You are here: start » interfaces » cp2102

Differences

This shows you the differences between two versions of the page.

--- interfaces:cp2102 [2020/08/05 04:54]
darron [Pickle Microchip PIC ICSP]
+++ interfaces:cp2102 [2020/08/22 06:07]
darron [Linux]
@@ Line 10: / Line 10: @@
 Transmit is labelled RXD and receive as TXD on this module.
-The device appears to be a genuine cp2102.
+=== CJMCU module ===
-=== CJMCU module (not pictured yet) ===
+This module uses a cp2102 device incorrectly wired with
+v4 on their output pins instead of 3v3. This module is totally
-This module appears to use a fake cp2102 device and rather
-than the on-chip VREG being 3V3 these boards output 4.3V
-or 4.4V on their output pins. This module is totally
 unreliable at 460800 baud.
+A source on the web explains that the RESET pin is incorrectly
+pulled high to VUSB.
+=== 6 in 1 USB to TTL RS232 USB TTL to RS485 ===
+There is lot going on here and none has been tested. A diagram exists
+explaining the switches.
+{{:interfaces:6in1.jpg?400}}
+<code>
+Mode			Pin	Function
+TTL Level Interface	TXD	TTL Transmit
+TTL Level Interface	RXD	TTL Receive
+TTL Level Interface	GND	TTL ground
+Level Interface	232-TX	232 Transmit
+Level Interface	232-RX	232 Receive
+Level Interface	GND	232 Ground
+Level Interface	A	485A+
+Level Interface	B	485B-
++5V Voltage Output	+5V	+5V Voltage Output
+.3 Voltage Output	3V3	3.3V Voltage Output
+DTR Output		DTR	Special Function
+RTS Output		RTS	Special Function
+</code>
 === Linux ===
 == udev /dev/ttyCP2102 ==
 <code>
 KERNEL=="ttyUSB*",\
@@ Line 33: / Line 57: @@
 == udev by-id ==
 <code>
 /dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0
 </code>
-udev by-id is not supported by Pickle Microchip PIC ICSP.
 === Pickle Microchip PIC ICSP ===

Differences

start

interfaces

advertisement

Toolbox