examples: add CORDIC example
This commit is contained in:
raiden00pl
Alan Carvalho de Assis
parent
a0fbd104fa
commit
e21330df53
@ -209,6 +209,10 @@ Attempts to keep the system busy by passing data through a pipe in loop back
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mode. This may be useful if you are trying run down other problems that you
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mode. This may be useful if you are trying run down other problems that you
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think might only occur when the system is very busy.
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think might only occur when the system is very busy.
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## `cordic`
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A simple test of the CORDIC character driver.
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## `dac` Write to DAC
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## `dac` Write to DAC
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This is a tool for writing values to DAC device.
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This is a tool for writing values to DAC device.
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35
examples/cordic/Kconfig
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35
examples/cordic/Kconfig
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@ -0,0 +1,35 @@
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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config EXAMPLES_CORDIC
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tristate "CORDIC example"
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default n
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---help---
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Enable the CORDIC example
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if EXAMPLES_CORDIC
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config EXAMPLES_CORDIC_DEVPATH
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string "CORDIC Device Path"
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default "/dev/cordic0"
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---help---
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The device path
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config EXAMPLES_CORDIC_PROGNAME
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string "Program name"
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default "cordic"
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---help---
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This is the name of the program that will be used when the NSH ELF
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program is installed.
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config EXAMPLES_CORDIC_PRIORITY
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int "CORDIC task priority"
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default 100
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config EXAMPLES_CORDIC_STACKSIZE
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int "CORDIC stack size"
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default DEFAULT_TASK_STACKSIZE
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endif
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23
examples/cordic/Make.defs
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23
examples/cordic/Make.defs
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@ -0,0 +1,23 @@
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############################################################################
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# apps/examples/cordic/Make.defs
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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ifneq ($(CONFIG_EXAMPLES_CORDIC),)
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CONFIGURED_APPS += $(APPDIR)/examples/cordic
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endif
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34
examples/cordic/Makefile
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34
examples/cordic/Makefile
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############################################################################
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# apps/examples/cordic/Make.defs
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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include $(APPDIR)/Make.defs
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# CORDIC built-in application info
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PROGNAME = $(CONFIG_EXAMPLES_CORDIC_PROGNAME)
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PRIORITY = $(CONFIG_EXAMPLES_CORDIC_PRIORITY)
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STACKSIZE = $(CONFIG_EXAMPLES_CORDIC_STACKSIZE)
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MODULE = $(CONFIG_EXAMPLES_CORDIC)
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# CORDIC Example
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MAINSRC = cordic_main.c
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include $(APPDIR)/Application.mk
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257
examples/cordic/cordic_main.c
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257
examples/cordic/cordic_main.c
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@ -0,0 +1,257 @@
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/****************************************************************************
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* apps/examples/cordic/cordic_main.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <debug.h>
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#include <math.h>
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#include <fixedmath.h>
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#include <nuttx/math/cordic.h>
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#include <nuttx/math/math_ioctl.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef CONFIG_MATH_CORDIC_USE_Q31
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# error Not supported
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#endif
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#ifndef CONFIG_LIBC_FLOATINGPOINT
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# error CONFIG_LIBC_FLOATINGPOINT must be enabled
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* cordic_main
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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struct cordic_calc_s io;
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int fd = 0;
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int ret = OK;
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float arg1f = 0.0f;
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float arg2f = 0.0f;
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float res1f = 0.0f;
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float res2f = 0.0f;
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b16_t arg1b16 = 0;
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b16_t arg2b16 = 0;
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b16_t res1b16 = 0;
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b16_t res2b16 = 0;
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/* Reset data */
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memset(&io, 0, sizeof(struct cordic_calc_s));
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/* Open the CORDIC device */
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fd = open(CONFIG_EXAMPLES_CORDIC_DEVPATH, O_RDWR);
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if (fd < 0)
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{
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printf("ERROR: open %s failed: %d\n",
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CONFIG_EXAMPLES_CORDIC_DEVPATH, errno);
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goto errout;
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}
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/* Get cosine */
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arg1f = 0.05f;
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arg2f = 1.0f;
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io.func = CORDIC_CALC_FUNC_COS;
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io.res2_incl = false;
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io.arg1 = ftoq31(arg1f);
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io.arg2 = ftoq31(arg2f);
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ret = ioctl(fd, MATHIOC_CORDIC_CALC, (unsigned long)((uintptr_t)&io));
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if (ret < 0)
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{
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printf("ERROR: MATHIOC_CORDIC_CALC failed, errno=%d\n", errno);
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}
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res1f = q31tof(io.res1);
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res2f = q31tof(io.res2);
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printf("[float] func=%" PRIu8 " res2_inc=%d "
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"arg1f=%0.5f arg2=%0.5f res1=%0.5f res2=%0.5f\n",
