ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Workaround to reset UARTE peripheral to be able to go into deep sleep

pull/11790/head
Rob Vlaar 2019-10-31 08:40:34 +01:00 committed by Martin Kojtal
parent 764cdcf94a
commit 6f31229f48
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/serial_api.c
View File

@ -1009,6 +1009,21 @@ void serial_free(serial_t *obj)
if (nordic_nrf5_uart_state[instance].usage_counter == 0) {
nrf_uarte_disable(nordic_nrf5_uart_register[instance]);
/* Turn NRF_UARTE0_BASE or NRF_UARTE1_BASE power off and on to reset peripheral. */
if (instance == 0) {
*(volatile uint32_t *)0x40002FFC = 0;
*(volatile uint32_t *)0x40002FFC;
*(volatile uint32_t *)0x40002FFC = 1;
}
#if UART1_ENABLED
else {
*(volatile uint32_t *)0x40028FFC = 0;
*(volatile uint32_t *)0x40028FFC;
*(volatile uint32_t *)0x40028FFC = 1;
}
#endif
}
}
}