mirror of
https://github.com/eddyem/stm32samples.git
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124 lines
6.1 KiB
Markdown
124 lines
6.1 KiB
Markdown
Multiport board
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====================================
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Seven isolated interfaces:
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- 1 CAN
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- 3 RS-485
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- 2 or 1 RS-232
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- 1 SSI or 1 RS-422 (in this case only one RS-232)
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Inner USB interfaces (IFx):
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1. RS-485 (1)
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2. RS-485 (2)
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3. RS-485 (3)
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4. RS-232 (1)
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5. RS-232 (2) or RS-422 (by jumpers)
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6. CAN
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7. SSI (over SPI, by jumpers) or configuration interface (if "Config mode" jumper opened)
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# Pinout
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### Sorted by pin number
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| Pin # | Pin name | function | settings | comment |
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|---------|-------------|-------------|---------------|---------------------|
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| 1 | (VBAT) | | | |
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| 2 | PC13 | NC | | |
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| 3 | PC14 | NC | | |
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| 4 | PC15 | NC | | |
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| 5 | (OSC IN) | | | |
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| 6 | (OSC OUT) | | | |
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| 7 | (NRST) | | | |
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| 8 | PC0 | NC | | |
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| 9 | PC1 | NC | | |
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| 10 | PC2 | NC | | |
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| 11 | PC3 | NC | | |
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| 12 | (VREF-) | | | |
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| 13 | (VREF+) | | | |
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| 14 | PA0 | NC | | |
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| 15 | PA1 | USART2 DE | AF7 or PP | RS-485 (3) DE |
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| 16 | PA2 | USART2 TX | AF7 | RS-485 (3) Tx |
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| 17 | PA3 | USART2 RX | AF7 | RS-485 (3) Rx |
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| 18 | PF4 | NC | | |
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| 19 | (VDD) | | | |
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| 20 | PA4 | NC | | |
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| 21 | PA5 | SPI1 SCK | AF5 | SSI CLK |
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| 22 | PA6 | SPI1 MISO | AF5 | SSI DAT |
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| 23 | PA7 | NC | | |
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| 24 | PC4 | USART1 TX | AF7 | RS-485 (2) Tx |
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| 25 | PC5 | USART1 RX | AF7 | RS-485 (2) Rx |
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| 26 | PB0 | (USART1 DE) | PP OUT | RS-485 (2) DE |
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| 27 | PB1 | NC | | |
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| 28 | PB2 | NC | | |
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| 29 | PB10 | USART3 TX | AF7 | RS-485 (1) Tx |
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| 30 | PB11 | USART3 RX | AF7 | RS-485 (1) Rx |
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| 31 | (VSS) | | | |
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| 32 | (VDD) | | | |
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| 33 | PB12 | NC | | |
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| 34 | PB13 | NC | | |
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| 35 | PB14 | USART3 DE | AF7 or PP | RS-485 (1) DE |
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| 36 | PB15 | | | |
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| 37 | PC6 | NC | | |
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| 38 | PC7 | NC | | |
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| 39 | PC8 | NC | | |
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| 40 | PC9 | NC | | |
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| 41 | PA8 | NC | | |
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| 42 | PA9 | (CONF EN) | PU IN | Config jumper |
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| 43 | PA10 | (USB PU) | PP OUT | USB pullup |
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| 44 | PA11 | USB DM | AF14 | |
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| 45 | PA12 | USB DP | AF14 | |
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| 46 | PA13 | SWDIO | AF0 | |
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| 47 | (VSS) | | | |
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| 48 | (VDD) | | | |
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| 49 | PA14 | SWCLK | AF0 | |
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| 50 | PA15 | NC | | |
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| 51 | PC10 | UART4 TX | AF5 | RS-232 (1) Tx |
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| 52 | PC11 | UART4 RX | AF5 | RS-232 (1) Rx |
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| 53 | PC12 | UART5 TX | AF5 | RS-232(2) / 485 Tx |
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| 54 | PD2 | UART5 RX | AF5 | RS-232(2) / 485 Rx |
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| 55 | PB3 | NC | | |
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| 56 | PB4 | NC | | |
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| 57 | PB5 | NC | | |
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| 58 | PB6 | NC | | |
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| 59 | PB7 | NC | | |
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| 60 | (BOOT0) | | | |
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| 61 | PB8 | CAN RX | AF9 | |
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| 62 | PB9 | CAN TX | AF9 | |
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| 63 | (VSS) | | | |
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| 64 | (VDD) | | | |
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### Some comments.
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Interfaces:
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- IF1: RS-485 over USART3.
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- IF2: RS-485 over USART1.
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- IF3: RS-485 over USART2.
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- IF4: RS-232 over UART4.
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- IF5: RS-232 or RS-422 (by jumpers "IF5" and "SSI") over UART5.
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- IF6: CAN bus.
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- IF7: SSI (inaccessible when RS-422 selected) or interface for device configuration (if jumper "Config mode" is opened when device started").
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DMA1 channels:
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- Ch2: USART3_Tx
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- Ch3: USART3_Rx
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- Ch4: USART1_Tx
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- Ch5: USART1_Rx
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- Ch6: USART2_Rx
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- Ch7: USART2_Tx
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DMA2 channels:
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- Ch3: UART4_Rx
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- Ch5: UART4_Tx
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UART5 have no DMA channels, so used in interrupts.
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### Sorted by ports (with AF numbers).
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