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io.func, io.res2_incl, arg1f, arg2f, res1f, res2f);
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/* Get cosine and sine from single call */
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arg1f = -0.5f;
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arg2f = 1.0f;
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io.func = CORDIC_CALC_FUNC_COS;
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io.res2_incl = true;
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io.arg1 = ftoq31(arg1f);
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io.arg2 = ftoq31(arg2f);
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ret = ioctl(fd, MATHIOC_CORDIC_CALC, (unsigned long)((uintptr_t)&io));
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if (ret < 0)
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{
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printf("ERROR: MATHIOC_CORDIC_CALC failed, errno=%d\n", errno);
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}
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res1f = q31tof(io.res1);
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res2f = q31tof(io.res2);
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printf("[float] func=%" PRIu8 " res2_inc=%d "
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"arg1f=%0.5f arg2=%0.5f res1f=%0.5f res2f=%0.5f\n",
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io.func, io.res2_incl, arg1f, arg2f, res1f, res2f);
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/* Get cosine and sine from single call */
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arg1f = -0.1f;
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arg2f = 1.0f;
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io.func = CORDIC_CALC_FUNC_COS;
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io.res2_incl = true;
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io.arg1 = ftoq31(arg1f);
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io.arg2 = ftoq31(arg2f);
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ret = ioctl(fd, MATHIOC_CORDIC_CALC, (unsigned long)((uintptr_t)&io));
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if (ret < 0)
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{
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printf("ERROR: MATHIOC_CORDIC_CALC failed, errno=%d\n", errno);
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}
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res1f = q31tof(io.res1);
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res2f = q31tof(io.res2);
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printf("[float] func=%" PRIu8 " res2_inc=%d "
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"arg1f=%0.5f arg2=%0.5f res1=%0.5f res2=%0.5f\n",
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io.func, io.res2_incl, arg1f, arg2f, res1f, res2f);
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/* Get cosine and sine from single call */
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arg1f = 0.8f;
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arg2f = 1.0f;
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io.func = CORDIC_CALC_FUNC_COS;
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io.res2_incl = true;
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io.arg1 = ftoq31(arg1f);
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io.arg2 = ftoq31(arg2f);
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ret = ioctl(fd, MATHIOC_CORDIC_CALC, (unsigned long)((uintptr_t)&io));
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if (ret < 0)
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{
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printf("ERROR: MATHIOC_CORDIC_CALC failed, errno=%d\n", errno);
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}
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res1f = q31tof(io.res1);
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res2f = q31tof(io.res2);
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printf("[float] func=%" PRIu8 " res2_inc=%d "
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"arg1f=%0.5f arg2=%0.5f res1=%0.5f res2=%0.5f\n",
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io.func, io.res2_incl, arg1f, arg2f, res1f, res2f);
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/* Get phase and modulus from single call */
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arg1f = -0.5f;
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arg2f = -0.5f;
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io.func = CORDIC_CALC_FUNC_PHASE;
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io.res2_incl = true;
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io.arg1 = ftoq31(arg1f);
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io.arg2 = ftoq31(arg2f);
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ret = ioctl(fd, MATHIOC_CORDIC_CALC, (unsigned long)((uintptr_t)&io));
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if (ret < 0)
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{
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printf("ERROR: MATHIOC_CORDIC_CALC failed, errno=%d\n", errno);
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}
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res1f = q31tof(io.res1);
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res2f = q31tof(io.res2);
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printf("[float] func=%" PRIu8 " res2_inc=%d "
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"arg1f=%0.5f arg2=%0.5f res1f=%0.5f res2f=%0.5f\n",
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io.func, io.res2_incl, arg1f, arg2f, res1f, res2f);
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/* Get cosine and sine from single call (fixed16) */
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arg1b16 = ftob16(-0.5f);
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arg2b16 = ftob16(1.0f);
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io.func = CORDIC_CALC_FUNC_COS;
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io.res2_incl = true;
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io.arg1 = b16toq31(arg1b16);
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io.arg2 = b16toq31(arg2b16);
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ret = ioctl(fd, MATHIOC_CORDIC_CALC, (unsigned long)((uintptr_t)&io));
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if (ret < 0)
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{
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printf("ERROR: MATHIOC_CORDIC_CALC failed, errno=%d\n", errno);
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}
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res1b16 = q31tob16(io.res1);
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res2b16 = q31tob16(io.res2);
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printf("[fixed16] func=%" PRIu8 " res2_inc=%d "
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"arg1f=%0.5f arg2=%0.5f res1=%0.5f res2=%0.5f\n",
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io.func, io.res2_incl, b16tof(arg1b16), b16tof(arg2b16),
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b16tof(res1b16), b16tof(res2b16));
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/* Get phase and modulus from single call (fixed16) */
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arg1b16 = ftob16(-0.5f);
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arg2b16 = ftob16(-0.5f);
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io.func = CORDIC_CALC_FUNC_PHASE;
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io.res2_incl = true;
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io.arg1 = b16toq31(arg1b16);
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io.arg2 = b16toq31(arg2b16);
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ret = ioctl(fd, MATHIOC_CORDIC_CALC, (unsigned long)((uintptr_t)&io));
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if (ret < 0)
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{
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printf("ERROR: MATHIOC_CORDIC_CALC failed, errno=%d\n", errno);
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}
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res1b16 = q31tob16(io.res1);
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res2b16 = q31tob16(io.res2);
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printf("[fxied16] func=%" PRIu8 " res2_inc=%d "
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"arg1f=%0.5f arg2=%0.5f res1=%0.5f res2=%0.5f\n",
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io.func, io.res2_incl, b16tof(arg1b16), b16tof(arg2b16),
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b16tof(res1b16), b16tof(res2b16));
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errout:
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/* Close CORDIC device */
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if (fd > 0)
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{
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close(fd);
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}
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return 0;
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}
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