SAMD51 multiple SERCOM issue

[bakry_developer]

Hi,

I need help configuring my board please.

I am using SPI for 2 devices which they use:
MOSI -> PA17 -> { PORTA, 17, PIO_SERCOM_ALT, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH1, TC2_CH1, EXTERNAL_INT_1 }, // SERCOM 3.0 (MOSI)

MISO -> PA18 -> { PORTA, 18, PIO_SERCOM, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // D7 // MISO SERCOM 1.3

SCK -> PA16 -> { PORTA, 16, PIO_SERCOM_ALT, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH0, TC2_CH0, EXTERNAL_INT_0 }, // SERCOM 3.1 (SCK)

CS0 -> PA19 -> { PORTA, 19, PIO_DIGITAL, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH3, TC3_CH1, EXTERNAL_INT_3 }, // D9

CS1 -> PA21 -> { PORTA, 21, PIO_DIGITAL, PIN_ATTR_PWM_G, No_ADC_Channel, TCC0_CH1, NOT_ON_TIMER, EXTERNAL_INT_5 }, // D11

I am also using 2 UART, in which the first one is using:
SERIAL2_TX -> PA01 -> { PORTA, 1, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_1 }, // UART TX (SERCOM4 PAD 0)

SERIAL2_RX -> PA00 -> { PORTA, 0, PIO_SERCOM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_0 }, // UART RX (SERCOM4 PAD 1)

The other UART is using:
SERIAL1_TX -> PA04 -> { PORTA, 4, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_4 }, // UART TX (SERCOM0 PAD 0)

SERIAL1_RX -> PA05 -> { PORTA, 5, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 }, // UART RX (SERCOM0 PAD 1)

SERIAL1_CTS -> PA19 -> { PORTA, 19, PIO_DIGITAL, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH3, TC3_CH1, EXTERNAL_INT_3 }, // D9

SERIAL1_RTS -> PA07 -> { PORTA, 7, PIO_DIGITAL, PIN_ATTR_PWM_E, No_ADC_Channel, TC1_CH1, TC1_CH1, EXTERNAL_INT_7 }, // D2

Can someone help me in checking if the variant configuration I set is correct?

Also, in my code, I am using the following classes:
Serial2:
// Create a new UART instance for GNSS (SERCOM4)
static Uart GNSSUART(&sercom4, GNSS_RX_PIN, GNSS_TX_PIN, SERCOM_RX_PAD_1, UART_TX_PAD_0);

Serial1:
// Create a new UART instance using SERCOM3
static Uart TelitUART(&sercom3, UART_RX_PIN, UART_TX_PIN, SERCOM_RX_PAD_1, UART_TX_PAD_0);

SPI:
static SPIClass SPI_CUSTOM(&sercom1, MISO_PIN, SCK_PIN, MOSI_PIN, SPI_PAD_2_SCK_3, SERCOM_RX_PAD_0);

Lastly, I am using Arduino IDE, with ADAFRUIT ITSYBITSY board configuration, while my board is using ATSAMD51G19 microcontroller.

Thanks in advance.

[pert]

I moved your topic to an appropriate forum category @bakry_developer .

In the future, please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

This is an important part of responsible forum usage, as explained in the "How to get the best out of this forum" guide. The guide contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.

[lastchancename]

What you’ve provided is similar to a NETLIST, what we need is a SCHEMATIC scribbled or drawn out on a piece of paper to begin understand what you’re asking.

[bakry_developer]

Thank you so much for your answer.

Let me rephrase my question. I am not sure if I well configured the code or the variant files. Therefore I shared parts of the variant files and piece of code above. While for the hardware, I simply have 4 peripherals, 2 of them are using UART and two are using SPI. I am sharing the microcontroller schematic here.

Please let me know if it is more clear now.

Thanks in advance.