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Mesh4all
May the mesh be with you
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Mesh4all
May the mesh be with you
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2.4 GHz board + 20dBm PA More...
Files | |
| file | board.h |
| Board specific definitions for the VS203 board. | |
| file | gpio_params.h |
| Board specific configuration of direct mapped GPIOs. | |
| file | periph_conf.h |
| Peripheral MCU configuration for the VS203 board. | |
2.4 GHz board + 20dBm PA
MeshMe is a complete communications system based on TI's CC2538 system on chip (SoC) and the CC2592 front end, featuring an ARM Cortex-M3 with 512KiB flash, 32KiB RAM and 2.4 GHz RF interface.
The CC2538 SoC combines an ARM Cortex-M3 microcontroller with an IEEE802.15.4 radio plus a bunch of peripherals as you can see in the following table.
| MCU | CC2538SF53 |
|---|---|
| Family | ARM Cortex-M3 |
| Vendor | Texas Instruments |
| RAM | 32KiB |
| Flash | 512KiB |
| Frequency | 32MHz |
| FPU | no |
| Timers | 4 |
| ADCs | 1x 12-bit (8 channels) |
| UARTs | 2 |
| SPIs | 2 |
| I2Cs | 1 |
| Vcc | 2V - 3.6V |
| Datasheet | Datasheet (pdf file) |
| Reference Manual | Reference Manual |
The TI's CC2592 is front end (FE) designed for the CC25XX family, it contains PA, LNA, switches, RF-matching, and balun.
| CC2592 | Min | Max |
|---|---|---|
| Vcc | 2V | 3.7V |
| Frequency range | 2400MHz | 2483.5MHz |
| Output power (PA) | 22 dBm | |
| LNA Gain | 6 dB | 11 dB |
| Datasheet | Datasheet (pdf file) |
The device is controlled by three digital terminals, PA_EN, LNA_EN, and HGM. The control logic is shown in the following table:
| PA_EN | LNA_EN | HGM | Mode of operation |
|---|---|---|---|
| 0 | 0 | X | Power down |
| X | 1 | 0 | Rx mode Low Gain |
| X | 1 | 1 | Rx mode High Gain |
| 1 | 0 | X | Tx mode |
1.9.1