All Questions
29
questions
0
votes
2
answers
120
views
Is it normal to get garbage output through UART when resetting the microcontroller?
I have written functioning code for Serial Communication through UART, and when stepping through the code it transmits characters just fine. I have done this using microlib, so I can use printf (I ...
- 1
0
votes
1
answer
122
views
How should I debug this ARM Cortex M STM32 UART write?
I have a STM32F446RE on a Nucleo F446RE, and I'm trying to learn how to program the UART to write over the Virtual COM Port (connected to USART2).
I'm able to download someone else's code, modify it ...
- 1,135
1
vote
4
answers
2k
views
UART not sending correct data in STM32
I have to send data by UART1 from my STM32F429. The problem is that the data is not sent correctly.
I debugged and I got this.
For testing I want to send ...
- 11
0
votes
0
answers
161
views
Health check for Lichee Pi Nano with UART
I have a Lichee Pi Nano SBC, TTL Adapter (UART) and 8 GB SD-Card.
Following pins connected together:
...
- 101
1
vote
1
answer
112
views
PL011 write to DR when transmission disabled
The PL011 manual seems to assume that a TXE (transmission) is enabled when the CPU writes to DR:
It doesn't say what happens if the the transmission was disabled (bit 8 of control register is 0)
Is ...
- 157
0
votes
0
answers
242
views
Problem using UART0 in TM4C123 Tiva C Launch Pad
I'm trying to interface UART0 with the my laptop using the ICDI
the code I used is from Mazidi's book :
...
- 105
2
votes
2
answers
872
views
SAMD21 SERCOM / UART problem: cannot enable RX and TX
I've been trying to set up a USART on an ATSAMD21E18A-MU and have been running into issues.
Currently, I've narrowed the problem down to the fact that ...
- 182
0
votes
1
answer
198
views
ATSAM4E UART1 interrupt not working
I am working on ATSAM4E8C on custom board. The uart0 and its interrupt is working fine but while on uart1 I faced an strange issue. The uart1 is sending the data but interrupt handler is not calling ...
-1
votes
1
answer
255
views
ARM SoC UART interaction with peripheral UART
I am sorry that I couldn't find this answer in this site or web. I have an ARM SoC(Host) which needs to communicate with the peripheral having ARM Micro controller using UART. Linux runs on top of ARM ...
- 1
1
vote
2
answers
724
views
LPC1768 Baud rate
I've been trying to configure UART module of LPC1768. Board comes with a crystal oscillator of 12Mhz. It does nothing more than receiving a character and transmitting it at the same time. I am using ...
- 241
1
vote
1
answer
583
views
UART communication between Cypress FM4 (Cortex M4) and Arduino
I am trying to transmit data from (FM4-176L-S6E2CC-ETH Starter kit) to Arduino (Leonardo) using UART communication. Wire connections (FM4 [p. 8-9] -> Arduino):
P19 (SOT2_0) -> D10
P18 (SIN2_0) -...
- 111
1
vote
1
answer
456
views
USARTbaud-rate not set truely
I am using STM32VL discovery board(STM32f100rb6).. Using this code for USART setup (including baud-rate):
...
- 147
1
vote
0
answers
556
views
UART baudrate steps
I'm trying to connect 2 devices to each other based on the UART peripheral. First one support up to 1.875 Mb/s & the other one up to 1228.8 KBd. Both work correctly on the 115200 but I need more ...
4
votes
3
answers
4k
views
Trying to flash STM32f030f4 (ARM, Cortex M0) - what is proper wiring?
I've got STM32F030F4 chips from shop, made a small breadboard adapter for it and tried to connect to its built-in bootloader via USART1.
I've failed and I'm somewhat bewildered about wiring. My ...
- 403
2
votes
1
answer
146
views
LPC1110 confusion about default system clock and uart baud rate
I'm trying to get acquainted with ARMs on example of LPC1110 device. And there is some confusion about selecting baud rate for UART.
I suppose it is running at ...
