{"id":8940,"date":"2018-12-24T10:51:39","date_gmt":"2018-12-24T10:51:39","guid":{"rendered":"http:\/\/blog.bachi.net\/?p=8940"},"modified":"2018-12-24T10:51:39","modified_gmt":"2018-12-24T10:51:39","slug":"nrf5-sdk-preprocessor-magic","status":"publish","type":"post","link":"https:\/\/blog.bachi.net\/?p=8940","title":{"rendered":"nRF5 SDK Preprocessor Magic"},"content":{"rendered":"<pre class=\"brush: cpp; title: Input; notranslate\" title=\"Input\">\r\n\r\n#include &lt;stdint.h&gt;\r\n#include &lt;stddef.h&gt;\r\n\r\n\r\ntypedef uint32_t ret_code_t;\r\ntypedef uint32_t (*nrf_log_timestamp_func_t)(void);\r\n\r\ntypedef enum\r\n{\r\n    NRF_LOG_SEVERITY_NONE,\r\n    NRF_LOG_SEVERITY_ERROR,\r\n    NRF_LOG_SEVERITY_WARNING,\r\n    NRF_LOG_SEVERITY_INFO,\r\n    NRF_LOG_SEVERITY_DEBUG,\r\n    NRF_LOG_SEVERITY_INFO_RAW, \/* Artificial level to pass information about skipping string postprocessing.*\/\r\n} nrf_log_severity_t;\r\n\r\ntypedef struct\r\n{\r\n    const char *       p_module_name;    \/\/\/&lt; Module or instance name.\r\n    uint8_t            info_color_id;    \/\/\/&lt; Color code of info messages.\r\n    uint8_t            debug_color_id;   \/\/\/&lt; Color code of debug messages.\r\n    nrf_log_severity_t compiled_lvl;     \/\/\/&lt; Compiled highest severity level.\r\n    nrf_log_severity_t initial_lvl;      \/\/\/&lt; Severity level for given module or instance set on backend initialization.\r\n} nrf_log_module_const_data_t;\r\n\r\n#define _CONST                              const\r\n\r\n#define CONCAT_2(p1, p2)                    CONCAT_2_(p1, p2)\r\n#define CONCAT_2_(p1, p2)                   p1##p2\r\n#define CONCAT_3(p1, p2, p3)                CONCAT_3_(p1, p2, p3)\r\n#define CONCAT_3_(p1, p2, p3)               p1##p2##p3\r\n#define STRINGIFY_(val)                     #val\r\n#define STRINGIFY(val)                      STRINGIFY_(val)\r\n\r\n#define GET_VA_ARG_1(...)                   GET_VA_ARG_1_(__VA_ARGS__, )\r\n#define GET_VA_ARG_1_(a1, ...)              a1\r\n\r\n#define GET_ARGS_AFTER_1(...)               GET_ARGS_AFTER_1_(__VA_ARGS__, )\r\n#define GET_ARGS_AFTER_1_(a1, ...)          __VA_ARGS__\r\n\r\n#define NRF_SECTION_ITEM_REGISTER(section_name, section_var) \\\r\n    section_var __attribute__ ((section(&quot;.&quot; STRINGIFY(section_name)))) __attribute__((used))\r\n\r\n#define NRF_LOG_ITEM_DATA(_name)            CONCAT_3(m_nrf_log_,_name,_logs_data)\r\n#define NRF_LOG_ITEM_DATA_DYNAMIC(_name)    CONCAT_2(NRF_LOG_ITEM_DATA(_name),_dynamic)\r\n#define NRF_LOG_ITEM_DATA_FILTER(_name)     CONCAT_2(NRF_LOG_ITEM_DATA(_name),_filter)\r\n#define NRF_LOG_ITEM_DATA_CONST(_name)      CONCAT_2(NRF_LOG_ITEM_DATA(_name),_const)\r\n\r\n#define NRF_LOG_DYNAMIC_SECTION_NAME(_module_name)  CONCAT_2(log_dynamic_data_,_module_name)\r\n#define NRF_LOG_FILTER_SECTION_NAME(_module_name)   CONCAT_2(log_filter_data_,_module_name)\r\n#define NRF_LOG_CONST_SECTION_NAME(_module_name)    CONCAT_2(log_const_data_,_module_name)\r\n\r\n#define NRF_LOG_INTERNAL_CONST_ITEM_REGISTER(                                             \\\r\n            _name, _str_name, _info_color, _debug_color, _initial_lvl, _compiled_lvl)     \\\r\n            NRF_SECTION_ITEM_REGISTER(NRF_LOG_CONST_SECTION_NAME(_name),                  \\\r\n            _CONST nrf_log_module_const_data_t NRF_LOG_ITEM_DATA_CONST(_name)) = {        \\\r\n                .p_module_name   = _str_name,                                             \\\r\n                .info_color_id   = (_info_color),                                         \\\r\n                .debug_color_id  = (_debug_color),                                        \\\r\n                .compiled_lvl    = (nrf_log_severity_t)(_compiled_lvl),                   \\\r\n                .initial_lvl     = (nrf_log_severity_t)(_initial_lvl),                    \\\r\n            }\r\n\r\n#define NRF_LOG_INTERNAL_ITEM_REGISTER( \\\r\n                         _name, _str_name, _info_color, _debug_color, _initial_lvl, _compiled_lvl) \\\r\n    NRF_LOG_INTERNAL_CONST_ITEM_REGISTER(_name,                                                    \\\r\n                                         _str_name,                                                \\\r\n                                         _info_color,                                              \\\r\n                                         _debug_color,                                             \\\r\n                                         _initial_lvl,                                             \\\r\n                                         _compiled_lvl)\r\n\r\n#define NRF_LOG_INTERNAL_MODULE_REGISTER() \\\r\n                   NRF_LOG_INTERNAL_ITEM_REGISTER(NRF_LOG_MODULE_NAME,                 \\\r\n                                                  STRINGIFY(NRF_LOG_MODULE_NAME),      \\\r\n                                                  NRF_LOG_INFO_COLOR,                  \\\r\n                                                  NRF_LOG_DEBUG_COLOR,                 \\\r\n                                                  NRF_LOG_INITIAL_LEVEL,               \\\r\n                                                  COMPILED_LOG_LEVEL)\r\n\r\n#define NRF_LOG_MODULE_REGISTER() NRF_LOG_INTERNAL_MODULE_REGISTER()\r\n\r\n#define NRF_LOG_INTERNAL_INIT(...)               \\\r\n        nrf_log_init(GET_VA_ARG_1(__VA_ARGS__),  \\\r\n                     GET_VA_ARG_1(GET_ARGS_AFTER_1(__VA_ARGS__, LOG_TIMESTAMP_DEFAULT_FREQUENCY)))\r\n\r\n#define NRF_LOG_INIT(...) NRF_LOG_INTERNAL_INIT(__VA_ARGS__)\r\n\r\n#define NRF_LOG_MODULE_NAME                 app\r\n#define NRF_LOG_INFO_COLOR                  NRF_LOG_COLOR_DEFAULT\r\n#define NRF_LOG_DEBUG_COLOR                 NRF_LOG_COLOR_DEFAULT\r\n#define NRF_LOG_INITIAL_LEVEL               NRF_LOG_LEVEL\r\n#define NRF_LOG_LEVEL                       NRF_LOG_DEFAULT_LEVEL\r\n#define COMPILED_LOG_LEVEL                  NRF_LOG_LEVEL\r\n#define LOG_TIMESTAMP_DEFAULT_FREQUENCY     NRF_LOG_TIMESTAMP_DEFAULT_FREQUENCY\r\n\r\n\r\n#define NRF_LOG_COLOR_DEFAULT               0\r\n#define NRF_LOG_DEFAULT_LEVEL               3\r\n#define NRF_LOG_TIMESTAMP_DEFAULT_FREQUENCY 0\r\n\r\n\r\nNRF_LOG_MODULE_REGISTER();\r\n\r\nret_code_t nrf_log_init(nrf_log_timestamp_func_t timestamp_func, uint32_t timestamp_freq)\r\n{\r\n    (void)NRF_LOG_ITEM_DATA_CONST(app);\r\n\r\n    return 0;\r\n}\r\n\r\nstatic void log_init(void)\r\n{\r\n    ret_code_t err_code = NRF_LOG_INIT(NULL);\r\n}\r\n\r\nint main(int argc, char *argv&#x5B;])\r\n{\r\n    log_init();\r\n\r\n    return 0;\r\n}\r\n<\/pre>\n<pre class=\"brush: cpp; title: Output; notranslate\" title=\"Output\">\r\nconst nrf_log_module_const_data_t m_nrf_log_app_logs_data_const\r\n__attribute__ ((section(&quot;.&quot; &quot;log_const_data_app&quot;)))\r\n__attribute__((used)) = {\r\n    .p_module_name = &quot;app&quot;,\r\n    .info_color_id = (0),\r\n    .debug_color_id = (0),\r\n    .compiled_lvl = (nrf_log_severity_t)(3),\r\n    .initial_lvl = (nrf_log_severity_t)(3),\r\n};\r\n\r\nret_code_t nrf_log_init(nrf_log_timestamp_func_t timestamp_func, uint32_t timestamp_freq)\r\n{\r\n    (void)m_nrf_log_app_logs_data_const;\r\n\r\n    return 0;\r\n}\r\n\r\nstatic void log_init(void)\r\n{\r\n    ret_code_t err_code = nrf_log_init(\r\n        ((void *)0),\r\n        0\r\n    );\r\n}\r\n\r\nint main(int argc, char *argv&#x5B;])\r\n{\r\n    log_init();\r\n\r\n    return 0;\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>#include &lt;stdint.h&gt; #include &lt;stddef.h&gt; typedef uint32_t ret_code_t; typedef uint32_t (*nrf_log_timestamp_func_t)(void); typedef enum { NRF_LOG_SEVERITY_NONE, NRF_LOG_SEVERITY_ERROR, NRF_LOG_SEVERITY_WARNING, NRF_LOG_SEVERITY_INFO, NRF_LOG_SEVERITY_DEBUG, NRF_LOG_SEVERITY_INFO_RAW, \/* Artificial level to pass information about skipping string postprocessing.*\/ } nrf_log_severity_t; typedef struct { const char * p_module_name; \/\/\/&lt; Module or instance name. uint8_t info_color_id; \/\/\/&lt; Color code of info messages. uint8_t debug_color_id; \/\/\/&lt; Color [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8940","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/8940","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8940"}],"version-history":[{"count":1,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/8940\/revisions"}],"predecessor-version":[{"id":8941,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/8940\/revisions\/8941"}],"wp:attachment":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8940"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8940"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}