I have Psoc cy8ckit-042 connected with 2 SCB Uart ports. One to the PC and the other to a SIM7600A GSM module. Programming and debug for the cy8ckit is via the onboard usb port.
P4.0 and P4.1 connected to the SIM7600. P0.4 and P0.5 connected to the PC via a Silicon Labs CP210x USB to UART Bridge.
I have tried multiple communication programs but Putty works as well as others. I can enter all the AT commands to the sim 7600 from putty and they work fine. But I cannot get the psoc to send commands to the sim 7600 without losing quite a bit of the message. I have tried turning the echo on and off. No difference. I’ve tried delays, no difference.
I’m using an interrupt to initiate a simple AT command to the SIM7600. When the interrupt is initiated, It prints to the PC uart (Putty) and it works fine, but I print to the sim7600 and it loses many of the characters.
A similar setup works fine using Arduino. I have tried many scenarios to get this to work on the PSOC but it does not cooperate.
I am using an interrupt handler for each UART for receiving. The basic program came from your CE224406_PSoC4_UART.pdf.
I have attached an archive of the project. You may ignore the functions that are not being used.
You might want to read this discussion. Similar project, 2 UARTs, CY8C4245 on KIT-049 (same PSoC as KIT-042), GSM module.
It starts off to get UARTs working using same app note CE224406, eventually talks with GSM module.
Good luck with our project.
Thank-you. I downloaded "two_uart_200425", set the pins, adjusted the board
rate and it runs perfectly.
The project is similar to mine except it collects an entire line where I
was responding to each character. Should be interesting.
I will add an interrupt handler to respond with a message to the GSM module
based on a pin going high.
I will let you know how it works.
On Thu, Dec 31, 2020 at 8:56 PM BiBi_1928986 <email@example.com>
I have 2 UARTs working. I can type a simple command like AT or ATE1 on the pc, it goes to the psoc via uartCMD which sends it to the GSM modem via uartGSM. I get a response "OK" from the UART_GSM which shows up on the PC via the UART_CMD. I can even send a set of commands which result in a text message being sent to my phone. Therefore the GSM is working, the 2 uarts are working.