MCU: различия между версиями
Материал из fidoman.ru
Sergey (обсуждение | вклад) м (→AWU) |
Sergey (обсуждение | вклад) (→STM8) |
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| Строка 28: | Строка 28: | ||
* on int disable AWU (or new int will be generated instantly) | * on int disable AWU (or new int will be generated instantly) | ||
* before re-enable re-load counter | * before re-enable re-load counter | ||
| + | |||
| + | == UART == | ||
| + | |||
| + | word length: UART_CR1.M | ||
| + | stop bits: UART_CR3 | ||
| + | baud rate: UART_BRR2 then UART_BRR1 | ||
| + | en transmitter: UART_CR2.TEN | ||
| + | send data: UART_DR and wait until TC goes 1 | ||
Версия 14:44, 4 ноября 2021
cam
ESP32-CAM OV2460
links
Lightweight C compilers http://fun4diy.com/
STM8
compilers comparation http://www.colecovision.eu/stm8/compilers.shtml
startup
- Power requirements: 3.3-5V
- Reset circuit (100nF cap)
- Select clock source (ext.crystal/HSI)
- Choose halt modes for
- flash
- HSI, HSE
- use timer or AWU for wake-up if no ext.ints
- calibrate LSI osc.
- configure GPIO
- use watchdog
AWU
- on int disable AWU (or new int will be generated instantly)
- before re-enable re-load counter
UART
word length: UART_CR1.M stop bits: UART_CR3 baud rate: UART_BRR2 then UART_BRR1 en transmitter: UART_CR2.TEN send data: UART_DR and wait until TC goes 1
