2.9 KiB
@defgroup boards_im880b im880b @ingroup boards @brief Support for the im880b with stm32l151cb-a
Hardware
MCU
| MCU | stm32l151cb-a |
|---|---|
| Family | ARM Cortex-M3 |
| Vendor | ST Microelectronics |
| RAM | 16KiB |
| Flash | 128KiB |
| Frequency | 32MHz (no external oscillator connected) |
| FPU | no |
| Timers | 10 (8x 16-bit, 2x watchdog timers) |
| ADCs | 1x 24-channel 12-bit |
| UARTs | 3 |
| SPIs | 2 |
| I2Cs | 2 |
| Vcc | 1.65V - 3.6V |
| Datasheet | Datasheet |
| Reference Manual | Reference Manual |
| Programming Manual | Programming Manual |
| Board Manual | Board Manual |
User Interface
Flashing
As no usb connector is present on the device an external programmer must be connected to the board for flashing. You can use JTAG or STLINK programmer.
-
JTAG:
-
- JTDO: PB_3 / P39
-
- JTDI: PA_15 / P38
-
- JTCK: PA_14 / P37
-
- JTMS: PA_13 / P34
-
STLINK:
-
- NRST: NRST / P7
-
- SWCLK: PA_14 / P37
-
- SWDAT: PA_13 / P34
STM32 Loader
To flash RIOT on the board, after connecting the UART-USB bridge, just run:
BOARD=im880b make flash
This uses the stm32loader script to erase the memory and flash it interfacing with the STM32 ROM bootloader.
Connecting via Serial
The default UART port is the USART1, there is no usb connection a USB/TTL converter must be used to connect to the board TX & RX pins. The default port is /dev/ttyUSB0. The pin connections are:
- USART1:
-
- TX: PA_9 / P30
-
- RX: PA_10 / P31
BOARD=im880b make term
SX1272 radio
Please note that the board has a Semtech SX1272 radio. This means that when the semtech-loramac package or the sx127x driver are used the correct driver version (sx1272) must be selected.