diff --git a/boards/samd10-xmini/Kconfig b/boards/samd10-xmini/Kconfig new file mode 100644 index 0000000000..2e9f7e8991 --- /dev/null +++ b/boards/samd10-xmini/Kconfig @@ -0,0 +1,22 @@ +# Copyright (c) ML!PA Consulting GmbH +# +# This file is subject to the terms and conditions of the GNU Lesser +# General Public License v2.1. See the file LICENSE in the top level +# directory for more details. + +config BOARD + default "samd10-xmini" if BOARD_SAMD10_XMINI + +config BOARD_SAMD10_XMINI + bool + default y + select CPU_MODEL_SAMD10D14AU + select HAS_PERIPH_ADC + select HAS_PERIPH_DAC + select HAS_PERIPH_I2C + select HAS_PERIPH_PWM + select HAS_PERIPH_RTC + select HAS_PERIPH_RTT + select HAS_PERIPH_SPI + select HAS_PERIPH_TIMER + select HAS_PERIPH_UART diff --git a/boards/samd10-xmini/Makefile b/boards/samd10-xmini/Makefile new file mode 100644 index 0000000000..f8fcbb53a0 --- /dev/null +++ b/boards/samd10-xmini/Makefile @@ -0,0 +1,3 @@ +MODULE = board + +include $(RIOTBASE)/Makefile.base diff --git a/boards/samd10-xmini/Makefile.dep b/boards/samd10-xmini/Makefile.dep new file mode 100644 index 0000000000..264d8c7a0c --- /dev/null +++ b/boards/samd10-xmini/Makefile.dep @@ -0,0 +1,7 @@ +ifneq (,$(filter saul_default,$(USEMODULE))) + USEMODULE += saul_gpio +endif + +# Use Picolibc to reduce ROM usage +FEATURES_REQUIRED += picolibc +USEMODULE += picolibc diff --git a/boards/samd10-xmini/Makefile.features b/boards/samd10-xmini/Makefile.features new file mode 100644 index 0000000000..64b02ed670 --- /dev/null +++ b/boards/samd10-xmini/Makefile.features @@ -0,0 +1,13 @@ +CPU = samd21 +CPU_MODEL = samd10d14au + +# Put defined MCU peripherals here (in alphabetical order) +FEATURES_PROVIDED += periph_adc +FEATURES_PROVIDED += periph_dac +FEATURES_PROVIDED += periph_i2c +FEATURES_PROVIDED += periph_pwm +FEATURES_PROVIDED += periph_rtc +FEATURES_PROVIDED += periph_rtt +FEATURES_PROVIDED += periph_spi +FEATURES_PROVIDED += periph_timer +FEATURES_PROVIDED += periph_uart diff --git a/boards/samd10-xmini/Makefile.include b/boards/samd10-xmini/Makefile.include new file mode 100644 index 0000000000..c40d3e5a0a --- /dev/null +++ b/boards/samd10-xmini/Makefile.include @@ -0,0 +1,4 @@ +# mEDBG does not support faster baudrates +BAUD ?= 57600 + +include $(RIOTMAKE)/boards/sam0.inc.mk diff --git a/boards/samd10-xmini/board.c b/boards/samd10-xmini/board.c new file mode 100644 index 0000000000..501b3e5502 --- /dev/null +++ b/boards/samd10-xmini/board.c @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2020 ML!PA Consulting GmbH + * + * This file is subject to the terms and conditions of the GNU Lesser + * General Public License v2.1. See the file LICENSE in the top level + * directory for more details. + */ + +/** + * @ingroup boards_samd10-xmini + * @{ + * + * @file + * @brief Board specific implementations for the Atmel SAM D10 Xplained + * Mini board + * + * @author Benjamin Valentin + * @} + */ + +#include "board.h" +#include "periph/gpio.h" + +void board_init(void) +{ + /* initialize the on-board LED */ + gpio_init(LED0_PIN, GPIO_OUT); + + /* initialize the on-board button */ + gpio_init(BTN0_PIN, BTN0_MODE); + + /* If the PA24 and PA25 pins are not connected, it is recommended + * to enable a pull-up on PA24 and PA25 through input GPIO mode. + * (those have external pull-ups on the board that would leak current) + */ + gpio_init(GPIO_PIN(PA, 24), GPIO_IN_PU); + gpio_init(GPIO_PIN(PA, 25), GPIO_IN_PU); + + /* initialize the CPU */ + cpu_init(); +} diff --git a/boards/samd10-xmini/dist/openocd.cfg b/boards/samd10-xmini/dist/openocd.cfg new file mode 100644 index 0000000000..5219231a7e --- /dev/null +++ b/boards/samd10-xmini/dist/openocd.cfg @@ -0,0 +1,2 @@ +source [find target/at91samdXX.cfg] +$_TARGETNAME configure -rtos auto diff --git a/boards/samd10-xmini/doc.txt b/boards/samd10-xmini/doc.txt new file mode 100644 index 0000000000..b2ed9cf005 --- /dev/null +++ b/boards/samd10-xmini/doc.txt @@ -0,0 +1,76 @@ +/** +@defgroup boards_samd10-xmini Atmel SAM D10 Xplained Mini +@ingroup boards +@brief Support for the Atmel SAM D10 Xplained Mini board. + +## Overview + +The `SAMD10 Xplained Mini` is an ultra-low cost evaluation board by Atmel +featuring an SoC. The SoC includes a SAMD10 ARM Cortex-M0+ micro- +controller. For programming the MCU comes with 4Kb of RAM and 16Kb of flash +memory. + +The samd10-xmini is available from various hardware vendors for ~8€ (as of +2020 October). + +## Hardware + +![samd10-xmini image](https://www.microchip.com/_ImagedCopy/ATSAMD10-XMINI.jpg) + +### MCU +| MCU | ATSAMD10D14AU | +|:-----------|:--------------------- | +| Family | ARM Cortex-M0+ | +| Vendor | Atmel | +| RAM | 4 kiB | +| Flash | 16 kiB | +| Frequency | up to 48 MHz | +| FPU | no | +| Timers | 3 (2 x 16-bit, 1 x 24-bit) | +| ADCs | 1x 10-bit (10 channels) | +| DACs | 1x 10-bit (1 channel) | +| UARTs | max 3 (shared with SPI and I2C) | +| SPIs | max 3 (see UART) | +| I2Cs | max 3 (see UART) | +| Vcc | 1.62V - 3.63V | +| Datasheet | [Datasheet](http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-42242-SAM-D10_Datasheet.pdf) | +| Board Manual | [Board Manual](http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-42387-ATSAMD10-Xplain-Mini_User-Guide.pdf) | + +### User Interface + +1 User button and 1 LED: + +| Device | PIN | +|:------ |:---- | +| LED0 | PA09 | +| SW0 | PA25 | + +## Flashing the device + +Connect the device to your Micro-USB cable using the port labeled as *DEBUG +USB*. + +The standard method for flashing RIOT to the samd10-xmini is using EDBG. + +On Linux you will have to add a **udev** rule for hidraw, like +``` +echo 'KERNEL=="hidraw*", SUBSYSTEM=="hidraw", MODE="0664", GROUP="plugdev"' \ + | sudo tee -a /etc/udev/rules.d/99-usb.rules +sudo service udev restart +``` + +Then you can flash the device as usual + +``` +make BOARD=samd10-xmini flash +``` + +## Known Issues / Problems + +### I2C + +The I2C pins on the board do not have any pull-ups connected to them. +That means that running e.g. `i2c_scan` without any I2C slaves connected +will run into timeouts. + + */ diff --git a/boards/samd10-xmini/include/board.h b/boards/samd10-xmini/include/board.h new file mode 100644 index 0000000000..f4577d1480 --- /dev/null +++ b/boards/samd10-xmini/include/board.h @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2020 ML!PA Consulting GmbH + * + * This file is subject to the terms and conditions of the GNU Lesser + * General Public License v2.1. See the file LICENSE in the top level + * directory for more details. + */ + +/** + * @ingroup boards_samd10-xmini + * @{ + * + * @file + * @brief Board specific definitions for the Atmel SAM D10 Xplained + * Mini board + * + * @author Benjamin Valentin + */ + +#ifndef BOARD_H +#define BOARD_H + +#include "cpu.h" +#include "periph_conf.h" +#include "periph_cpu.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @name Default Baudrate for stdio + * mEDBG does not support 115200 baud. + * @{ + */ +#ifndef STDIO_UART_BAUDRATE +#define STDIO_UART_BAUDRATE (57600) +#endif +/** @} */ + +/** + * @name LED pin definitions and handlers + * @{ + */ +#define LED0_PIN GPIO_PIN(PA, 9) + +#define LED_PORT PORT->Group[PA] +#define LED0_MASK (1 << 9) + +#define LED0_ON (LED_PORT.OUTSET.reg = LED0_MASK) +#define LED0_OFF (LED_PORT.OUTCLR.reg = LED0_MASK) +#define LED0_TOGGLE (LED_PORT.OUTTGL.reg = LED0_MASK) +/** @} */ + +/** + * @name SW0 (Button) pin definitions + * @{ + */ +#define BTN0_PORT PORT->Group[PA] +#define BTN0_PIN GPIO_PIN(PA, 25) +#define BTN0_MODE GPIO_IN_PU +/** @} */ + +/** + * @brief Initialize board specific hardware, including clock, LEDs and std-IO + */ +void board_init(void); + +#ifdef __cplusplus +} +#endif + +#endif /* BOARD_H */ +/** @} */ diff --git a/boards/samd10-xmini/include/gpio_params.h b/boards/samd10-xmini/include/gpio_params.h new file mode 100644 index 0000000000..14e4c18db1 --- /dev/null +++ b/boards/samd10-xmini/include/gpio_params.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2020 ML!PA Consulting GmbH + * + * This file is subject to the terms and conditions of the GNU Lesser + * General Public License v2.1. See the file LICENSE in the top level + * directory for more details. + */ + +/** + * @ingroup boards_samd10-xmini + * @{ + * + * @file + * @brief Board specific configuration of direct mapped GPIOs + * + * @author Benjamin Valentin + */ + +#ifndef GPIO_PARAMS_H +#define GPIO_PARAMS_H + +#include "board.h" +#include "saul/periph.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @brief GPIO pin configuration + */ +static const saul_gpio_params_t saul_gpio_params[] = +{ + { + .name = "LED(orange)", + .pin = LED0_PIN, + .mode = GPIO_OUT + }, + { + .name = "Button(SW0)", + .pin = BTN0_PIN, + .mode = BTN0_MODE, + .flags= SAUL_GPIO_INVERTED, + }, +}; + +#ifdef __cplusplus +} +#endif + +#endif /* GPIO_PARAMS_H */ +/** @} */ diff --git a/boards/samd10-xmini/include/periph_conf.h b/boards/samd10-xmini/include/periph_conf.h new file mode 100644 index 0000000000..f508e77621 --- /dev/null +++ b/boards/samd10-xmini/include/periph_conf.h @@ -0,0 +1,264 @@ +/* + * Copyright (C) 2020 ML!PA Consulting GmbH + * + * This file is subject to the terms and conditions of the GNU Lesser + * General Public License v2.1. See the file LICENSE in the top level + * directory for more details. + */ + +/** + * @ingroup boards_samd10-xmini + * @{ + * + * @file + * @brief Configuration of CPU peripherals for the Atmel SAM D10 Xplained + * Mini board + * + * @author Benjamin Valentin + */ + +#ifndef PERIPH_CONF_H +#define PERIPH_CONF_H + +#include + +#include "cpu.h" +#include "periph_cpu.