mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-11 11:35:50 +00:00
13ceab4c3b
Allow the user to use software slave select instead of the hardware pin, in order to free the related GPIO and avoid unwanted SS triggering on the hardware pin. The default SS is still the hardware pin. Signed-off-by: Yaël Boutreux <yael.boutreux@st.com> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/*
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* Copyright (c) 2018 Aleksandr Makarov <aleksandr.o.makarov@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <device.h>
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#include <init.h>
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#include <drivers/pinmux.h>
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#include <sys/sys_io.h>
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#include "pinmux/stm32/pinmux_stm32.h"
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/* pin assignments for STMicroelectronics B-L072Z-LRWAN1 Discovery board */
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static const struct pin_config pinconf[] = {
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#ifdef CONFIG_UART_1
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{STM32_PIN_PA9, STM32L0_PINMUX_FUNC_PA9_USART1_TX},
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{STM32_PIN_PA10, STM32L0_PINMUX_FUNC_PA10_USART1_RX},
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#endif /* CONFIG_UART_1 */
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#ifdef CONFIG_UART_2
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{STM32_PIN_PA2, STM32L0_PINMUX_FUNC_PA2_USART2_TX},
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{STM32_PIN_PA3, STM32L0_PINMUX_FUNC_PA3_USART2_RX},
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#endif /* CONFIG_UART_2 */
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#ifdef CONFIG_SPI_1
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#ifdef CONFIG_SPI_STM32_USE_HW_SS
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{STM32_PIN_PA4, STM32L0_PINMUX_FUNC_PA4_SPI1_NSS},
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#endif /* CONFIG_SPI_STM32_USE_HW_SS */
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{STM32_PIN_PA5, STM32L0_PINMUX_FUNC_PA5_SPI1_SCK},
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{STM32_PIN_PA6, STM32L0_PINMUX_FUNC_PA6_SPI1_MISO},
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{STM32_PIN_PA7, STM32L0_PINMUX_FUNC_PA7_SPI1_MOSI},
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#endif /* CONFIG_SPI_1 */
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#ifdef CONFIG_SPI_2
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#ifdef CONFIG_SPI_STM32_USE_HW_SS
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{STM32_PIN_PB12, STM32L0_PINMUX_FUNC_PB12_SPI2_NSS},
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#endif /* CONFIG_SPI_STM32_USE_HW_SS */
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{STM32_PIN_PB13, STM32L0_PINMUX_FUNC_PB13_SPI2_SCK},
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{STM32_PIN_PB14, STM32L0_PINMUX_FUNC_PB14_SPI2_MISO},
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{STM32_PIN_PB15, STM32L0_PINMUX_FUNC_PB15_SPI2_MOSI},
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#endif /* CONFIG_SPI_2 */
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#ifdef CONFIG_I2C_1
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{STM32_PIN_PB8, STM32L0_PINMUX_FUNC_PB8_I2C1_SCL},
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{STM32_PIN_PB9, STM32L0_PINMUX_FUNC_PB9_I2C1_SDA},
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#endif /* CONFIG_I2C_1*/
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};
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static int pinmux_stm32_init(struct device *port)
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{
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ARG_UNUSED(port);
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stm32_setup_pins(pinconf, ARRAY_SIZE(pinconf));
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return 0;
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}
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SYS_INIT(pinmux_stm32_init, PRE_KERNEL_1,
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CONFIG_PINMUX_STM32_DEVICE_INITIALIZATION_PRIORITY);
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