Added pre-erase command to boost multiple write block performance

2017-06-27 14:00:44 -05:00 · 2017-06-27 14:00:44 -05:00 · a7f23635a4
parent 04e1a57c2d
commit a7f23635a4
1 changed files with 2 additions and 0 deletions
--- a/features/filesystem/sd/SDBlockDevice.cpp
+++ b/features/filesystem/sd/SDBlockDevice.cpp
@ -410,6 +410,8 @@ int SDBlockDevice::program(const void *b, bd_addr_t addr, bd_size_t size)
         */
        status = _cmd(CMD13_SEND_STATUS, 0);
    } else {
+        // Pre-erase setting prior to multiple block write operation
+        _cmd(ACMD23_SET_WR_BLK_ERASE_COUNT, blockCnt, 1);
        // Multiple block write command
        if (BD_ERROR_OK != (status = _cmd(CMD25_WRITE_MULTIPLE_BLOCK, addr))) {
            _lock.unlock();