Update develop. Ready for pre-release v0.4 #49
@ -34,7 +34,8 @@
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enum hw_revision get_pcb_hardware_version(void)
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{
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uint8_t current_pin;
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uint16_t port_bitmask = 0U;
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uint16_t port_bitmask = 0U; /* Use uint16_t because a port can have 16 IOs max. */
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const uint16_t highest_bit_mask = (1 << (HW_REV_DETECT_PIN_HIGH - HW_REV_DETECT_PIN_LOW));
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static enum hw_revision revision = HW_REV_NOT_DETECTED;
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/* If the revision has been previously detected,
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@ -57,7 +58,7 @@ enum hw_revision get_pcb_hardware_version(void)
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*/
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for (current_pin = HW_REV_DETECT_PIN_LOW; current_pin <= HW_REV_DETECT_PIN_HIGH; current_pin++) {
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port_bitmask >>= 1;
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port_bitmask |= (HW_REV_DETECT_GPIO->IDR & (1 << current_pin)) ? 0x0 : 0x80;
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port_bitmask |= (HW_REV_DETECT_GPIO->IDR & (1 << current_pin)) ? 0x0 : highest_bit_mask;
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}
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/* Resolve the read in bitmask to a hardware version */
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