115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
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#include "product_info_api.h"
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#include "syscfg_id.h"
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#include "vm.h"
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#include "app_config.h"
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#include "typedef.h"
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#include "system/includes.h"
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#define PRODUCT_INFO_API_EN 0 //默认不开启
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#if (PRODUCT_INFO_API_EN)
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struct __product_info_head {
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s16 crc;
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u16 len;
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const u8 data[];
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} __attribute__((packed));
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typedef enum _FLASH_ERASER {
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CHIP_ERASER = 0,
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BLOCK_ERASER,
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SECTOR_ERASER,
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PAGE_ERASER,
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} FLASH_ERASER;
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//*----------------------------------------------------------------------------*/
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/**@brief 获取产品信息地址偏移
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@param
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@return 返回产品信息地址偏移
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@note 产品信息是在芯片烧写的时候， 使用1拖2或者1拖8进行烧录的
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*/
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/*----------------------------------------------------------------------------*/
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static u32 product_info_get_ptr(void)
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{
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u32 flash_capacity = sdfile_get_disk_capacity();
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u32 addr = flash_capacity - 256 + 80;
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printf("flash capacity:%x \n", flash_capacity);
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return sdfile_flash_addr2cpu_addr(addr);
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}
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//*----------------------------------------------------------------------------*/
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/**@brief 产品信息检查
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@param para:产品信息位置偏移
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@return
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@note 产品信息是在芯片烧写的时候， 使用1拖2或者1拖8进行烧录的
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*/
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/*----------------------------------------------------------------------------*/
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static int product_info_check(const u8 *para)
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{
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struct __product_info_head *head;
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//fill head
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head = (struct __product_info_head *)para;
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if (head->len >= 0xff) {
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printf("product info len err!!\n");
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return -1;
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}
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///crc check
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u8 *crc_data = (u8 *)(para + sizeof(((struct __product_info_head *)0)->crc));
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u32 crc_len = sizeof(struct __product_info_head)
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- sizeof(((struct __product_info_head *)0)->crc)/*head crc*/
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+ (head->len)/*content crc,include end character '\0'*/;
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s16 crc_sum = 0;
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crc_sum = CRC16(crc_data, crc_len);
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if (crc_sum != head->crc) {
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("product info crc error !!! %x %x \n", (u32)crc_sum, (u32)head->crc);
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return -1;
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}
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return 0;
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}
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//*----------------------------------------------------------------------------*/
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/**@brief 获取产品信息接口
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@param buf:外部传进来的缓存， len:缓存长度
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@return
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@note 产品信息是在芯片烧写的时候， 使用1拖2或者1拖8进行烧录的
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*/
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/*----------------------------------------------------------------------------*/
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int product_info_prase(u8 *buf, u16 len)
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{
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//产品信息内容建议不要超过128
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u8 *data_ptr = (u8 *)product_info_get_ptr();
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int ret = product_info_check((const u8 *)data_ptr);
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if (ret) {
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return -1;
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}
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struct __product_info_head *head = (struct __product_info_head *)data_ptr;
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if (len < head->len) {
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printf("prase buf not enough\n");
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return -1;
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}
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memcpy(buf, data_ptr + sizeof(struct __product_info_head), head->len);
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return 0;
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}
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//测试代码
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#if 0
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void product_info_debug(void)
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{
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printf("product_info_debug \n");
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u8 tst_data[128] = {0};
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product_info_prase(tst_data, sizeof(tst_data));
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printf("tst_data = %s\n", tst_data);
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put_buf(tst_data, 256);
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//针对获出来的数据结合方案需求进行解析
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}
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#endif
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#endif//PRODUCT_INFO_API_EN
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