diff --git a/examples/spislv_test/CMakeLists.txt b/examples/spislv_test/CMakeLists.txt new file mode 100644 index 0000000000..d4406bae99 --- /dev/null +++ b/examples/spislv_test/CMakeLists.txt @@ -0,0 +1,31 @@ +# ############################################################################## +# apps/examples/spislv_test/CMakeLists.txt +# +# Licensed to the Apache Software Foundation (ASF) under one or more contributor +# license agreements. See the NOTICE file distributed with this work for +# additional information regarding copyright ownership. The ASF licenses this +# file to you under the Apache License, Version 2.0 (the "License"); you may not +# use this file except in compliance with the License. You may obtain a copy of +# the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations under +# the License. +# +# ############################################################################## + +if(CONFIG_EXAMPLES_SPISLV) + nuttx_add_application( + NAME + ${CONFIG_EXAMPLES_SPISLV_PROGNAME} + SRCS + spislv_test.c + STACKSIZE + ${CONFIG_EXAMPLES_SPISLV_STACKSIZE} + PRIORITY + ${CONFIG_EXAMPLES_SPISLV_PRIORITY}) +endif() diff --git a/examples/spislv_test/Kconfig b/examples/spislv_test/Kconfig new file mode 100644 index 0000000000..ab273e0aa0 --- /dev/null +++ b/examples/spislv_test/Kconfig @@ -0,0 +1,30 @@ +# +# For a description of the syntax of this configuration file, +# see the file kconfig-language.txt in the NuttX tools repository. +# + +config EXAMPLES_SPISLV + tristate "\"SPI Slave Test\" example" + default n + ---help--- + Enable the "SPI Slave Test" example. + This tool can be used together with the SPI tool to validate communication between two devices. + +if EXAMPLES_SPISLV + +config EXAMPLES_SPISLV_PROGNAME + string "Program name" + default "spislv" + ---help--- + This is the name of the program that will be used when the NSH ELF + program is installed. + +config EXAMPLES_SPISLV_PRIORITY + int "Spislv task priority" + default 100 + +config EXAMPLES_SPISLV_STACKSIZE + int "Spislv stack size" + default DEFAULT_TASK_STACKSIZE + +endif diff --git a/examples/spislv_test/Make.defs b/examples/spislv_test/Make.defs new file mode 100644 index 0000000000..e8b23330ea --- /dev/null +++ b/examples/spislv_test/Make.defs @@ -0,0 +1,23 @@ +############################################################################ +# apps/examples/spislv/Make.defs +# +# Licensed to the Apache Software Foundation (ASF) under one or more +# contributor license agreements. See the NOTICE file distributed with +# this work for additional information regarding copyright ownership. The +# ASF licenses this file to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance with the +# License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. +# +############################################################################ + +ifneq ($(CONFIG_EXAMPLES_SPISLV),) +CONFIGURED_APPS += $(APPDIR)/examples/spislv_test +endif diff --git a/examples/spislv_test/Makefile b/examples/spislv_test/Makefile new file mode 100644 index 0000000000..44b099d1d0 --- /dev/null +++ b/examples/spislv_test/Makefile @@ -0,0 +1,34 @@ +############################################################################ +# apps/examples/spislv_test/Makefile +# +# Licensed to the Apache Software Foundation (ASF) under one or more +# contributor license agreements. See the NOTICE file distributed with +# this work for additional information regarding copyright ownership. The +# ASF licenses this file to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance with the +# License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. +# +############################################################################ + +include $(APPDIR)/Make.defs + +# SPI SLAVE TEST built-in application info + +PROGNAME = $(CONFIG_EXAMPLES_SPISLV_PROGNAME) +PRIORITY = $(CONFIG_EXAMPLES_SPISLV_PRIORITY) +STACKSIZE = $(CONFIG_EXAMPLES_SPISLV_STACKSIZE) +MODULE = $(CONFIG_EXAMPLES_SPISLV) + +# SPI SLAVE TEST Example + +MAINSRC = spislv_test.c + +include $(APPDIR)/Application.mk diff --git a/examples/spislv_test/spislv_test.c b/examples/spislv_test/spislv_test.c new file mode 100644 index 0000000000..1ac4e5b334 --- /dev/null +++ b/examples/spislv_test/spislv_test.c @@ -0,0 +1,102 @@ +/**************************************************************************** + * apps/examples/spislv_test/spislv_test.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include +#include +#include +#include +#include +#include + +#define SOURCE_FILE "/dev/spislv2" +#define BUFFER_SIZE 256 + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * spislv_test + ****************************************************************************/ + +int main(int argc, FAR char *argv[]) +{ + int fd; + char buffer[BUFFER_SIZE]; + ssize_t bytes_read; + ssize_t i; + + printf("Slave started!!\n"); + fd = open(SOURCE_FILE, O_RDWR); + + if (fd < 0) + { + printf("Failed to open %s: %s\n", SOURCE_FILE, strerror(errno)); + return 0; + } + + while (1) + { + /* Read the number from the source file */ + + printf("Slave: Reading from %s\n", SOURCE_FILE); + bytes_read = read(fd, buffer, BUFFER_SIZE - 1); + + if (bytes_read < 0) + { + printf("Failed to read from %s: %s\n", + SOURCE_FILE, strerror(errno)); + close(fd); + return 0; + } + else if (bytes_read > 0) + { + buffer[bytes_read] = '\0'; + + /* Print buffer in hexadecimal format */ + + printf("Slave: Read value in hex: "); + for (i = 0; i < bytes_read; ++i) + { + printf("%02x ", (unsigned char)buffer[i]); + } + + printf("\n"); + + /* Write the same value back */ + + printf("Slave: Writing %d bytes back to %s\n", + bytes_read, SOURCE_FILE); + ssize_t bytes_written = write(fd, buffer, bytes_read); + if (bytes_written < 0) + { + printf("Failed to write to %s: %s\n", + SOURCE_FILE, strerror(errno)); + close(fd); + return 0; + } + } + } +}