From: James Sarrett <jsarrett@gmail.com>
Date: Thu, 11 May 2017 07:10:52 +0000 (-0700)
Subject: send bus initialization bits before MMC_GO_IDLE_STATE command to initialize card... 
X-Git-Tag: v2.1-rc1~5^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b7720246996da38841f59f2e5e36a57dec49384d;p=esp-idf

send bus initialization bits before MMC_GO_IDLE_STATE command to initialize card after poweron
---

diff --git a/components/driver/sdmmc_transaction.c b/components/driver/sdmmc_transaction.c
index 92876f75a2..3adc9ce68e 100644
--- a/components/driver/sdmmc_transaction.c
+++ b/components/driver/sdmmc_transaction.c
@@ -215,6 +215,8 @@ static sdmmc_hw_cmd_t make_hw_cmd(sdmmc_command_t* cmd)
     res.cmd_index = cmd->opcode;
     if (cmd->opcode == MMC_STOP_TRANSMISSION) {
         res.stop_abort_cmd = 1;
+    } else if (cmd->opcode == MMC_GO_IDLE_STATE) {
+        res.send_init = 1;
     } else {
         res.wait_complete = 1;
     }