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Add documentation to sysparam.h

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This commit is contained in:
Alex Stewart 2016-03-08 17:00:24 -08:00
parent b67783635b
commit 7721e24b0e
2 changed files with 335 additions and 3 deletions
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9
core/sysparam.c
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@ -575,6 +575,8 @@ sysparam_status_t sysparam_set_data(const char *key, const uint8_t *value, size_
if (!key_len) return SYSPARAM_ERR_BADVALUE;
if (value_len > 0xff) return SYSPARAM_ERR_BADVALUE;
if (!value) value_len = 0;
if (value_len && ((intptr_t)value & 0x3)) {
// The passed value isn't word-aligned. This will be a problem later
// when calling `sdk_spi_flash_write`, so make a word-aligned copy.
@ -733,6 +735,13 @@ sysparam_status_t sysparam_set_int(const char *key, int32_t value) {
sysparam_status_t sysparam_set_bool(const char *key, bool value) {
uint8_t buf[4] = {0xff, 0xff, 0xff, 0xff};
bool old_value;
// Don't write anything if the current setting already evaluates to the
// same thing.
if (sysparam_get_bool(key, &old_value) == SYSPARAM_OK) {
if (old_value == value) return SYSPARAM_OK;
}
buf[0] = value ? 'y' : 'n';
return sysparam_set_data(key, buf, 1);