boards/nucleo-g070rb: add support

boards/nucleo-g070rb/Kconfig

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+# Copyright (c) 2020 Inria
+#
+# 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 "nucleo-g070rb" if BOARD_NUCLEO_G070RB
+
+config BOARD_NUCLEO_G070RB
+    bool
+    default y
+    select BOARD_COMMON_NUCLEO64
+    select CPU_MODEL_STM32G070RB
+
+    # Put defined MCU peripherals here (in alphabetical order)
+    select HAS_PERIPH_I2C
+    select HAS_PERIPH_SPI
+    select HAS_PERIPH_TIMER
+    select HAS_PERIPH_UART
+
+    # Put other features for this board (in alphabetical order)
+    select HAS_RIOTBOOT
+
+source "$(RIOTBOARD)/common/nucleo64/Kconfig"

boards/nucleo-g070rb/Makefile

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+MODULE = board
+DIRS = $(RIOTBOARD)/common/nucleo
+
+include $(RIOTBASE)/Makefile.base

boards/nucleo-g070rb/Makefile.dep

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+include $(RIOTBOARD)/common/nucleo/Makefile.dep

boards/nucleo-g070rb/Makefile.features

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+CPU = stm32
+CPU_MODEL = stm32g070rb
+
+# Put defined MCU peripherals here (in alphabetical order)
+FEATURES_PROVIDED += periph_i2c
+FEATURES_PROVIDED += periph_spi
+FEATURES_PROVIDED += periph_timer
+FEATURES_PROVIDED += periph_uart
+
+# Put other features for this board (in alphabetical order)
+FEATURES_PROVIDED += riotboot
+
+# load the common Makefile.features for Nucleo boards
+include $(RIOTBOARD)/common/nucleo64/Makefile.features

boards/nucleo-g070rb/Makefile.include

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+# load the common Makefile.include for Nucleo boards
+include $(RIOTBOARD)/common/nucleo64/Makefile.include

boards/nucleo-g070rb/doc.txt

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+/**
+@defgroup    boards_nucleo-g070rb STM32 Nucleo-G070RB
+@ingroup     boards_common_nucleo64
+@brief       Support for the STM32 Nucleo-G070RB
+ */

boards/nucleo-g070rb/include/periph_conf.h

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+/*
+ * Copyright (C) 2020 Inria
+ *
+ * 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_nucleo-g070rb
+ * @{
+ *
+ * @file
+ * @brief       Peripheral MCU configuration for the nucleo-g070rb board
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ */
+
+#ifndef PERIPH_CONF_H
+#define PERIPH_CONF_H
+
+#include "periph_cpu.h"
+#include "g0/cfg_clock_default.h"
+#include "cfg_i2c1_pb8_pb9.h"
+#include "cfg_rtt_default.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name    Timer configuration
+ * @{
+ */
+static const timer_conf_t timer_config[] = {
+    {
+        .dev      = TIM3,
+        .max      = 0x0000ffff,
+        .rcc_mask = RCC_APBENR1_TIM3EN,
+        .bus      = APB1,
+        .irqn     = TIM3_IRQn
+    }
+};
+
+#define TIMER_0_ISR         isr_tim3
+
+#define TIMER_NUMOF         ARRAY_SIZE(timer_config)
+/** @} */
+
+/**
+ * @name    UART configuration
+ * @{
+ */
+static const uart_conf_t uart_config[] = {
+    {
+        .dev        = USART2,
+        .rcc_mask   = RCC_APBENR1_USART2EN,
+        .rx_pin     = GPIO_PIN(PORT_A, 3),
+        .tx_pin     = GPIO_PIN(PORT_A, 2),
+        .rx_af      = GPIO_AF1,
+        .tx_af      = GPIO_AF1,
+        .bus        = APB1,
+        .irqn       = USART2_IRQn,
+    },
+    {   /* Arduino pinout on D0/D1 */
+        .dev        = USART1,
+        .rcc_mask   = RCC_APBENR2_USART1EN,
+        .rx_pin     = GPIO_PIN(PORT_C, 5),
+        .tx_pin     = GPIO_PIN(PORT_C, 4),
+        .rx_af      = GPIO_AF1,
+        .tx_af      = GPIO_AF1,
+        .bus        = APB12,
+        .irqn       = USART1_IRQn,
+    },
+};
+
+#define UART_0_ISR          (isr_usart2)
+#define UART_1_ISR          (isr_usart1)
+
+#define UART_NUMOF          ARRAY_SIZE(uart_config)
+/** @} */
+
+/**
+ * @name   SPI configuration
+ *
+ * @note    The spi_divtable is auto-generated from
+ *          `cpu/stm32_common/dist/spi_divtable/spi_divtable.c`
+ * @{
+ */
+static const uint8_t spi_divtable[2][5] = {
+    {       /* for 64000000Hz */
+        7,  /* -> 250000Hz */
+        6,  /* -> 500000Hz */
+        5,  /* -> 1000000Hz */
+        3,  /* -> 4000000Hz */
+        2   /* -> 8000000Hz */
+    },
+    {       /* for 64000000Hz */
+        7,  /* -> 250000Hz */
+        6,  /* -> 500000Hz */
+        5,  /* -> 1000000Hz */
+        3,  /* -> 4000000Hz */
+        2   /* -> 8000000Hz */
+    },
+};
+
+static const spi_conf_t spi_config[] = {
+    {
+        .dev            = SPI1,
+        .mosi_pin       = GPIO_PIN(PORT_A, 7),  /* Arduino D11 */
+        .miso_pin       = GPIO_PIN(PORT_A, 6),  /* Arduino D12 */
+        .sclk_pin       = GPIO_PIN(PORT_A, 5),  /* Arduino D13 */
+        .cs_pin         = GPIO_UNDEF,
+        .mosi_af        = GPIO_AF0,
+        .miso_af        = GPIO_AF0,
+        .sclk_af        = GPIO_AF0,
+        .cs_af          = GPIO_AF0,
+        .rccmask        = RCC_APBENR2_SPI1EN,
+        .apbbus         = APB12,
+    },
+};
+
+#define SPI_NUMOF           ARRAY_SIZE(spi_config)
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PERIPH_CONF_H */
+/** @} */