make
make flash
make test
If OS X reports contention for your device:
sudo kextunload -b com.apple.driver.AppleUSBCardReader
sudo kextunload -b com.apple.iokit.IOUSBMassStorageClass
| Designator(s) | Quantity | Description | Part Number |
|---|---|---|---|
| IC1 | 1 | STM8S 8-bit micro (TSSOP-20) | STM8S003F3P6 |
| P2 | 1 | 10-pin right-angled header, .1" Pitch | PPTC101LGBN-RC |
| U1 | 1 | Full speed USB <-> 9-pin Serial (SOP-16) | CH340G |
| U2 | 1 | 3.3V Regulator (SO-8) | LD1117D33CTR |
| Y1 | 1 | 12Mhz Crystal | NX3225SA |
| C1 | 1 | 0.1 uF (0603) | ... |
| C2 | 1 | 10 uF (0603) | ... |
| C3 | 1 | 1 μF polarized (0603) | ... |
| C4, C5 | 2 | 20 pF (0603) | ... |
- GND
- 3.3V
- SCL - PB4
- SDA - PB5
- SCK - PC5
- MISO - PC7
- MOSI - PC6
- TXD - PD2
- RXD - PD0
- G3 - PD1
USB:
- TXD - PD6
- RXD - PD5
Reference manual: http://www.st.com/web/en/resource/technical/document/reference_manual/CD00190271.pdf
- SPI: http://www.st.com/web/en/resource/technical/document/reference_manual/CD00190271.pdf#page=259
- I2C: http://www.st.com/web/en/resource/technical/document/reference_manual/CD00190271.pdf#page=285
- GPIO: http://www.st.com/web/en/resource/technical/document/reference_manual/CD00190271.pdf#page=106
- UART: http://www.st.com/web/en/resource/technical/document/reference_manual/CD00190271.pdf#page=318
CPU reference: http://www.st.com/web/en/resource/technical/document/programming_manual/CD00161709.pdf
Product Datasheet: http://www.st.com/web/en/resource/technical/document/datasheet/DM00024550.pdf
- Memory map: http://www.st.com/web/en/resource/technical/document/datasheet/DM00024550.pdf#page=32
- Pin map: http://www.st.com/web/en/resource/technical/document/datasheet/DM00024550.pdf#page=22
Errata: http://postar.sino-star.com/public/uploads/20120214161049_871.pdf
Datasheet: http://www.seeedstudio.com/wiki/images/7/7c/CH340DS1_EN.PDF
https://github.com/vdudouyt/stm8flash
brew install sdcc
http://www.colecovision.eu/stm8/128-EVAL%20Dhrystone.shtml
interrupts are priority-based outputs in 64 byte packets. priority output is real time input of "uniterruptable streams", specifically i2c read (max 920Khz) and uart input (max 18400bps) simultaneously
also note that i2c can stretch clock lines so really it's only uart interrupts
there are many buffers, but this one is mine(d) for its outputting content. all packets block on new input until it's swapped for the outputting. so buffers must clean faster than they collectively are filled for uninterruptable streams (and acks).
output from radius is asap and dumped into its buffers. simple packet id + NACK/ACK acknowledgement byte on the usb line.
ID0 + NACK/ACK ID1 + LEN + <=64 byte packet
input? it is 64 byte packets. wait for an nack, then resend, or continue
LEN + <=64 byte packet
input is synced at start by waiting for an 'R' on both sides
packets are USB-style repeated until a 0 length packet or < 64 length packet is received
MIT/ASL2