最近在看BlueNRG ota升级代码时有一个疑惑，ota_sw_activation变量是一个未初始化的值，按照ram特性上电应该是一个随机值，那么在OTA_Check_ServiceManager_Operation()函数中判断值就可能存在偶然的误操作？
if (ota_sw_activation == OTA_APP_SWITCH_OP_CODE_GO_TO_OTA_SERVICE_MANAGER) //Go to OTA Service manager
{
/* Unlock the Flash */
flash_sw_lock = FLASH_UNLOCK_WORD;
/* Set Invalid valid tag x OTA Application with OTA Service Manager for allowing jumping to OTA Service manager */
FLASH_ProgramWord(APP_WITH_OTA_SERVICE_ADDRESS + OTA_TAG_VECTOR_TABLE_ENTRY_OFFSET, OTA_INVALID_OLD_TAG);
/* Lock the Flash */
flash_sw_lock = FLASH_LOCK_WORD;
/* Reset Service Manager ram location */
ota_sw_activation = OTA_INVALID_OLD_TAG;
} |
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楼主
