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examples/lte_hibernation: Change handling of context data buffer
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Changed handling of context data buffer so that the sample code
does not need to be changed even if the buffer size of context
data is increased.
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@SPRESENSE
SPRESENSE committed Nov 29, 2024
1 parent 74777c6 commit 38168ca
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Showing 4 changed files with 188 additions and 80 deletions.
98 changes: 76 additions & 22 deletions examples/lte_hibernation/lte_hibernation_main.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,25 @@ static char g_app_iobuffer[APP_IOBUFFER_LEN];
* Private Functions
****************************************************************************/

/****************************************************************************
* Name: get_file_size
*
* Description:
* Get the size of the specified file.
****************************************************************************/

static int get_file_size(char *filename)
{
struct stat tmp;

if (stat(filename, &tmp) == 0)
{
return tmp.st_size;
}

return -1;
}

/****************************************************************************
* Name: set_rtc_alarm
*
Expand Down Expand Up @@ -226,11 +245,11 @@ static int lte_enter_hibernation(void)

static int lte_resume_from_hibernation(void)
{
struct stat tmp;
uint8_t data[512] = {0};
int size = 0;
int ctx_size;
int ret = 0;
int fd = 0;
uint8_t data[64];

ret = lte_initialize();
if (ret < 0 && ret != -EALREADY)
Expand All @@ -239,22 +258,50 @@ static int lte_resume_from_hibernation(void)
return -1;
}

if (stat(LTE_HIBERNATION_CONTEXT_PATH, &tmp) == 0)
size = get_file_size(LTE_HIBERNATION_CONTEXT_PATH);
if (size > 0)
{
fd = open(LTE_HIBERNATION_CONTEXT_PATH, O_RDONLY);
size = read(fd, data, 512);
close(fd);
/* Get the context size required for resume. */

ctx_size = lte_hibernation_resume(NULL, 0);
if (ctx_size != size)
{
printf("File size does not match."
" file size = %d, context size = %d\n",
size, ctx_size);
ret = -1;
}
else
{
fd = open(LTE_HIBERNATION_CONTEXT_PATH, O_RDONLY);

do
{
size = read(fd, data, sizeof(data));
ret = lte_hibernation_resume(data, size);
if (ret < 0)
{
printf("lte_hibernation_resume failed.\n");
}
else
{
printf("remain size = %d\n", ret);
}
}
while (ret > 0);

close(fd);
}

unlink(LTE_HIBERNATION_CONTEXT_PATH);
}
else
{
return -1;
ret = -1;
}

ret = lte_hibernation_resume(data, size);
if (ret < 0)
if (ret != 0)
{
printf("lte_hibernation_resume failed.\n");
lte_finalize();
return -1;
}
Expand Down Expand Up @@ -484,22 +531,29 @@ int main(int argc, FAR char *argv[])
printf("Resume from LTE hibernation mode.\n");

ret = lte_resume_from_hibernation();
if (ret < 0)
if (ret == 0)
{
return -1;
/* Run wget */

ret = perform_wget();
if (ret < 0)
{
return -1;
}

printf("End of this sample\n");
return 0;
}
}
else
{
/* Normal boot */

printf("Turn On LTE.\n");
/* Normal boot */

ret = app_connect_to_lte(&apnsetting);
if (ret < 0)
{
return -1;
}
printf("Turn On LTE.\n");

ret = app_connect_to_lte(&apnsetting);
if (ret < 0)
{
return -1;
}

/* Run wget */
Expand Down Expand Up @@ -531,6 +585,6 @@ int main(int argc, FAR char *argv[])
/* Entering cold sleep */

boardctl(BOARDIOC_POWEROFF, 1);

return 0;
}
16 changes: 16 additions & 0 deletions examples/lte_hibernation_wake_socket/file_utils.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -132,3 +132,19 @@ bool app_file_exist(char *filename)

return false;
}

/****************************************************************************
* Name: app_file_size
****************************************************************************/

int app_file_size(char *filename)
{
struct stat tmp;

if (stat(filename, &tmp) == 0)
{
return tmp.st_size;
}

return 0;
}
1 change: 1 addition & 0 deletions examples/lte_hibernation_wake_socket/file_utils.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -43,5 +43,6 @@
int app_save_file(FAR char *filename, FAR uint8_t *data, int size);
int app_read_file(FAR char *filename, FAR uint8_t *data, int size);
bool app_file_exist(char *filename);
int app_file_size(char *filename);

