michaelh/zephyr
1
0
Fork 0
Code Releases Activity

logging: rtt: Fix backend behavior when LOG_IMMEDIATE enabled

Browse source 
Backend was not initialized to work in synchronous mode if LOG_IMMEDIATE
was enabled. That causes use of rtt_lock which uses mutex. That lead to
assert in application.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruscinski 2019-03-13 08:21:00 +01:00 • committed by Kumar Gala
commit d915fa0c35
1 changed files with 8 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

17
subsys/logging/log_backend_rtt.c
View file

@ -51,8 +51,7 @@ static u8_t *line_pos;
static u8_t char_buf[CHAR_BUF_SIZE];
static int drop_cnt;
static int drop_warn;
static int panic_mode;
static bool sync_mode;
static bool host_present;
static int data_out_block_mode(u8_t *data, size_t length, void *ctx);
@ -66,7 +65,7 @@ static int data_out_drop_mode(u8_t *data, size_t length, void *ctx)
(void) ctx;
u8_t *pos;
if (panic_mode) {
if (sync_mode) {
return data_out_block_mode(data, length, ctx);
}
@ -142,7 +141,7 @@ static void on_failed_write(int retry_cnt)
{
if (retry_cnt == 0) {
host_present = false;
} else if (panic_mode) {
} else if (sync_mode) {
k_busy_wait(USEC_PER_MSEC * RETRY_DELAY_MS);
} else {
k_sleep(RETRY_DELAY_MS);
@ -152,7 +151,7 @@ static void on_failed_write(int retry_cnt)
static void on_write(int retry_cnt)
{
host_present = true;
if (panic_mode) {
if (sync_mode) {
/* In panic mode block on each write until host reads it. This
* way it is ensured that if system resets all messages are read
* by the host. While pending on data being read by the host we
@ -172,14 +171,14 @@ static int data_out_block_mode(u8_t *data, size_t length, void *ctx)
int retry_cnt = RETRY_CNT;
do {
if (!panic_mode) {
if (!sync_mode) {
RTT_LOCK();
}
ret = SEGGER_RTT_WriteSkipNoLock(CONFIG_LOG_BACKEND_RTT_BUFFER,
data, length);
if (!panic_mode) {
if (!sync_mode) {
RTT_UNLOCK();
}
@ -232,14 +231,14 @@ static void log_backend_rtt_init(void)
}
host_present = true;
panic_mode = 0;
sync_mode = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ? true : false;
line_pos = line_buf;
}
static void panic(struct log_backend const *const backend)
{
log_output_flush(&log_output);
panic_mode = 1;
sync_mode = true;
}
static void dropped(const struct log_backend *const backend, u32_t cnt)