From: Daniel <inxonic@users.noreply.github.com>
Date: Mon, 1 May 2017 01:29:01 +0000 (+0200)
Subject: place initialization sequence into DRAM to be reachable by DMA
X-Git-Tag: v2.1-rc1~127^2~3
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=dfb8aa625753384e5bd4fe523faa648093345c61;p=esp-idf

place initialization sequence into DRAM to be reachable by DMA

Signed-off-by: Jeroen Domburg <jeroen@espressif.com>
---

diff --git a/examples/peripherals/spi_master/main/spi_master_example_main.c b/examples/peripherals/spi_master/main/spi_master_example_main.c
index b9cdd20092..981a7317f4 100644
--- a/examples/peripherals/spi_master/main/spi_master_example_main.c
+++ b/examples/peripherals/spi_master/main/spi_master_example_main.c
@@ -50,7 +50,8 @@ typedef struct {
     uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds.
 } ili_init_cmd_t;
 
-static const ili_init_cmd_t ili_init_cmds[]={
+//Place data into DRAM. Constant data gets placed into DROM by default, which is not accessible by DMA.
+DRAM_ATTR static const ili_init_cmd_t ili_init_cmds[]={
     {0xCF, {0x00, 0x83, 0X30}, 3},
     {0xED, {0x64, 0x03, 0X12, 0X81}, 4},
     {0xE8, {0x85, 0x01, 0x79}, 3},