#endif /* __EXAMPLES_LTE_HIBERNATION_WAKE_SOCKET_FILE_UTILS_H */
153 changes: 95 additions & 58 deletions examples/lte_hibernation_wake_socket/lte_hibernation_wake_socket_main.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -688,7 +688,10 @@ static int lte_enter_hibernation(void)
static int lte_resume_from_hibernation(void)
{
int size = 0;
int ctx_size;
int ret = 0;
int fd = 0;
uint8_t data[64];

if (strncmp(SD_MOUNT_POINT, SAVE_DIR, strlen(SD_MOUNT_POINT)) == 0)
{
Expand All @@ -706,23 +709,55 @@ static int lte_resume_from_hibernation(void)
return -1;
}

size = app_read_file(LTE_HIBERNATION_CONTEXT_PATH,
g_iobuffer, sizeof(g_iobuffer));
if (size < 0)
size = app_file_size(LTE_HIBERNATION_CONTEXT_PATH);
if (size > 0)
{
lte_finalize();
return -1;
/* Get the context size required for resume. */

ctx_size = lte_hibernation_resume(NULL, 0);
if (ctx_size != size)
{
printf("File size does not match."
" file size = %d, context size = %d\n",
size, ctx_size);
ret = -1;
}
else
{
fd = open(LTE_HIBERNATION_CONTEXT_PATH, O_RDONLY);

do
{
size = read(fd, data, sizeof(data));
ret = lte_hibernation_resume(data, size);
if (ret < 0)
{
printf("lte_hibernation_resume failed.\n");
}
else
{
printf("remain size = %d\n", ret);
}
}
while (ret > 0);

close(fd);
}

unlink(LTE_HIBERNATION_CONTEXT_PATH);
}
else
{
ret = -1;
}

ret = lte_hibernation_resume(g_iobuffer, size);
if (ret < 0)
if (ret != 0)
{
printf("lte_hibernation_resume failed.\n");
lte_finalize();
return -1;
}

return ret;
return 0;
}

/****************************************************************************
Expand Down Expand Up @@ -896,7 +931,7 @@ int main(int argc, FAR char *argv[])
ret = lte_resume_from_hibernation();
if (ret < 0)
{
return -1;
goto normal_boot;
}

/* Find out if there is a file that stores the context of the secure
Expand Down Expand Up @@ -1001,71 +1036,73 @@ int main(int argc, FAR char *argv[])

printf("End of this sample\n");
}

return 0;
}
else
{
/* Normal boot */

printf("Turn On LTE.\n");
normal_boot:

/* ------------------------
* 1. Connect LTE network
* ------------------------
*/
/* Normal boot */

ret = app_connect_to_lte(&apnsetting);
if (ret < 0)
{
return -1;
}
printf("Turn On LTE.\n");

/* --------------------------------------
* 2. send HTTP request (secure socket)
* --------------------------------------
*/
/* ------------------------
* 1. Connect LTE network
* ------------------------
*/

/* HTTP requests are sent using secure socket. HTTP response will
* arrive 10 seconds later. In the meantime, Spresense sleeps and
* waits for the HTTP response, and wakes up when triggered by
* the HTTP response.
*/
ret = app_connect_to_lte(&apnsetting);
if (ret < 0)
{
return -1;
}

ret = send_https_request(&g_tls_context, APP_HTTPS_WGET_URL);
if (ret < 0)
{
return -1;
}
/* --------------------------------------
* 2. send HTTP request (secure socket)
* --------------------------------------
*/

/* Save to file the secure socket context needed to receive a HTTP
* response after resuming from sleep.
*/
/* HTTP requests are sent using secure socket. HTTP response will
* arrive 10 seconds later. In the meantime, Spresense sleeps and
* waits for the HTTP response, and wakes up when triggered by
* the HTTP response.
*/

ret = save_tls_contexts(&g_tls_context);
if (ret < 0)
{
return -1;
}
ret = send_https_request(&g_tls_context, APP_HTTPS_WGET_URL);
if (ret < 0)
{
return -1;
}

/* ------------------------------------------------------
* 3. spresense cold sleep (Keep the connection to LTE)
* ------------------------------------------------------
*/
/* Save to file the secure socket context needed to receive a HTTP
* response after resuming from sleep.
*/

/* LTE module entering hibernation mode */
ret = save_tls_contexts(&g_tls_context);
if (ret < 0)
{
return -1;
}

printf("Entering LTE hibernation mode.\n");
/* ------------------------------------------------------
* 3. spresense cold sleep (Keep the connection to LTE)
* ------------------------------------------------------
*/

ret = lte_enter_hibernation();
if (ret < 0)
{
return -1;
}
/* LTE module entering hibernation mode */

/* Entering cold sleep */
printf("Entering LTE hibernation mode.\n");

boardctl(BOARDIOC_POWEROFF, 1);
ret = lte_enter_hibernation();
if (ret < 0)
{
return -1;
}

/* Entering cold sleep */

boardctl(BOARDIOC_POWEROFF, 1);

return 0;
}

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