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0975255f86
These MCUs only clear the RX idle IRQ if the data register is read, which won't occur if the only IRQ is the RX idle IRQ (because then reading and discarding the DR may lead to lost data). To work around this, explicitly suppress the RX idle IRQ so that it's only passed through to the Python callback once. Signed-off-by: Damien George <damien@micropython.org>