Arduino_core_stm32: NUCLEO F401RE support

[Adminius]

first try:
https://github.com/Adminius/Arduino_Core_STM32/commit/0646d9167f8ab9755a30b91fd9275436c3d7b296

i used CubeF4 to generate some files. but i don't kwon if it was right settings

i can compile and upload, but the board do nothing. (blink doesn't blink)
any tips?

[Adminius]

http://stm32duino.com/viewtopic.php?f=48&t=2304&p=31082

[Adminius]

tested with auto genereted file, same issue
https://github.com/Adminius/Arduino_Core_STM32/commit/9235195e70490512397734388ce5ea24af037c25

[fpistm]

Hi @Adminius,

it seems this is your clock config which is not correct.

I have commited an update on my github :
https://github.com/fpistm/Arduino_Core_STM32/commit/40100d6c3f10be982c90e704873249f0406e73d1

Quick tests:

• Blink
• AnalogReadSerialOut
• Firmata (Analog, I/O, PWM)
• I2C (thanks cishield read/Write on i2c eeprom)
• SPI (TFTdisplayBitmapLogo)

[Adminius]

should we really disable PWM on PA2/PA3 (Serial Pins)?
PWM doesn't work D0 and D1 because of ST-Link connection.
On a custom board it can be different. I sink it make sense to allow PWM on D0/D1

my offer:

const PinMap PinMap_PWM[] = {
// {PA0, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // A0 // TIM2_CH1
{PA0, TIM5, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // A0 // TIM5_CH1
// {PA1, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // A1 // TIM2_CH2
{PA1, TIM5, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 2, 0)}, // A1 // TIM5_CH2
// {PA2, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 3, 0)}, // D1 // TIM2_CH3 - ST-Link
{PA2, TIM5, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 3, 0)}, // D1 // TIM5_CH3 - ST-Link
// {PA2, TIM9, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM9, 1, 0)}, // D1 // TIM9_CH1 - ST-Link
// {PA3, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 4, 0)}, // D0 // TIM2_CH4 - ST-Link
{PA3, TIM5, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 4, 0)}, // D0 // TIM5_CH4 - ST-Link
// {PA3, TIM9, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM9, 2, 0)}, // D0 // TIM9_CH2 - ST-Link
{PA5, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // D13 // TIM2_CH1 - SPI
{PA6, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 1, 0)}, // D12 // TIM3_CH1 - SPI
// {PA7, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 1, 1)}, // D11 // TIM1_CH1N - SPI
{PA7, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // D11 // TIM3_CH2
{PA8, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 1, 0)}, // D7 // TIM1_CH1
{PA9, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 0)}, // D8 // TIM1_CH2
{PA10, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 0)}, // D2 // TIM1_CH3
{PA11, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 4, 0)}, // D37 // TIM1_CH4
{PA15, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // D21 // TIM2_CH1
// {PB0, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 1)}, // A3 // TIM1_CH2N
{PB0, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 3, 0)}, // A3 // TIM3_CH3
// {PB1, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 1)}, // D41 // TIM1_CH3N
{PB1, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 4, 0)}, // D41 // TIM3_CH4
{PB3, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // D3 // TIM2_CH2
{PB4, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 1, 0)}, // D5 // TIM3_CH1
{PB5, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // D4 // TIM3_CH2
{PB6, TIM4, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 1, 0)}, // D10 // TIM4_CH1
{PB7, TIM4, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 2, 0)}, // D22 // TIM4_CH2
// {PB8, TIM10, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM10, 1, 0)}, // D15 // TIM10_CH1 - SCL
{PB8, TIM4, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 3, 0)}, // D15 // TIM4_CH3 - SCL
// {PB9, TIM11, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM11, 1, 0)}, // D14 // TIM11_CH1 - SDA
{PB9, TIM4, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 4, 0)}, // D14 // TIM4_CH4 - SDA
{PB10, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 3, 0)}, // D6 // TIM2_CH3
{PB13, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 1, 1)}, // D44 // TIM1_CH1N
{PB14, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 1)}, // D43 // TIM1_CH2N
{PB15, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 1)}, // D42 // TIM1_CH3N
{PC6, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 1, 0)}, // D34 // TIM3_CH1
{PC7, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // D9 // TIM3_CH2
{PC8, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 3, 0)}, // D33 // TIM3_CH3
{PC9, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 4, 0)}, // D32 // TIM3_CH4
{NC, NP, 0}
};

[fpistm]

In fact, we can do what we want.
Up to end user to know restriction.
If D0 and D1 required for other stuff then Serial instance should be change to another Pins.
I could also update firmata to ignore PWM or ADC is Serial is used. Maybe a good idea.

I let you made some tests and if you want you could do a pull request when you think it is ok.

[Adminius]

my intention: as flexible as possible.
P.S. if we should make all stuff completely idiot proof, we should also disable the same timer/channel on different pins... but i hate suchlike restrictions :/
If it possible, pls. update firmata ;) thx!

[fpistm]

We are agreed ;)
I will do the update for firmata.

[Adminius]

PWM OK
Serial OK
Interrupt OK
EEPROM read doesn't work :(

[fpistm]

I could not check the issue until begin August.
I will be in vacation for 2weeks and before leave I'm performing a release.
Maybe @fprwi6labs or someone else could have a look.

[Adminius]

It is ok for me.
Happy holidays and good weather! :)

[fprwi6labs]

@Adminius
Could you try to replace in cores/arduino/stm32/stm32_eeprom.c

elif defined (STM32F4xx)

// Use the last 16 page of the second bank (sector 15)

define FLASH_BASE_ADDRESS ((uint32_t)(0x0810C000))

define FLASH_DATA_SECTOR 15

with

elif defined (STM32F4xx)

// Use the last 16 page of the second bank (sector 15)

define FLASH_BASE_ADDRESS ((uint32_t)(0x0806 0000))

define FLASH_DATA_SECTOR 7

[Adminius]

thx. this works.
but i can not test other supported F4xx boards...

[fpistm]

It should be fine to not have FLASH_BASE_ADDRESS and other hard coded.
I think it should be possible to use define to compute those one like I've made for L4

#elif defined (STM32L4xx)
#ifndef FLASH_BANK_2
#define FLASH_BANK_NUMBER   FLASH_BANK_1
#else
#define FLASH_BANK_NUMBER   FLASH_BANK_2
#endif // FLASH_BANK_2
// Flash base address
#define FLASH_PAGE_NUMBER   ((uint32_t)((FLASH_SIZE/FLASH_PAGE_SIZE) -1))
#define FLASH_BASE_ADDRESS ((uint32_t)(0x08000000 + (FLASH_PAGE_NUMBER*FLASH_PAGE_SIZE)))

[fprwi6labs]

I know your are in vacation soon @fpistm so I will push a PR with the modification today before the new release.

[fpistm]

Thanks @Adminius for your PR. It is merged.
I've also pushed some minor corrections.