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qmk_settings: initial prototype

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This commit is contained in:
Ilya Zhuravlev 2021-06-29 19:43:11 -04:00
parent c0cd1bfc6c
commit 8dc2d07288
6 changed files with 143 additions and 8 deletions
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36
quantum/qmk_settings.c Normal file
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#include "qmk_settings.h"
#include <stddef.h>
#include "progmem.h"
#include <string.h>
qmk_settings_t QS;
#define DECLARE_SETTING(id, field) { .qsid=id, .ptr=&QS.field, .sz=sizeof(QS.field) }
static const qmk_settings_proto_t protos[] PROGMEM = {
DECLARE_SETTING(1, grave_esc_override),
};
static const qmk_settings_proto_t *find_setting(uint16_t qsid) {
for (size_t i = 0; i < sizeof(protos)/sizeof(*protos); ++i)
if (pgm_read_word(&protos[i].qsid) == qsid)
return &protos[i];
return NULL;
}
int qmk_settings_get(uint16_t qsid, void *setting, size_t maxsz) {
const qmk_settings_proto_t *proto = find_setting(qsid);
if (!proto || pgm_read_word(&proto->sz) > maxsz)
return -1;
memcpy(setting, pgm_read_ptr(&proto->ptr), pgm_read_word(&proto->sz));
return 0;
}
int qmk_settings_set(uint16_t qsid, const void *setting, size_t maxsz) {
const qmk_settings_proto_t *proto = find_setting(qsid);
if (!proto || pgm_read_word(&proto->sz) > maxsz)
return -1;
memcpy(pgm_read_ptr(&proto->ptr), setting, pgm_read_word(&proto->sz));
return 0;
}