PSoC4 Programming & Hex file Dump
参考文档：Infineon-CY8C4xxx_CYBLxxxx_Programming_Specifications-Programming Specifications
文档对于PSoC4通过SWD下载进行详尽的描述，此处仅整理相关笔记及分享从Hex中dump CRC值。
- 表一中记录Programming Values：（ID等）Acquire Chip时需要
- Hex File记录：
0x0000_0000 ：开始为User Flash，程序地址
0x9030_0000 ：CheckSum, CRC校验，2Byte，是整个user flash 的校验。
0x9040_0000 ：Flash Protection（of users rows），Protection Size = FlashSize/Row Size/8，如Flash 128KB，Flash Protection为128Byte
0x9050_0000 ：MetaData - 12bytes，内容如下：
| Offset | Data Type | Length in bytes |
|---|---|---|
| 0x00 | Hex file version - “2” | 2 (big-endian) |
| 0x02 | Silicon ID | 4 (big-endian) |
| 0x06 | Reserved | 1 |
| 0x07 | Reserved | 1 |
| 0x08 | Internal use | 4 |
Silicon ID: 程序下载时，Acquired device与此ID相比较，必须相等才可以下载，Revision ID跳过。
byte[0] : Silicon ID Hi
byte[1] : Silicon ID Lo
byte[2] : Revision ID
byte[3] : Family ID
- 0x9060_0000 ：Chip Level protection - 1bytes
- SWD下载流程：
第一步：Acquire Chip，如果对于未接XRES的MCU，并且SWD复用为IIC的4014等芯片来说，如果使用官方下载器可能没问题，如果要自制时就需要注意，尤其是power cycle的时序：
Power UP 后，需要在5ms~5.4mS之间访问！最小的SWD时钟频率为1.5MHz，满足400uS。
- Hex File:
| Start Code | Byte Count | Address | Record Type | Data | Check Sum |
|---|---|---|---|---|---|
| : | 1 byte | 2 bytes | 1 byte | N bytes | 1 byte |
- Start code , one character — an ASCII colon ‘:’
- Byte count , two hex digits (1 byte) — specifies the number of bytes in the data field.
- Address, four hex digits (2 bytes) — a 16-bit address of the beginning of the memory position for the data.
- Record type, two hex digits (00 to 05) — defines the type of the data field. The record types used in the hex file are as follows.
• 00 – Data record, which contains data and 16-bit address.
• 01 – End of file record, which is a file termination record and has no data. This must be the last line of the file; only one is allowed for every file.
• 04 – Extended linear address record, which allows full 32-bit addressing. Address field is 0000. Byte count is 02 . The two data bytes represent the upper 16 bits of the 32-bit address, when combined with the lower 16-bit address of the 00 type record. - Data, a sequence of ‘n’ bytes of the data, represented by 2n hex digits.
- Checksum, two hex digits (1 byte), which is the least significant byte of the two’s complement of the sum of the values of all fields except fields 1 and 6 (start code ‘:’ byte and two hex digits of the checksum).
如：PSoC Hex文件：
0x90300000地址的CRC：0xD097，可以使用notepad打开hex文件，拖到结尾直接查看crc校验。解析之：
