libsi24: basic setup

- header file logic
- basic functions
- basic CMake

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build/

diff --git a/CMakeLists.txt b/CMakeLists.txt
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+++ b/CMakeLists.txt
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+cmake_minimum_required(VERSION 3.5)
+project(libsi24
+    VERSION 0.30.0
+    LANGUAGES C
+)
+set(PROJECT_DESCRIPTION "si24r1 library")
+set(PROJECT_HOMEPAGE_URL https://github.com/robinkrens/libsi24)
+
+add_compile_options(-Wall -Wextra -pedantic -Werror)
+
+add_library(libsi24 libsi24.c)
+
+target_include_directories(libsi24
+    PUBLIC
+        $<INSTALL_INTERFACE:include>
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+    PRIVATE
+        ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+include(GNUInstallDirs)
+
+install(TARGETS libsi24
+    EXPORT libsi24-export
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+)
+install(FILES libsi24.h
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
+install(EXPORT libsi24-export
+    FILE libsi24.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/libsi24
+)
+
+include(CPack)

diff --git a/libsi24.c b/libsi24.c
new file mode 100644 (file)
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--- /dev/null
+++ b/libsi24.c
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+/**
+ * File              : libsi24.c
+ * Author            : Robin Krens <robin@robinkrens.nl>
+ * Date              : 18.01.2023
+ * Last Modified Date: 18.01.2023
+ * Last Modified By  : Robin Krens <robin@robinkrens.nl>
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "libsi24.h"
+#include "libsi24reg.h"
+
+struct si24_t {
+       const si24_opts_t *opts;
+       const si24_ioctl_t *ctl;
+       si24_event_handler_t eh;
+};
+
+si24_t* si24_init(const si24_opts_t *opts, si24_event_handler_t eh)
+{
+       struct si24_t *si = (si24_t*) calloc(1, sizeof(si24_t));
+       if (si == 0)
+               return 0;
+
+       si->opts = opts;
+       si->ctl = opts->ioctl;
+       si->eh = eh;
+
+       return si;
+}
+
+int main(void)
+{
+}

diff --git a/libsi24.h b/libsi24.h
new file mode 100644 (file)
index 0000000..5e2f53c
--- /dev/null
+++ b/libsi24.h
@@ -0,0 +1,72 @@
+/**
+ * File              : libsi24.h
+ * Author            : Robin Krens <robin@robinkrens.nl>
+ * Date              : 18.01.2023
+ * Last Modified Date: 18.01.2023
+ * Last Modified By  : Robin Krens <robin@robinkrens.nl>
+ */
+
+#include <stddef.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+enum si24_status_t {
+    SHUTDOWN = 0,
+    STANDBY,
+    IDLETX,
+    TX,
+    RX
+};
+
+typedef enum si24_status_t si24_status_t;
+
+enum si24_type_t {
+    RECV = 0,
+    SEND
+};
+
+typedef enum si24_type_t si24_type_t;
+
+enum si24_crc_t {
+    ONE_BYTE = 1,
+    TWO_BYTE = 2
+};
+
+typedef enum si24_crc_t si24_crc_t;
+
+enum si24_event_t {
+    TEST = 0
+};
+
+typedef enum si24_event_t si24_event_t;
+
+/* low level IO control */
+typedef struct {
+    size_t (*read)(unsigned char* buf, size_t size);
+    size_t (*write)(const unsigned char* buf, size_t size);
+} si24_ioctl_t;
+
+typedef struct {
+    si24_type_t type;
+    unsigned enable_ack;
+    si24_crc_t crc;
+    si24_ioctl_t *ioctl;
+    unsigned msg_len;
+} si24_opts_t;
+
+/* private data structure */
+typedef struct si24_t si24_t;
+
+typedef void (*si24_event_handler_t)(si24_t* si24, si24_event_t* event);
+
+extern si24_t* si24_init(const si24_opts_t* si24opts, si24_event_handler_t eh);
+extern void si24_free(si24_t* si24);
+extern void si24_send(si24_t* si24, const char* buf, size_t size);
+extern void si24_recv(si24_t* si24, char* buf, size_t size);
+extern void si24_reset(si24_t* si24);
+
+#if defined(__cplusplus)
+}
+#endif

diff --git a/libsi24reg.h b/libsi24reg.h
new file mode 100644 (file)
index 0000000..ff9cdf3
--- /dev/null
+++ b/libsi24reg.h
@@ -0,0 +1,32 @@
+/**
+ * File              : libsi24reg.h
+ * Author            : Robin Krens <robin@robinkrens.nl>
+ * Date              : 18.01.2023
+ * Last Modified Date: 18.01.2023
+ * Last Modified By  : Robin Krens <robin@robinkrens.nl>
+ */
+
+
+#define SI24_READ_REG 0x00
+#define SI24_WRITE_REG 0x20
+#define SI24_R_RX_PAYLOAD 0x61
+#define SI24_W_TX_PAYLOAD 0xA0
+#define SI24_FLUSH_TX 0xE1
+
+typedef struct {
+    union {
+        unsigned char byte;
+        struct {
+            unsigned PRIM_XR : 1;
+            unsigned PWR_UP : 1;
+            unsigned CRCO : 1;
+            unsigned EN_CRC : 1;
+            unsigned MASK_MAX_RT : 1;
+            unsigned MASK_TX_DS : 1;
+            unsigned MAKS_RX_DS : 1;
+            unsigned _RESERVED : 1;
+        } bits;
+    };
+} config_reg_t;
+
+