diff options
author | Gregory Nutt <gnutt@nuttx.org> | 2013-06-20 13:50:16 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2013-06-20 13:50:16 -0600 |
commit | 39bd870cc0447b7453b690f647ca26eb69ebbfd1 (patch) | |
tree | cf4d27509dd3b635ca1d19cce40a4d252a043809 | |
parent | e262f1de51fe3a429dabe9bc143fdb95ca8e45c9 (diff) | |
download | px4-nuttx-39bd870cc0447b7453b690f647ca26eb69ebbfd1.tar.gz px4-nuttx-39bd870cc0447b7453b690f647ca26eb69ebbfd1.tar.bz2 px4-nuttx-39bd870cc0447b7453b690f647ca26eb69ebbfd1.zip |
Add framework for managing SPI-related discretes on the Freedom KL25Z board.
-rw-r--r-- | nuttx/ChangeLog | 4 | ||||
-rw-r--r-- | nuttx/TODO | 22 | ||||
-rwxr-xr-x | nuttx/arch/arm/src/kl/kl_spi.c | 5 | ||||
-rw-r--r-- | nuttx/arch/arm/src/kl/kl_spi.h | 4 | ||||
-rw-r--r-- | nuttx/configs/freedom-kl25z/src/Makefile | 8 | ||||
-rw-r--r-- | nuttx/configs/freedom-kl25z/src/kl_boardinitialize.c | 12 | ||||
-rw-r--r-- | nuttx/configs/freedom-kl25z/src/kl_spi.c | 237 |
7 files changed, 274 insertions, 18 deletions
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog index f42e5495f..402f80a29 100644 --- a/nuttx/ChangeLog +++ b/nuttx/ChangeLog @@ -5015,4 +5015,6 @@ * arm/src/sam34/chip/sam4l_pdca.h: Add SAM4L PDCA register definition file; also renamed sam_dmac.* files to sam3u_dmac.* to identify them as SAM4U/4S only files (2013-6-19). - + * configs/freedom-lk25z/src/kl_spi.c: Add the framework for + controlling SPI-related discrete inputs and outputs. Taken from + work by Alan Carvalho de Assis (2013-6-20). diff --git a/nuttx/TODO b/nuttx/TODO index e59103d7f..28bd90e84 100644 --- a/nuttx/TODO +++ b/nuttx/TODO @@ -1,4 +1,4 @@ -NuttX TODO List (Last updated May 29, 2013) +NuttX TODO List (Last updated June 20, 2013) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This file summarizes known NuttX bugs, limitations, inconsistencies with @@ -903,10 +903,22 @@ o Libraries (libc/) Status: Open Priority: Low - Title: FERROR() AND CLEARERR() - Description: Not implemented: ferror() and clearerr() - Status: Open - Priority: Low + Title: FERROR() + Description: ferror(), feof(), and clearerror() are present, but the + implementation of ferror() is limited. There are flags in the + stream structure to indicate EOF and error conditions but nothing + in the code currently sets the error indication. This is a + trivial change to many interfaces and has not yet been done. + Instead, for now, ferror() is equivalent to !feof(). If an + interface can failure because of an error or and EOF and you + only want to distinguish between an error and the EOF then + this ferror() will work. However, if no error is reported then + this ferror() cannot tell you if an error has occurred or not. + Status: Open + Priority: Meidum to Low: Some applications use ferror() and not the + return value to determine if an error occurred. Those + applications will fail with this limited implementation of + ferror(). Title: CONCURRENT STREAM READ/WRITE Description: NuttX only supports a single file pointer so reads and writes diff --git a/nuttx/arch/arm/src/kl/kl_spi.c b/nuttx/arch/arm/src/kl/kl_spi.c index e73fa8403..4573e4a07 100755 --- a/nuttx/arch/arm/src/kl/kl_spi.c +++ b/nuttx/arch/arm/src/kl/kl_spi.c @@ -311,7 +311,6 @@ static uint32_t spi_setfrequency(FAR struct spi_dev_s *dev, uint32_t frequency) /* Check if the requested frequence is the same as the frequency selection */ - DEBUGASSERT(priv && frequency <= SPI_CLOCK / 2); #ifndef CONFIG_SPI_OWNBUS if (priv->frequency == frequency) { @@ -637,7 +636,7 @@ static void spi_recvblock(FAR struct spi_dev_s *dev, FAR void *rxbuffer, size_t ****************************************************************************/ /**************************************************************************** - * Name: kl_spiinitialize + * Name: up_spiinitialize * * Description: * Initialize the selected SPI port. @@ -650,7 +649,7 @@ static void spi_recvblock(FAR struct spi_dev_s *dev, FAR void *rxbuffer, size_t * ****************************************************************************/ -FAR struct spi_dev_s *kl_spiinitialize(int port) +FAR struct spi_dev_s *up_spiinitialize(int port) { FAR struct kl_spidev_s *priv; uint32_t regval; diff --git a/nuttx/arch/arm/src/kl/kl_spi.h b/nuttx/arch/arm/src/kl/kl_spi.h index 7b93a444d..659ee8f5f 100644 --- a/nuttx/arch/arm/src/kl/kl_spi.h +++ b/nuttx/arch/arm/src/kl/kl_spi.h @@ -67,7 +67,7 @@ extern "C" { ************************************************************************************/ /**************************************************************************** - * Name: kl_spiinitialize + * Name: up_spiinitialize * * Description: * Initialize the selected SPI port. @@ -81,7 +81,7 @@ extern "C" { ****************************************************************************/ struct spi_dev_s; -FAR struct spi_dev_s *kl_spiinitialize(int port); +FAR struct spi_dev_s *up_spiinitialize(int port); /************************************************************************************ * Name: kl_spi[n]select, kl_spi[n]status, and kl_spi[n]cmddata diff --git a/nuttx/configs/freedom-kl25z/src/Makefile b/nuttx/configs/freedom-kl25z/src/Makefile index 68db441bc..5164f9310 100644 --- a/nuttx/configs/freedom-kl25z/src/Makefile +++ b/nuttx/configs/freedom-kl25z/src/Makefile @@ -46,6 +46,10 @@ ifeq ($(CONFIG_KL_TSI),y) CSRCS += kl_tsi.c endif +ifeq ($(CONFIG_KL_SPI0),y) +CSRCS += kl_spi.c +endif + ifeq ($(CONFIG_HAVE_CXX),y) CSRCS += kl_cxxinitialize.c endif @@ -54,8 +58,8 @@ ifeq ($(CONFIG_ARCH_LEDS),y) CSRCS += kl_led.c endif -ifeq ($(CONFIG_NUC1XX_USBD),y) -CSRCS += kl_usbd.c +ifeq ($(CONFIG_KL_USBOTG),y) +CSRCS += kl_usb.c endif ifeq ($(CONFIG_PWM),y) diff --git a/nuttx/configs/freedom-kl25z/src/kl_boardinitialize.c b/nuttx/configs/freedom-kl25z/src/kl_boardinitialize.c index eff2873b1..378de8ea4 100644 --- a/nuttx/configs/freedom-kl25z/src/kl_boardinitialize.c +++ b/nuttx/configs/freedom-kl25z/src/kl_boardinitialize.c @@ -75,19 +75,20 @@ void kl_boardinitialize(void) * kl_spiinitialize() has been brought into the link. */ -#if defined(CONFIG_NUC1XX_SPI1) || defined(CONFIG_NUC1XX_SPI2) || defined(CONFIG_NUC1XX_SPI3) +#if defined(CONFIG_KL_SPI0) || defined(CONFIG_KL_SPI1) if (kl_spiinitialize) { kl_spiinitialize(); } #endif - /* Initialize USB if the 1) USB device controller is in the configuration and 2) - * disabled, and 3) the weak function kl_usbinitialize() has been brought - * into the build. Presumeably either CONFIG_USBDEV is also selected. + /* Initialize USB if the 1) USB device controller is in the configuration + * and 2) disabled, and 3) the weak function kl_usbinitialize() has been + * brought into the build. Presumeably either CONFIG_USBHOST or + * CONFIG_USBDEV is also selected. */ -#ifdef CONFIG_NUC1XX_USB +#ifdef CONFIG_KL_USBOTG if (kl_usbinitialize) { kl_usbinitialize(); @@ -100,6 +101,7 @@ void kl_boardinitialize(void) kl_ledinit(); #endif } + /**************************************************************************** * Name: board_initialize * diff --git a/nuttx/configs/freedom-kl25z/src/kl_spi.c b/nuttx/configs/freedom-kl25z/src/kl_spi.c new file mode 100644 index 000000000..4d927d89b --- /dev/null +++ b/nuttx/configs/freedom-kl25z/src/kl_spi.c @@ -0,0 +1,237 @@ +/**************************************************************************** + * configs/freedom-kl25z/src/kl_spi.c + * + * Copyright (C) 2013 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdbool.h> +#include <debug.h> +#include <errno.h> + +#include <nuttx/spi.h> + +#include "kl_gpio.h" +#include "kl_spi.h" +#include "freedom-kl25z.h" + +#if defined(CONFIG_KL_SPI0) || defined(CONFIG_KL_SPI1) + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Enables debug output from this file (needs CONFIG_DEBUG too) */ + +#undef SPI_DEBUG /* Define to enable debug */ +#undef SPI_VERBOSE /* Define to enable verbose debug */ + +#ifdef SPI_DEBUG +# define spidbg lldbg +# ifdef SPI_VERBOSE +# define spivdbg lldbg +# else +# define spivdbg(x...) +# endif +#else +# undef SPI_VERBOSE +# define spidbg(x...) +# define spivdbg(x...) +#endif + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: kl_spiinitialize + * + * Description: + * Called to configure SPI chip select GPIO pins for the FRDM-KL25Z board. + * + ****************************************************************************/ + +void weak_function kl_spiinitialize(void) +{ + /* Configure SPI0 chip selects */ + +#ifdef CONFIG_KL_SPI0 +#endif + + /* Configure SPI1 chip selects */ + +#ifdef CONFIG_KL_SPI1 +#endif +} + +/**************************************************************************** + * Name: kl_spi[n]select, kl_spi[n]status, and kl_spi[n]cmddata + * + * Description: + * These external