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interfaces:cp2102 [2014/12/19 11:09] darron |
interfaces:cp2102 [2020/08/19 09:35] 127.0.0.1 external edit |
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| - | This is a high speed USB UART which should easily attain 460800 baud in Linux or even higher. | + | This is a high speed USB UART and a genuine item should easily attain 460800 baud in Linux or even higher. |
| - | == Documentation at Silicon Labs === | + | === BAITE module (pictured) |
| - | [[http:// | + | |
| - | === BAITE Cp2102 module (pictured) === | ||
| Transmit is labelled RXD and receive as TXD on this module. | Transmit is labelled RXD and receive as TXD on this module. | ||
| - | === Linux ==== | + | === CJMCU module |
| + | |||
| + | This module uses a cp2102 device incorrectly wired with | ||
| + | 4v4 on their output pins instead of 3v3. 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. | ||
| + | |||
| + | {{: | ||
| + | |||
| + | < | ||
| + | Mode Pin Function | ||
| + | TTL Level Interface TXD TTL Transmit | ||
| + | TTL Level Interface RXD TTL Receive | ||
| + | TTL Level Interface GND TTL ground | ||
| + | 232 Level Interface 232-TX 232 Transmit | ||
| + | 232 Level Interface 232-RX 232 Receive | ||
| + | 232 Level Interface GND 232 Ground | ||
| + | 485 Level Interface A 485A+ | ||
| + | 485 Level Interface B 485B- | ||
| + | +5V Voltage Output +5V +5V Voltage Output | ||
| + | 3.3 Voltage Output 3V3 3.3V Voltage Output | ||
| + | DTR Output DTR Special Function | ||
| + | RTS Output RTS Special Function | ||
| + | </ | ||
| + | |||
| + | === Linux === | ||
| == udev / | == udev / | ||
| < | < | ||
| - | KERNEL==" | + | KERNEL==" |
| - | GROUP=" | + | |
| + | | ||
| + | ATTRS{serial}==" | ||
| + | GROUP=" | ||
| + | | ||
| + | | ||
| </ | </ | ||
| Line 24: | Line 59: | ||
| / | / | ||
| </ | </ | ||
| - | udev by-id is not supported by the k8048 Microchip PIC programmer. | + | udev by-id is not supported by Pickle |
| - | === k8048 Microchip PIC programmer | + | === Pickle |
| == Low Voltage Programming with VPP at 3V3 == | == Low Voltage Programming with VPP at 3V3 == | ||
| Line 51: | Line 86: | ||
| == Configuration == | == Configuration == | ||
| < | < | ||
| - | DEVICE=/ | + | DEVICE=TTY |
| + | IFACE=/ | ||
| SLEEP=0 | SLEEP=0 | ||
| BITRULES=0x001F | BITRULES=0x001F | ||
| - | BUSY=0 | ||
| - | DEBUG=1 | ||
| </ | </ | ||
| + | |||
| + | === Resources === | ||
| + | [[http:// | ||
| + | |||
