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Update am_hal_uart.c #32

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12 changes: 11 additions & 1 deletion mcu/apollo3/hal/am_hal_uart.c
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Original file line number Diff line number Diff line change
Expand Up @@ -334,7 +334,17 @@ am_hal_uart_power_control(void *pHandle,
// Clear all interrupts before sleeping as having a pending UART
// interrupt burns power.
//
am_hal_uart_interrupt_clear(pState, 0xFFFFFFFF);
am_hal_uart_interrupt_clear(pState, 0xFFFFFFFF);

//
// The call to am_hal_pwrctrl_periph_disable will leave some values
// of the UARTn->CR register powered up which causes hte current
// draw to be 2-3oonA higher than expected.
//
// the below adjustment is acceptable since the pState->sRegState.regCR
// will retain the state if requested.
//
UARTn(ui32Module)->CR = 0;

//
// Disable power control.
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