diff options
Diffstat (limited to 'libmaple/spi.c')
| -rw-r--r-- | libmaple/spi.c | 84 |
1 files changed, 4 insertions, 80 deletions
diff --git a/libmaple/spi.c b/libmaple/spi.c index 1c68529..194a82e 100644 --- a/libmaple/spi.c +++ b/libmaple/spi.c @@ -1,6 +1,7 @@ /****************************************************************************** * The MIT License * + * Copyright (c) 2011, 2012 LeafLabs, LLC. * Copyright (c) 2010 Perry Hung. * * Permission is hereby granted, free of charge, to any person @@ -25,48 +26,18 @@ *****************************************************************************/ /** - * @file spi.c + * @file libmaple/spi.c * @author Marti Bolivar <mbolivar@leaflabs.com> * @brief Serial Peripheral Interface (SPI) support. * Currently, there is no Integrated Interchip Sound (I2S) support. */ -#include "spi.h" -#include "bitband.h" +#include <libmaple/spi.h> +#include <libmaple/bitband.h> static void spi_reconfigure(spi_dev *dev, uint32 cr1_config); /* - * SPI devices - */ - -static spi_dev spi1 = { - .regs = SPI1_BASE, - .clk_id = RCC_SPI1, - .irq_num = NVIC_SPI1, -}; -/** SPI device 1 */ -spi_dev *SPI1 = &spi1; - -static spi_dev spi2 = { - .regs = SPI2_BASE, - .clk_id = RCC_SPI2, - .irq_num = NVIC_SPI2, -}; -/** SPI device 2 */ -spi_dev *SPI2 = &spi2; - -#ifdef STM32_HIGH_DENSITY -static spi_dev spi3 = { - .regs = SPI3_BASE, - .clk_id = RCC_SPI3, - .irq_num = NVIC_SPI3, -}; -/** SPI device 3 */ -spi_dev *SPI3 = &spi3; -#endif - -/* * SPI convenience routines */ @@ -80,37 +51,6 @@ void spi_init(spi_dev *dev) { } /** - * @brief Configure GPIO bit modes for use as a SPI port's pins. - * @param as_master If true, configure bits for use as a bus master. - * Otherwise, configure bits for use as slave. - * @param nss_dev NSS pin's GPIO device - * @param comm_dev SCK, MISO, MOSI pins' GPIO device - * @param nss_bit NSS pin's GPIO bit on nss_dev - * @param sck_bit SCK pin's GPIO bit on comm_dev - * @param miso_bit MISO pin's GPIO bit on comm_dev - * @param mosi_bit MOSI pin's GPIO bit on comm_dev - */ -void spi_gpio_cfg(uint8 as_master, - gpio_dev *nss_dev, - uint8 nss_bit, - gpio_dev *comm_dev, - uint8 sck_bit, - uint8 miso_bit, - uint8 mosi_bit) { - if (as_master) { - gpio_set_mode(nss_dev, nss_bit, GPIO_AF_OUTPUT_PP); - gpio_set_mode(comm_dev, sck_bit, GPIO_AF_OUTPUT_PP); - gpio_set_mode(comm_dev, miso_bit, GPIO_INPUT_FLOATING); - gpio_set_mode(comm_dev, mosi_bit, GPIO_AF_OUTPUT_PP); - } else { - gpio_set_mode(nss_dev, nss_bit, GPIO_INPUT_FLOATING); - gpio_set_mode(comm_dev, sck_bit, GPIO_INPUT_FLOATING); - gpio_set_mode(comm_dev, miso_bit, GPIO_AF_OUTPUT_PP); - gpio_set_mode(comm_dev, mosi_bit, GPIO_INPUT_FLOATING); - } -} - -/** * @brief Configure and enable a SPI device as bus master. * * The device's peripheral will be disabled before being reconfigured. @@ -165,18 +105,6 @@ uint32 spi_tx(spi_dev *dev, const void *buf, uint32 len) { } /** - * @brief Call a function on each SPI port - * @param fn Function to call. - */ -void spi_foreach(void (*fn)(spi_dev*)) { - fn(SPI1); - fn(SPI2); -#ifdef STM32_HIGH_DENSITY - fn(SPI3); -#endif -} - -/** * @brief Enable a SPI peripheral * @param dev Device to enable */ @@ -234,7 +162,3 @@ static void spi_reconfigure(spi_dev *dev, uint32 cr1_config) { dev->regs->CR1 = cr1_config; spi_peripheral_enable(dev); } - -/* - * IRQ handlers (TODO) - */ |