functions must be provided by board-specific logic. They + * are implementations of the select, status, and cmddata methods of the SPI + * interface defined by struct spi_ops_s (see include/nuttx/spi.h). All + * other methods including up_spiinitialize()) are provided by common + * Kinetis logic. To use this common SPI logic on your board: + * + * 1. Provide logic in kl_boardinitialize() to configure SPI chip select + * pins. + * 2. Provide kl_spi[n]select() and kl_spi[n]status() functions + * in your board-specific logic. These functions will perform chip + * selection and status operations using GPIOs in the way your board + * is configured. + * 2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide + * kl_spi[n]cmddata() functions in your board-specific logic. These + * functions will perform cmd/data selection operations using GPIOs in + * the way your board is configured. + * 3. Add a call to up_spiinitialize() in your low level application + * initialization logic + * 4. The handle returned by up_spiinitialize() may then be used to bind + * the SPI driver to higher level logic (e.g., calling + * mmcsd_spislotinitialize(), for example, will bind the SPI driver to + * the SPI MMC/SD driver). + * + ****************************************************************************/ +/**************************************************************************** + * Name: kl_spi[n]select + * + * Description: + * PIO chip select pins may be programmed by the board specific logic in + * one of two different ways. First, the pins may be programmed as SPI + * peripherals. In that case, the pins are completely controlled by the + * SPI driver. This method still needs to be provided, but it may be only + * a stub. + * + * An alternative way to program the PIO chip select pins is as a normal + * GPIO output. In that case, the automatic control of the CS pins is + * bypassed and this function must provide control of the chip select. + * NOTE: In this case, the GPIO output pin does *not* have to be the + * same as the NPCS pin normal associated with the chip select number. + * + * Input Parameters: + * devid - Identifies the (logical) device + * selected - TRUE:Select the device, FALSE:De-select the device + * + * Returned Values: + * None + * + ****************************************************************************/ + +#ifdef CONFIG_KL_SPI0 +void kl_spi0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, + bool selected) +{ + spivdbg("devid: %d CS: %s\n", + (int)devid, selected ? "assert" : "de-assert"); +} +#endif + +#ifdef CONFIG_KL_SPI1 +void kl_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, + bool selected) +{ + spivdbg("devid: %d CS: %s\n", + (int)devid, selected ? "assert" : "de-assert"); +} +#endif + +/**************************************************************************** + * Name: kl_spi[n]status + * + * Description: + * Return status information associated with the SPI device. + * + * Input Parameters: + * devid - Identifies the (logical) device + * + * Returned Values: + * Bit-encoded SPI status (see include/nuttx/spi.h. + * + ****************************************************************************/ + +#ifdef CONFIG_KL_SPI0 +uint8_t kl_spi0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid) +{ + return 0; +} +#endif + +#ifdef CONFIG_KL_SPI1 +uint8_t kl_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid) +{ + return 0; +} +#endif + +/**************************************************************************** + * Name: kl_spi[n]cmddata + * + * Description: + * Some SPI interfaces, particularly with LCDs, and an auxilary 9th data + * input that determines where the other 8 data bits represent command or + * data. These interfaces control that CMD/DATA GPIO output + * + * Input Parameters: + * devid - Identifies the (logical) device + * cmd - Determines where command or data should be selected. + * + * Returned Values: + * Bit-encoded SPI status (see include/nuttx/spi.h. + * + ****************************************************************************/ + +#ifdef CONFIG_SPI_CMDDATA +#ifdef CONFIG_KL_SPI0 +int kl_spi0cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd) +{ + return 0; +} +#endif + +#ifdef CONFIG_KL_SPI1 +int kl_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd) +{ + return 0; +} +#endif +#endif + +#endif /* CONFIG_KL_SPI */ |