Band
Status¶
- uMyo sensor supports 3 modes right now: RF24, RF52, and BLE Advertising mode. If we want to connect to iOS, BLE Advertising mode limits bandwidth too much. Need to reverse engineer and flash a firmware with BLE GATT capabilities.
- How to flash-over-the-air quickly
- If we're not going to be using the other modes, remap one of the button presses to pairing or something
Development¶
Dependencies¶
The project was setup using platformio, so:
brew install platformio
Quick Start¶
IDE:
TODO
Vim:
TODO
Flash configs¶
Hardware¶
ESP32-C3-MINI Module¶
Naming Schemes¶
So the model naming scheme is like: ESP32-C3-MINI-{1,1U}-{N4,H4}
- The 1/1U refers to the antenna option:
- 1: Onboard PCB antenna
- 1U: External antenna via a connector
- The N4/H4 refers to the chip used:
- N4: Uses the ESP32-C3FN4 chip
- H4: Uses the ESP32-C3FH4 chip
- Both of them are exactly the same 32-bit RISC-V single-core processor, except that the H4 supports higher operating temperature than the N4.
Pin Definitions¶
| Name | No. | Type | Function |
|---|---|---|---|
| GND | 1, 2, 11, 14, 36-53 | P | Ground |
| 3V3 | 3 | P | Power supply |
| NC | 4, 7, 9, 10, 15, 17, 24, 25, 28, 29, 32-35 | — | NC |
| IO2 | 5 | I/O/T | GPIO2, ADC1_CH2, FSPIQ |
| IO3 | 6 | I/O/T | GPIO3, ADC1_CH3 |
| EN | 8 | I | High: on, enables the chip. Low: off, the chip powers off. Note: Do not leave the EN pin floating. |
| IO0 | 12 | I/O/T | GPIO0, ADC1_CH0, XTAL_32K_P |
| IO1 | 13 | I/O/T | GPIO1, ADC1_CH1, XTAL_32K_N |
| IO10 | 16 | I/O/T | GPIO10, FSPICS0 |
| IO4 | 18 | I/O/T | GPIO4, ADC1_CH4, FSPIHD, MTMS |
| IO5 | 19 | I/O/T | GPIO5, ADC2_CH0, FSPIWP, MTDI |
| IO6 | 20 | I/O/T | GPIO6, FSPICLK, MTCK |
| IO7 | 21 | I/O/T | GPIO7, FSPID, MTDO |
| IO8 | 22 | I/O/T | GPIO8 |
| IO9 | 23 | I/O/T | GPIO9 |
| IO18 | 26 | I/O/T | GPIO18, USB_D- |
| IO19 | 27 | I/O/T | GPIO19, USB_D+ |
| RXD0 | 30 | I/O/T | GPIO20, U0RXD |
| TXD0 | 31 | I/O/T | GPIO21, U0TXD |
ABRobot ESP32-C3-MINI Dev Module¶
