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bitread: Make private members const and add some comments 

Signed-off-by: Tomasz Michalak <tmichalak@antmicro.com>
This commit is contained in:
Tomasz Michalak 2020-12-01 15:16:20 +01:00
parent 6740e18a63
commit f00011c8fd
1 changed files with 14 additions and 4 deletions
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18
lib/include/prjxray/xilinx/bitstream_reader.h
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@ -84,9 +84,9 @@ class BitstreamReader {
iterator end(); iterator end();
private: private:
static std::array<uint8_t, 4> kSyncWord; static const std::array<uint8_t, 4> kSyncWord;
const std::vector<uint32_t> kWcfgCmd = {0x30008001, 0x1}; static const std::array<uint32_t, 2> kWcfgCmd;
const std::vector<uint32_t> kNullCmd = {0x30008001, 0x0}; static const std::array<uint32_t, 2> kNullCmd;
std::vector<uint32_t> words_; std::vector<uint32_t> words_;
}; };
@ -170,9 +170,19 @@ BitstreamReader<ArchType>::InitWithBytes(T bitstream) {
// Sync word as specified in UG470 page 81 // Sync word as specified in UG470 page 81
template <typename ArchType> template <typename ArchType>
std::array<uint8_t, 4> BitstreamReader<ArchType>::kSyncWord{0xAA, 0x99, 0x55, const std::array<uint8_t, 4> BitstreamReader<ArchType>::kSyncWord{0xAA, 0x99, 0x55,
0x66}; 0x66};
// Writing the WCFG(0x1) command in type 1 packet with 1 word to the CMD register (0x30008001)
// Refer to UG470 page 110
template <typename ArchType>
const std::array<uint32_t, 2> BitstreamReader<ArchType>::kWcfgCmd = {0x30008001, 0x1};
// Writing the NULL(0x0) command in type 1 packet with 1 word to the CMD register (0x30008001)
// Refer to UG470 page 110
template <typename ArchType>
const std::array<uint32_t, 2> BitstreamReader<ArchType>::kNullCmd = {0x30008001, 0x0};
template <typename ArchType> template <typename ArchType>
typename BitstreamReader<ArchType>::iterator typename BitstreamReader<ArchType>::iterator
BitstreamReader<ArchType>::begin() { BitstreamReader<ArchType>::begin() {