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Merge pull request #5060 from cdwilson/cdwilson/circuitpython/sparkfun-stm32f405-micromod
stm/boards: Add support for SparkFun STM32 MicroMod Processor board.
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‎.github/workflows/build.yml

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- "sparkfun_samd21_mini"
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- "sparkfun_samd51_micromod"
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- "sparkfun_samd51_thing_plus"
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- "sparkfun_stm32f405_micromod"
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- "sparkfun_thing_plus_rp2040"
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- "spresense"
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- "stackrduino_m0_pro"

‎ports/atmel-samd/boards/sparkfun_samd51_micromod/mpconfigboard.h

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#define MICROPY_HW_BOARD_NAME "SparkFun MicroMod SAMD51"
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#define MICROPY_HW_BOARD_NAME "SparkFun MicroMod SAMD51 Processor"
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#define MICROPY_HW_MCU_NAME "samd51j20"
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#define CIRCUITPY_MCU_FAMILY samd51
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// Status LED
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#define MICROPY_HW_LED_STATUS (&pin_PA23)
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// On-board flash
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#define SPI_FLASH_MOSI_PIN &pin_PA09
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#define SPI_FLASH_MISO_PIN &pin_PA10

‎ports/atmel-samd/boards/sparkfun_samd51_micromod/mpconfigboard.mk

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LD_FILE = boards/samd51x20-bootloader-external-flash.ld
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USB_VID = 0x1b4f
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USB_PID = 0x0020 # Used by uf2 bootloader
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USB_PRODUCT = "SparkFun MicroMod SAMD51"
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USB_PRODUCT = "SparkFun MicroMod SAMD51 Processor"
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USB_MANUFACTURER = "SparkFun Electronics"
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CHIP_VARIANT = SAMD51J20A

‎ports/atmel-samd/boards/sparkfun_samd51_micromod/pins.c

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‎ports/nrf/boards/sparkfun_nrf52840_micromod/README.md

