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Improve SD card reliability on all boards by trying to initialise multiple times before failing

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This commit is contained in:
Gordon Williams 2018-01-29 15:16:01 +00:00
parent ee11a83581
commit 773a83387f
2 changed files with 10 additions and 3 deletions
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1
ChangeLog
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@ -16,6 +16,7 @@
Fix mild memory leak in jsvMakeIntoVariableName that caused GC to run more often than normal
E.toString now tries harder to allocate a Flat String, and works with no-alloc for Uint8Array/FlatStrings
WIO_LTE fix SD card initialisation
Improve SD card reliability on all boards by trying to initialise multiple times before failing
1v95 : nRF5x: Swap to UART fifo to avoid overrun errors at high baud rates
Ensure Exceptions/errors are reported on a blank line

12
libs/filesystem/fat_sd/spi_diskio.c
View File

@ -36,6 +36,7 @@
#include "platform_config.h"
#include "jsutils.h"
#include "jshardware.h"
#include "jsparse.h"
#include "jsspi.h"
#include "diskio.h"
@ -325,11 +326,16 @@ DSTATUS disk_initialize (
if (drv) return STA_NOINIT; /* Supports only single drive */
if (Stat & STA_NODISK) return Stat; /* No card in the socket */
power_on(); /* Force socket power on */
for (n = 10; n; n--) read_spi_byte(); /* 80 dummy clocks */
// try and initialise the SD card - give it a few tries
int tries = 2;
do {
power_on(); /* Force socket power on */
for (n = 10; n; n--) read_spi_byte(); /* 80 dummy clocks */
n = send_cmd(CMD0, 0);
} while ((n != 1) && (tries-- > 0) && !jspIsInterrupted());
ty = 0;
if (send_cmd(CMD0, 0) == 1) { /* Enter Idle state */
if (n == 1) { /* Enter Idle state */
JsSysTime endTime = jshGetSystemTime()+jshGetTimeFromMilliseconds(1000); /* Initialization timeout of 1000 msec */
if (send_cmd(CMD8, 0x1AA) == 1) { /* SDHC */
for (n = 0; n < 4; n++) ocr[n] = read_spi_byte(); /* Get trailing return value of R7 resp */