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @name External oscillator and clock configuration + * + * There are three choices for selection of CORECLOCK: + * + * - usage of the 48 MHz DFLL fed by external oscillator running at 32 kHz + * - usage of the PLL fed by the internal 8MHz oscillator divided by 8 + * - usage of the internal 8MHz oscillator directly, divided by N if needed + * + * + * The PLL option allows for the usage of a wider frequency range and a more + * stable clock with less jitter. This is why this option is default. + * + * The target frequency is computed from the PLL multiplier and the PLL divisor. + * Use the following formula to compute your values: + * + * CORECLOCK = ((PLL_MUL + 1) * 1MHz) / PLL_DIV + * + * NOTE: The PLL circuit does not run with less than 32MHz while the maximum PLL + * frequency is 96MHz. So PLL_MULL must be between 31 and 95! + * + * + * The internal Oscillator used directly can lead to a slightly better power + * efficiency to the cost of a less stable clock. Use this option when you know + * what you are doing! The actual core frequency is adjusted as follows: + * + * CORECLOCK = 8MHz / DIV + * + * NOTE: A core clock frequency below 1MHz is not recommended + * + * @{ + */ +#define CLOCK_USE_PLL (1) +#define CLOCK_USE_XOSC32_DFLL (0) +/* + * 0: use XOSC32K (always 32.768kHz) to clock GCLK2 + * 1: use OSCULP32K factory calibrated (~32.768kHz) to clock GCLK2 + * + * OSCULP32K is factory calibrated to be around 32.768kHz but this values can + * be of by a couple off % points, so prefer XOSC32K as default configuration. + */ +#define GEN2_ULP32K (1) + +#if CLOCK_USE_PLL +/* edit these values to adjust the PLL output frequency */ +#define CLOCK_PLL_MUL (47U) /* must be >= 31 & <= 95 */ +#define CLOCK_PLL_DIV (1U) /* adjust to your needs */ +/* generate the actual used core clock frequency */ +#define CLOCK_CORECLOCK (((CLOCK_PLL_MUL + 1) * 1000000U) / CLOCK_PLL_DIV) +#elif CLOCK_USE_XOSC32_DFLL +/* Settings for 32 kHz external oscillator and 48 MHz DFLL */ +#define CLOCK_CORECLOCK (48000000U) +#define CLOCK_XOSC32K (32768UL) +#define CLOCK_8MHZ (1) +#else +/* edit this value to your needs */ +#define CLOCK_DIV (1U) +/* generate the actual core clock frequency */ +#define CLOCK_CORECLOCK (8000000 / CLOCK_DIV) +#endif +/** @} */ + +/** + * @name Timer peripheral configuration + * @{ + */ +static const tc32_conf_t timer_config[] = { + { /* Timer 0 - System Clock */ + .dev = TC1, + .irq = TC1_IRQn, + .pm_mask = PM_APBCMASK_TC1 | PM_APBCMASK_TC2, + .gclk_ctrl = GCLK_CLKCTRL_ID_TC1_TC2, +#if CLOCK_USE_PLL || CLOCK_USE_XOSC32_DFLL + .gclk_src = SAM0_GCLK_1MHZ, +#else + .gclk_src = SAM0_GCLK_MAIN, +#endif + .flags = TC_CTRLA_MODE_COUNT32, + }, +}; + +#define TIMER_0_MAX_VALUE 0xffffffff + +/* interrupt function name mapping */ +#define TIMER_0_ISR isr_tc1 + +#define TIMER_NUMOF ARRAY_SIZE(timer_config) +/** @} */ + +/** + * @name