Sorry, I am guessing, that all of this has been covered before and I am just not finding it.
I have been playing around with the Arduino GIGA board and was curious if the H7 Portenta code base and the like was more mature, in some of the areas that I have been investigating on the GIGA.
Things like USB Host (and device),SD Cards, SPI, DMA, Hardware Serial and the like. Along with the Portenta H7 I also purchased a Hat Carrier, as it was the cheapest and has breakouts for most of things I am curious to play with.
First thing I am running into is, How do you map the pin labels on the HAT to what the Arduino pin number is to control it? (or Pin Name)
Example:
How do you map these 20 pins to the Arduino pin numbers.
Note: I have done most of it, by extracting some of the tables from the HAT PDF that shows the PIN numbers of the connectors along with the high denity pin number, and then extracted from the the Portenta H7 PDF what the high density pins go to which Port/Pin on processor, and then at variant.cpp to map those to Arduino pin numbers
And have many of them now in excel:
| Pin number | Arduino Pin | Port Pin | Silkscreen | Power Net | Portenta HD Standard Pin | High-Density Pin | Interface |
|---|---|---|---|---|---|---|---|
| PH01 | 15 | PA0_C | A0 | ANALOG_A0 | J2-73 | ||
| PH02 | 16 | PA1_C | A1 | ANALOG_A1 | J2-75 | ||
| RPI29 | 13 | PA10 | RX1 | SERIAL1_RX | J1-35 | UART 1 RX | |
| PH03 | 17 | PA2_C | A2 | ANALOG_A2 | J2-77 | ||
| PH04 | 18 | PA3_C | A3 | ANALOG_A3 | J2-79 | ||
| PH07 | 21 | PA4 | A6 | ANALOG_A6 | J2-78 | ||
| PH08 | 22 | PA6 | A7 | ANALOG_A7 | J2-80 | ||
| RPI07 | 6 | PA8 | PWM0 | PWM_0 | J2-59 | ||
| RPI32 | 14 | PA9 | TX1 | SERIAL1_TX | J1-33 | UART 1 TX | |
| RPI35 | PB9 | I2S WS | I2S_WS | J1-58 | I2S WS | ||
| PH12 | PC13 | PWM4 | GPIO_0 | J2-46 | |||
| PH05 | 19 | PC2 | A4 | ANALOG_A4 | J2-74 | ||
| RPI21 | 10 | PC2 | SPI1 CIPO | SPI1_MISO | J2-40 | SPI 1 MISO |
|
| PH06 | 20 | PC3 | A5 | ANALOG_A5 | J2-76 | ||
| RPI19 | 8 | PC3 | SPI1 COPI | SPI1_MOSI | J2-42 | SPI 1 MOSI |
|
| RPI22 | 5 | PC6 | PWM1 | PWM_1 | J2-61 | ||
| RPI26 | 4 | PC7 | PWM2 | PWM_2 | J2-63 | ||
| RPI12 | PD3 | I2S CK | I2S_CK | J1-56 | I2S CK | ||
| RPI11 | PD4 | GPIO2 | GPIO2 | J2-50 | |||
| RPI13 | PG10 | GPIO6 | GPIO_6 | J2-58 | |||
| PH14 | PG14 | TX2 | SERIAL2_TX | J2-26 | UART 2 TX | ||
| RPI31 | 3 | PG7 | PWM3 | PWM_3 | J2-65 | ||
| PH16 | PG9 | RX2 | SERIAL2_RX | J2-28 | UART 2 RX | ||
| RPI05 | PH11 | I2C2 SCL | I2C2_SCL | J2-47 | I2C 2 SCL | ||
| RPI03 | PH12 | I2C2 SDA | J2-45 | I2C 2 SDA | |||
| RPI37 | 0 | PH15 | PWM6 | PWM_6 | J2-62 | ||
| RPI28 | PH7 | I2C0 SCL | I2C0_SCL | J1-46 | I2C 0 SCL | ||
| RPI27 | 11 | PH8 | I2C0 SDA | I2C0_SDA | J1-44 | I2C 0 SDA | |
| RPI24 | 7 | PI0 | SPI1 CE | SPI1_CS | J2-36 | SPI 1 CS | |
| RPI23 | 9 | PI1 | SPI1 SCK | SPI1_CK | J2-38 | SPI 1 CK | |
| RPI38 | PI2 | I2S SDI | I2S_SDI | J1-60 | I2S SDI | ||
| RPI40 | PI3 | I2S SDO | I2S_SDO | J1-62 | I2S SDO | ||
| RPI16 | PI5 | SAI CK | SAI_CK | J2-49 | SAI CK | ||
| RPI15 | PI6 | SAI D0 | SAI_D0 | J2-53 | SAI D0 | ||
| RPI18 | 12 | PI7 | SAI FS | SAI_FS | J2-51 | SAI FS | |
| PH10 | PJ10 | PWM8 | PWM_8 | J2-66 | |||
| RPI33 | 2 | PJ11 | PWM4 | PWM_4 | J2-67 | ||
| PH09 | PJ7 | PWM7 | PWM_7 | J2-64 | |||
| RPI08 | SERIAL3_TX | PJ8 | TX3 | SERIAL3_TX | J2-25 | UART 3 TX | |
| RPI10 | SERIAL3_RX | PJ9 | RX3 | SERIAL3_RX | J2-27 | UART 3 RX | |
| RPI36 | 1 | PK1 | PWM5 | PWM_5 | J2-60 | ||
| PH11 | LICELL | LICELL | J2-7 | RTC Power Source |
Where the first column starting with PH is the Pin Header, and RPI is the 40 pin connector... There are still several of the RPI pins that don't easily direct back to an Arduino pin number. Yes I know in many cases like pinMode, you can use pin names, but for example suppose I am porting my GIGA version of the ILI9341 display driver to this board, and which to use an Adafruit ILI9341 display, which has the old RPI2 26 pin type connector and use the pins like:
Luckily I think the CS and DC pins are actually on pins I have pin numbers for, but otherwise,
I would probably need to compute one:
Like the first blank one has pin name PB9 So might work with current tables like:
26 + 16*1 + 9 or 51... for after the first 26 entries, there are entries for A0-A15, B0-B15, C....
But is this what everyone does? Or is there some other table or picture that simply shows for each of the Standard Arduino Hats/breakout boards, These are the pins for this processor...
Just wondering.
Again just getting started...
Then it is off to seeing if this uses the same library for USBHost as the GIGA? I think so, and does it have the same problems and limitations? For example, does not use DMA, Probably does not support USB LS (without using my fork/branch), ...
Will be interesting to see if it is easier to debug on this board?
Now back to playing