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set the pin defaults properly to reduce current consumption on
sleeping M12s.
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@ -70,6 +70,17 @@ int main(void) {
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PRINTF("trim xtal for M12\n\r");
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CRM->XTAL_CNTLbits.XTAL_CTUNE = (M12_CTUNE_4PF << 4) | M12_CTUNE;
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CRM->XTAL_CNTLbits.XTAL_FTUNE = M12_FTUNE;
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/* configure pullups for low power */
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GPIO->FUNC_SEL.GPIO_63 = 3;
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GPIO->PAD_PU_SEL.GPIO_63 = 0;
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GPIO->FUNC_SEL.SS = 3;
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GPIO->PAD_PU_SEL.SS = 1;
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GPIO->FUNC_SEL.VREF2H = 3;
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GPIO->PAD_PU_SEL.VREF2H = 1;
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GPIO->FUNC_SEL.U1RTS = 3;
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GPIO->PAD_PU_SEL.U1RTS = 1;
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} else {
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/* econotag I */
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PRINTF("trim xtal for Econotag I\n\r");
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