I verified this with a modified USB cable, that has the 5 V wire cut in two.
user avatar
2 votes
Accepted

DIY Chromebook debug cable (SuzyQable / Suzy Q Cable)

I found the problem, this breakout board is available as 'Male' and 'Female' version, the pcb silkscreen is intended for the socket version (female) so the plug version (male) is basically reversed. ...
user avatar
  • 41
4 votes
Accepted

How is the output of this circuit RS232?

how does this circuit output RS232? The specific device is a MAX3241 (not MAX324) and, if you read its data sheet you will see that inside the chip are voltage supply circuits that can produce ...
user avatar
  • 389k
2 votes
Accepted

Isolated serial circuit - Works only 1 way

After further experimentation, the issue turned out to be a loose connection on a breadboard column. I had tried to change all components, wires, USB-serial adapters but the defective breadboard was ...
user avatar

Top 50 recent answers are included