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CircuitPython pin definitions, while simialr to other boards represent a slight departure from just the typical `A` and `D` pin definitions. The majority of general pins are labled as `G` (or alternatively, `BUS`,) as the MicroMod system they build on uses those names to specify pins that may not be specficially analog or digital.
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This can be somewhat confusing, especially around the analog pins. Here's a quick pin-map. This pin map will use the label either on the [SparkFun MicroMod ATP Carrier Board](https://www.sparkfun.com/products/16885), or the pin name on the [graphical datasheet](https://cdn.sparkfun.com/assets/learn_tutorials/1/4/0/1/MicroMod_nRF52840_v1.0_Graphical_Datasheet.pdf). Some of the aditional aliases are just names to make naming consistent (e.g.: RTS/CTS), but they also can refer to additional functionality a pin may have (e.g.: NFC pins)
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This can be somewhat confusing, especially around the analog pins. Here's a quick pin-map:
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MicroMod Pin # | ATP Pin Label | Pin Definition | Additional Definitons | Pin/Port Reference | Notes
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:--------------|:--------------|:--------------|:-----------------------|:-------------------|:------
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8 | G11 | | | (Not Connected) |
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10 | D0 | D0 | | P0_27 |
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11 | BOOT | BOOT | BUTTON1 | P0_07 |
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12 | SDA | SDA | | P0_08 |
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13 | RTS1 | RTS | RTS1 | P1_02 |
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14 | SCL | SCL | | P0_11 |
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15 | CTS1 | CTS | CTS1 | P1_09 |
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16 | /I2C INT | I2C_INT | P0_15 |
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17 | TX | TX | TX1 | P1_03 |
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18 | D1 | D1 | CAM_TRIG | P1_08 |
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19 | RX | RX | RX1 | P1_10 |
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20 | RX2 | RX2 | | P1_05 |
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22 | TX2 | TX2 | | P1_07 |
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32 | PWM0 | PWM0 | P0_06 |
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34 | A0 | A0 | ADC0 | P0_04 | Attached to AIN2
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38 | A1 | A1 | ADC1 | P0_05 | Attached to AIN3
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11 | BOOT | BOOT | | P0_07 |
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12 | SDA | I2C_SDA | SDA | P0_08 |
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13 | RTS1 | UART_RTS1 | | P1_02 |
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14 | SCL | I2C_SCL | SCL | P0_11 |
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15 | CTS1 | UART_CTS1 | | P1_09 |
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16 | /I2C INT | I2C_INT | |P0_15|
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17 | TX | UART_TX1 | TX | P1_03 |
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18 | D1 | D1 | | P1_08 |
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19 | RX | UART_RX1 | RX | P1_10 |
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20 | RX2 | UART_RX2 | | P1_05 |
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22 | TX2 | UART_TX2 | | P1_07 |
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32 | PWM0 | PWM0 | |P0_06|
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34 | A0 | A0 | | P0_04 | Attached to AIN2
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38 | A1 | A1 | | P0_05 | Attached to AIN3
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40 | G0 | G0 | BUS0 | P0_29 | Attached to AIN5
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42 | G1 | G1 | BUS1 | P0_03 | Attached to AIN1
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44 | G2 | G2 | BUS2 | P1_13 |
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46 | G3 | G3 | BUS3 | P1_12 |
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47 | PWM1 | PWM1 | P0_16 |
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47 | PWM1 | PWM1 | |P0_16|
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48 | G4 | G4 | BUS4 | P1_11 |
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49 | BATT_VIN | BATT_VIN3 | | P0_30 | Attached to AIN6, will be battery voltage / 3. |
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49 | BATT_VIN | BATT_VIN3 | | P0_30 | Attached to AIN6, will be battery voltage / 3.
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50 | PDM_CLK | PDM_CLK | | P0_25 |
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51 | SDA1 | SDA1 | | P1_01 |
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51 | SDA1 | I2C_SDA1 | | P1_01 |
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52 | PDM_DATA | PDM_DATA | | P0_26 |
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53 | SCL1 | SCL1 | | P0_24 |
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55 | /CS | CS | | P0_20 |
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57 | SCK | SCK | | P0_28 | Attached to AIN4
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59 | COPI | COPI | MOSI | P0_31 | Attached to AIN7
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61 | CIPO | CIPO | MISO | P0_02 |
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63 | G10 | G10 | NFC2, ADC_DP, CAM_VSYNC | P0_10 | Attached to NFC2
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65 | G9 | G9 | NFC1, ADC_DM, CAM_HSYNC | P0_09 | Attached to NFC1
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53 | SCL1 | I2C_SCL1 | | P0_24 |
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55 | /CS | SPI_CS | | P0_20 |
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57 | SCK | SPI_SCK | LED_CLK | P0_28 | Attached to AIN4
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59 | COPI | SPI_COPI | SPI_MOSI, LED_DAT | P0_31 | Attached to AIN7
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60 | SCK1 | SDIO_SCK | SPI_SCK1 | |
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61 | CIPO | SPI_CIPO | SPI_MISO | P0_02 |
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62 | COPI1 | SDIO_CMD | SPI_COPI1 | |
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63 | G10 | G10 | | P0_10 | Attached to NFC2
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64 | CIPO1 | SDIO_DATA0 | SPI_CIPO1 | |
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65 | G9 | G9 | | P0_09 | Attached to NFC1
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66 | DAT1 | SDIO_DATA1 | | |
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67 | G8 | G8 | | P1_14 |
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68 | DAT2 | SDIO_DATA2 | | |
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69 | G7 | G7 | BUS7 | P1_04 |
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70 | CS1 | SDIO_DATA3 | SPI_CS1 | |
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71 | G6 | G6 | BUS6 | P1_06 |
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73 | G5 | G5 | BUS5 | P0_15 |
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## Peripheral Naming
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CircuitPython attempts to stay in line with the naming of the serial peripheral naming in the MicroMod system. The bare UART pins are also named <pin>1. The UART 2 pins are named <pin>2. However, the I2C names on MicroMod are <I2C pin> and <I2C pin>1. Perhaps this will change in the future, but as of [Interface v1](https://cdn.sparkfun.com/assets/learn_tutorials/1/2/0/6/SparkFun_MicroMod_Interface_v1.0_-_Pin_Descriptions.pdf), it may lead to some confusion.
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The SparkFun MicroMod spec uses a zero-based peripheral numbering scheme. The 0th peripheral is the default and the "0" is omitted from the peripheral name. For example, the first I2C peripheral is named `I2C` (instead of `I2C0`) and the second I2C peripheral is named `I2C1`. Note: MicroMod `UART` is not present in the edge connector pinout because the primary debug serial port (i.e.`UART0`) is exposed as a virtual serial port over USB. As a result, the first UART peripheral in the edge connector pinout is `UART1` and the second UART peripheral is `UART2`.
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For more details, see https://www.sparkfun.com/micromod#tech-specs.
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## Bootloader Notes
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The MicroMod nRF52840 Processor needs to have the [Adafruit nRF52 UF2 bootloader](https://github.com/adafruit/Adafruit_nRF52_Bootloader/pull/194) flashed on it. [[TODO: LINK TO BUILD]]
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The MicroMod nRF52840 Processor needs to have the [Adafruit nRF52 UF2 bootloader](https://github.com/adafruit/Adafruit_nRF52_Bootloader/releases/latest) flashed on it.
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## Hardware Reference
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‎ports/nrf/boards/sparkfun_nrf52840_micromod/mpconfigboard.h

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#include "nrfx/hal/nrf_gpio.h"
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#define MICROPY_HW_BOARD_NAME "SparkFun MicroMod nRF52840"
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#define MICROPY_HW_BOARD_NAME "SparkFun MicroMod nRF52840 Processor"
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#define MICROPY_HW_MCU_NAME "nRF52840"
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// Status LED
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#define MICROPY_HW_LED_STATUS (&pin_P0_13)
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#define DEFAULT_I2C_BUS_SCL (&pin_P0_11)
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#define DEFAULT_I2C_BUS_SDA (&pin_P0_08)
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‎ports/nrf/boards/sparkfun_nrf52840_micromod/mpconfigboard.mk

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USB_VID = 0x1B4F
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USB_PID = 0x0021
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USB_PRODUCT = "SFE_nRF52840_MicroMod"
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USB_PRODUCT = "SparkFun MicroMod nRF52840 Processor"
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USB_MANUFACTURER = "SparkFun Electronics"
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MCU_CHIP = nrf52840

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