UART configuration + * @{ + */ +static const uart_conf_t uart_config[] = { + { /* Virtual COM Port */ + .dev = &SERCOM0->USART, + .rx_pin = GPIO_PIN(PA, 11), + .tx_pin = GPIO_PIN(PA, 10), +#ifdef MODULE_PERIPH_UART_HW_FC + .rts_pin = GPIO_UNDEF, + .cts_pin = GPIO_UNDEF, +#endif + .mux = GPIO_MUX_C, + .rx_pad = UART_PAD_RX_3, + .tx_pad = UART_PAD_TX_2, + .flags = UART_FLAG_NONE, + .gclk_src = SAM0_GCLK_MAIN, + }, +}; + +/* interrupt function name mapping */ +#define UART_0_ISR isr_sercom0 + +#define UART_NUMOF ARRAY_SIZE(uart_config) +/** @} */ + +/** + * @name PWM configuration + * @{ + */ +#define PWM_0_EN 1 + +#if PWM_0_EN +/* PWM0 channels */ +static const pwm_conf_chan_t pwm_chan0_config[] = { + /* GPIO pin, MUX value, TCC channel */ + { GPIO_PIN(PA, 17), GPIO_MUX_F, 7 }, + { GPIO_PIN(PA, 22), GPIO_MUX_F, 4 }, + { GPIO_PIN(PA, 23), GPIO_MUX_F, 5 }, + { GPIO_PIN(PA, 24), GPIO_MUX_E, 2 }, +}; +#endif + +/* PWM device configuration */ +static const pwm_conf_t pwm_config[] = { +#if PWM_0_EN + {TCC_CONFIG(TCC0), pwm_chan0_config, ARRAY_SIZE(pwm_chan0_config), SAM0_GCLK_MAIN}, +#endif +}; + +/* number of devices that are actually defined */ +#define PWM_NUMOF ARRAY_SIZE(pwm_config) +/** @} */ + +/** + * @name SPI configuration + * @{ + */ +static const spi_conf_t spi_config[] = { + { /* SPI header */ + .dev = &SERCOM1->SPI, + .miso_pin = GPIO_PIN(PA, 24), + .mosi_pin = GPIO_PIN(PA, 22), + .clk_pin = GPIO_PIN(PA, 9), + .miso_mux = GPIO_MUX_C, + .mosi_mux = GPIO_MUX_C, + .clk_mux = GPIO_MUX_C, + .miso_pad = SPI_PAD_MISO_2, + .mosi_pad = SPI_PAD_MOSI_0_SCK_3, + .gclk_src = SAM0_GCLK_MAIN, + }, +}; + +#define SPI_NUMOF ARRAY_SIZE(spi_config) +/** @} */ + +/** + * @name I2C configuration + * @{ + */ +static const i2c_conf_t i2c_config[] = { + { + .dev = &(SERCOM2->I2CM), + .speed = I2C_SPEED_NORMAL, + .scl_pin = GPIO_PIN(PA, 15), + .sda_pin = GPIO_PIN(PA, 14), + .mux = GPIO_MUX_D, + .gclk_src = SAM0_GCLK_MAIN, + .flags = I2C_FLAG_NONE + } +}; +#define I2C_NUMOF ARRAY_SIZE(i2c_config) +/** @} */ + +/** + * @name RTT configuration + * @{ + */ +#ifndef RTT_FREQUENCY +#define RTT_FREQUENCY (32768U) /* in Hz. For changes see `rtt.c` */ +#endif +/** @} */ + +/** + * @name ADC Configuration + * @{ + */ + +/* ADC Default values */ +#define ADC_PRESCALER ADC_CTRLB_PRESCALER_DIV512 + +#define ADC_NEG_INPUT ADC_INPUTCTRL_MUXNEG_GND +#define ADC_GAIN_FACTOR_DEFAULT ADC_INPUTCTRL_GAIN_1X +#define ADC_REF_DEFAULT ADC_REFCTRL_REFSEL_INT1V + +static const adc_conf_chan_t adc_channels[] = { + /* port, pin, muxpos */ + {GPIO_PIN(PA, 2), ADC_INPUTCTRL_MUXPOS_PIN0}, + {GPIO_PIN(PA, 3), ADC_INPUTCTRL_MUXPOS_PIN1}, + {GPIO_PIN(PA, 4), ADC_INPUTCTRL_MUXPOS_PIN2}, + {GPIO_PIN(PA, 5), ADC_INPUTCTRL_MUXPOS_PIN3}, + {GPIO_PIN(PA, 6), ADC_INPUTCTRL_MUXPOS_PIN4}, + {GPIO_PIN(PA, 7), ADC_INPUTCTRL_MUXPOS_PIN5}, +}; + +#define ADC_NUMOF ARRAY_SIZE(adc_channels) +/** @} */ + +/** + * @name DAC configuration + * @{ + */ +#define DAC_CLOCK SAM0_GCLK_1MHZ + /* use Vcc as reference voltage */ +#define DAC_VREF DAC_CTRLB_REFSEL_AVCC +/** @} */ + +#ifdef __cplusplus +} +#endif + +#endif /* PERIPH_CONF_H */ +/** @} */