boards/arduino-nano-33-ble-sense: add support for arduino-nano-33-ble-sense #20668
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Sorry for the mess, it seems that I struggled a bit when I squashed my commits. And there was still some warnings remaining on the whitespaces that should be fixed now. Everything should be fine now, tests are running successfully and everything should be in the same commit. |
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| #include "board.h" | ||
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| #if defined(APDS9960) || defined(HTS221) || defined(lps22hb) |
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| #if defined(APDS9960) || defined(HTS221) || defined(lps22hb) | |
| #if defined(MODULE_APDS9960) || defined(MODULE_HTS221) || defined(MODULE_LPS22HB) |
that's what I would expect, but not fully sure. Same below.
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That's right I don't know why I wrote this that way its absolutely not correct
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Which makes me wonder whether it is actually needed, since it should have evaluated to false as is.
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Can you confirm it is really needed, or did it work with the old ifdef too?
| /** | ||
| * VDD needs to be set in order to have the sensors powered | ||
| * It also seems that if the internal I2C pins are not set as input, | ||
| * all the sensors connected will not work | ||
| */ |
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| /** | |
| * VDD needs to be set in order to have the sensors powered | |
| * It also seems that if the internal I2C pins are not set as input, | |
| * all the sensors connected will not work | |
| */ | |
| /* | |
| * VDD needs to be set in order to have the sensors powered. | |
| * It also seems that if the internal I2C pins are not set as input, | |
| * all the sensors connected will not work. | |
| */ |
Also, I would have expected the i2c driver to do this already automatically, maybe someone more knowledgeable than me in board porting can comment?
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Indeed, this had me surprised too - the I2C driver will re-configure those pins anyway, so it's weird you are setting them to input here.
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Maybe some of the drivers that were tested don't call the i2c_init function and therefore the pins are not correctly set (because the init_pins function is not called)?
https://github.com/RIOT-OS/RIOT/blob/master/cpu/nrf5x_common/periph/i2c_nrf52_nrf9160.c#L187
For example the lsm6dsxx driver does not call i2c_init: https://github.com/RIOT-OS/RIOT/blob/master/drivers/lsm6dsxx/lsm6dsxx.c#L52-L109
On the other hand there are drivers that call i2c_init such as this one: https://github.com/RIOT-OS/RIOT/blob/master/drivers/pca9633/pca9633.c#L69
When I worked on the AT24Cxx driver, it worked with the nRF52840 on the nRF52840DK, but the driver does not call i2c_init either. Maybe the default configuration for pins in the nRF52840DK is Input and since the arduino-nano-33-ble-sense has a bootloader, they might be configured differently (not Input)?
This is just a guess though, I don't have an Arduino Nano 33 BLE Sense board to test the hypothesis.
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i2c_init() is only called once in periph_common/init.c.
Since it's a shared bus, there is no point in the drivers calling that function.
there are drivers that call i2c_init
good find, that's a bug.
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The more you know 🤣
But now I don't have any ideas why it would behave like that either and I don't have any of the sensors to crosscheck it with the nRF52840DK (which does not need to have the GPIOs set explicitly for I2C to work).
| .scl = GPIO_PIN(0, 15), | ||
| .sda = GPIO_PIN(0, 14), |
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| .scl = GPIO_PIN(0, 15), | |
| .sda = GPIO_PIN(0, 14), | |
| .scl = SCL1, | |
| .sda = SDA1, |
since you have them already defined
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That was exactly why I defined those pins but for some reason I forgot to translate them there (I'm also using them in the board.c that's why I defined them if you're wondering)
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| # Copyright (c) 2020 HAW Hamburg | |||
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Would you mind updating the copyright?
Contribution description
This PR adds support for arduino-nano-33-ble-sense. Please note that it provides all the configuration to use the internal sensors and actuators but not all of them since they are not currently supported by RIOT (or only the older versions are supported such as LSM6DSXX).
This code is based on the code of the arduino-nano-33-ble as they share the same base (the sense version mostly provides sensors and actuators in addition).
Testing procedure