Hard fault when printing sleep info on NUCLEO-F446RE #10079
Description
Description
My board immediately hard faults after starting up when printing sleep info. Running in tickless mode, with sleep stats enabled on Mbed OS 5.11.5 (51d5550).
Application:
#include "mbed.h"
#include "mbed_stats.h"
static DigitalOut led(LED1);
static LowPowerTicker t;
void blink() {
led = !led;
}
int main() {
printf("Hello from C++\n");
t.attach(&blink, 2.0f);
while (1) {
mbed_stats_cpu_t stats;
mbed_stats_cpu_get(&stats);
// printf("Uptime: %llu ", stats.uptime / 1000);
// printf("Sleep time: %llu ", stats.sleep_time / 1000);
printf("Deep Sleep: %llu\n", stats.deep_sleep_time / 1000);
// printf("LED is %d\n", led.read());
wait_ms(5000);
}
}mbed_app:
{
"target_overrides": {
"*": {
"platform.stdio-baud-rate": 115200,
"platform.stdio-convert-newlines": true
},
"NUCLEO_F446RE": {
"target.macros_add": [
"MBED_CONF_TARGET_STDIO_UART_TX=D8",
"MBED_CONF_TARGET_STDIO_UART_RX=D2"
]
}
},
"macros": [
"MBED_TICKLESS=1",
"MBED_CPU_STATS_ENABLED=1",
"MBED_CONF_TARGET_TICKLESS_FROM_US_TICKER=0"
]
}Error message:
++ MbedOS Fault Handler ++
FaultType: HardFault
Context:
R0 : 2000106C
R1 : 00000000
R2 : 20001058
R3 : FFFFFFFF
R4 : 00000001
R5 : 20000D34
R6 : 00000003
R7 : 00000000
R8 : 00000000
R9 : 00000000
R10 : 00000000
R11 : 00000000
R12 : 08003095
SP : 200029A8
LR : 080069A3
PC : FFFFFFFE
xPSR : 01000000
PSP : 20002988
MSP : 2001FFC0
CPUID: 410FC241
HFSR : 40000000
MMFSR: 00000001
BFSR : 00000000
UFSR : 00000000
DFSR : 00000008
AFSR : 00000000
Mode : Thread
Priv : Privileged
Stack: PSP
-- MbedOS Fault Handler --
++ MbedOS Error Info ++
Error Status: 0x80FF013D Code: 317 Module: 255
Error Message: Fault exception
Location: 0x800062F
Error Value: 0xFFFFFFFE
Current Thread: main Id: 0x2000197C Entry: 0x800227B StackSize: 0x1000 StackMem: 0x200019C0 SP: 0x2001FF5C
For more info, visit: https://armmbed.github.io/mbedos-error/?error=0x80FF013D
-- MbedOS Error Info --
Which means:
Crash Info:
Crash location = __exidx_start [0xFFFFFFFE] (based on PC value)
Caller location = __libc_init_array [0x080069A3] (based on LR value)
Stack Pointer at the time of crash = [200029A8]
Target and Fault Info:
Processor Arch: ARM-V7M or above
Processor Variant: C24
Forced exception, a fault with configurable priority has been escalated to HardFault
MPU or Execute Never (XN) default memory map access violation on an instruction fetch has occurred
Issue request type
[ ] Question
[ ] Enhancement
[X] Bug