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boards:demov1 [2022/11/13 12:04]
darron 		boards:demov1 [2022/11/21 13:48] (current)
darron
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 {{:boards:demov1-test.jpg?200|J-Link test with J-Link EDU Mini}} {{:boards:demov1-test.jpg?200|J-Link test with J-Link EDU Mini}}
 \\ \\ \\ \\
-{{:boards:demov1-test2.jpg?200|OpenOCD test with J-Link CLONE}}+{{:boards:demov1-test3.jpg?200|OpenOCD test with J-Link CLONE}}
 \\ \\ \\ \\
 {{boards:stm32f030.png?200|Pinout}} {{boards:stm32f030.png?200|Pinout}}
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 SPI1 MISO PA6 SPI1 MISO PA6
 SPI1 MOSI PA7 SPI1 MOSI PA7
 +</code>
 +
 +===Clocks===
 +
 +<code>
 +HSE 8000000 X1 8MHz
 +HSI 8000000
 +LSE 0       N/A
 +LSI 32768
 </code> </code>
  
 === Power === === Power ===
-Power is supplied on the USB socket which feeds a 3V3 LDO regulator. The USB socket does not support I/O, it's only for powering the device. 
  
-=== Setup ===+Power is supplied on the USB socket or the 5V pins. This feeds a 3V3 LDO regulator. 
 + 
 +The USB socket does not support I/O, it's only for powering the device. 
 + 
 +=== Test === 
 + 
 +For testing this board use a [[interfaces:ftdi|UM232R]] for power, serial comms, 
 +reset and a source or external interrupt. Picocom is used to control the reset 
 +pin and provide a pulse for testing STM32 EXTI. 
 + 
 +For programming, use [[tools:segger|J-Link]] or [[tools:openocd|OpenOCD]]. 
 + 
 +==Wiring==
  
 <code> <code>
 +   +--------+
 +   |        |TXD-----------RX
 +   |  FTDI  |DTR#----1K----PA0
 +USB| UM232R |RTS#---390R---NRST
 +   |        |RXD-----------TX
 +   |        |GND-----------GND
 +   |        |USB-----------5V
 +   +--------+
 +   +--------+
 +USB| JLINK/ |DIO-----------DIO
 +   | CLONE  |CLK-----------CLK
 +   +--------+   
 +   
 +USB on left is RPi host and USB on right is USB 5V pin on UM232R.
 +</code>
  
-FTDI +==Comms==
-UM232R+
  
 +The lower-rts option to picocom will take the board out of
 +reset and run the program.
 +
 +<code>
 +picocom --quiet --lower-rts -b 115200 /dev/ttyUSB0
 </code> </code>
  
-=== Test ===+From the RS232 perspective RTS is inverted so when picocom takes 
 +the line low, it's actually a high logical output and the board 
 +is taken out of reset. 
 + 
 +==Reset== 
 + 
 +Picocom CTRL A CTRL G will toggle the RTS line state. 
 + 
 +==Reboot== 
 + 
 +If the board is sleeping, picocom can reboot the board to prepare 
 +it for new programming. 
 + 
 +<code> 
 +picocom --quiet --lower-rts --baud 115200 --exit-after 0 /dev/ttyUSB0 
 +</code> 
 + 
 +==Pulse== 
 + 
 +Picocom CTRL A CTRL P will pulse the DTR pin from low to high for 
 +1 second to test EXTI high or low edge. 
 + 
 +=== Programming ===
  
-Test SWD with J-Link and OpenOCD.+Use SWD with J-Link or OpenOCD.
  
 ==J-Link== ==J-Link==