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Move microcontroller subcircuit to separate file
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| # SPDX-FileCopyrightText: 2024-present adamws <adamws@users.noreply.github.com> | ||
| # | ||
| # SPDX-License-Identifier: MIT |
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| # SPDX-FileCopyrightText: 2024-present adamws <adamws@users.noreply.github.com> | ||
| # | ||
| # SPDX-License-Identifier: MIT | ||
| import sys | ||
|
|
||
| import skidl | ||
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|
||
| ATMEGA32U4AU_PIN_ASSIGN_ORDER = [ | ||
| "PB0", | ||
| "PB1", | ||
| "PB2", | ||
| "PB3", | ||
| "PB4", | ||
| "PB5", | ||
| "PB6", | ||
| "PB7", | ||
| "PC6", | ||
| "PC7", | ||
| "PD0", | ||
| "PD1", | ||
| "PD2", | ||
| "PD3", | ||
| "PD4", | ||
| "PD5", | ||
| "PD6", | ||
| "PD7", | ||
| "PF0", | ||
| "PF1", | ||
| "PF4", | ||
| "PF5", | ||
| "PF6", | ||
| "PF7", | ||
| ] | ||
|
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||
|
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| @skidl.subcircuit | ||
| def atmega32u4_au_v1(rows, columns): | ||
| assignment_order = ATMEGA32U4AU_PIN_ASSIGN_ORDER[:] | ||
| variant = "atmega32u4_au_v1" | ||
| num_rows = len(rows) | ||
| num_columns = len(columns) | ||
| num_pins = len(assignment_order) | ||
| if num_rows + num_columns > num_pins: | ||
| msg = ( | ||
| f"Controller circuit '{variant}' can't handle requested matrix, " | ||
| f"available pins: {num_pins}, required: " | ||
| f"{num_rows} (rows) + {num_columns} (columns)" | ||
| ) | ||
| raise RuntimeError(msg) | ||
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| # create templates | ||
| C = skidl.Part( | ||
| "Device", | ||
| "C", | ||
| skidl.TEMPLATE, | ||
| footprint="Capacitor_SMD:C_0603_1608Metric", | ||
| ) | ||
| R = skidl.Part( | ||
| "Device", | ||
| "R", | ||
| skidl.TEMPLATE, | ||
| footprint="Resistor_SMD:R_0603_1608Metric", | ||
| ) | ||
|
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| # start uc circuitry | ||
| uc = skidl.Part( | ||
| "MCU_Microchip_ATmega", | ||
| "ATmega32U4-A", | ||
| footprint="Package_QFP:TQFP-44_10x10mm_P0.8mm", | ||
| ) | ||
| vcc = skidl.Net("VCC") | ||
| gnd = skidl.Net("GND") | ||
|
|
||
| vcc += uc["UVCC", "VCC", "AVCC", "VBUS"] | ||
| gnd += uc["UGND", "GND"] | ||
|
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||
| # crystal oscillator | ||
| crystal = skidl.Part( | ||
| "Device", | ||
| "Crystal_GND24", | ||
| footprint="Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm", | ||
| ) | ||
| c1, c2 = C(num_copies=2, value="22p") | ||
|
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| net_xtal1 = skidl.Net("mcu/XTAL1") | ||
| net_xtal1 += c1[1], crystal[1], uc["XTAL1"] | ||
| net_xtal2 = skidl.Net("mcu/XTAL2") | ||
| net_xtal2 += c2[1], crystal[3], uc["XTAL2"] | ||
| gnd += c1[2], c2[2], crystal[2], crystal[4] | ||
|
|
||
| # decoupling capacitors | ||
| c3, c4, c5, c6 = C(num_copies=4, value="0.1u") | ||
| c7 = C(value="4.7u") | ||
|
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||
| for c in [c3, c4, c5, c6, c7]: | ||
| vcc += c[1] | ||
| gnd += c[2] | ||
|
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||
| # ucap | ||
| c8 = C(value="1u") | ||
| net_ucap = skidl.Net("mcu/UCAP") | ||
| net_ucap += c8[1], uc["UCAP"] | ||
| gnd += c8[2] | ||
|
|
||
| # usb | ||
| usb = skidl.Part( | ||
| "Connector", | ||
| "USB_C_Receptacle_USB2.0_14P", | ||
| footprint="Connector_USB:USB_C_Receptacle_XKB_U262-16XN-4BVC11", | ||
| ) | ||
| esd_protection = skidl.Part( | ||
| "Power_Protection", "TPD2S017", footprint="Package_TO_SOT_SMD:SOT-23-6" | ||
| ) | ||
| r1, r2 = R(num_copies=2, value="22") | ||
|
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| vcc += usb["VBUS"], esd_protection["VCC"] | ||
| gnd += usb["GND", "SHIELD"], esd_protection["GND"] | ||
|
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| net_usb_dm = skidl.Net("usb/D-") | ||
| net_usb_dm += usb["D-"], esd_protection["CH1In"] | ||
|
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| net_usb_dp = skidl.Net("usb/D+") | ||
| net_usb_dp += ( | ||
| usb["D+"], | ||
| esd_protection["CH2Int"], | ||
| ) # CH2Int -> bug in footprint pin name? | ||
|
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| net_esd_dm = skidl.Net("u2/D-") | ||
| net_esd_dm += esd_protection["CH1Out"], r1[2] | ||
|
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| net_esd_dp = skidl.Net("u2/D+") | ||
| net_esd_dp += esd_protection["CH2Out"], r2[2] | ||
|
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| net_uc_dm = skidl.Net("mcu/D-") | ||
| net_uc_dm += r1[1], uc["D-"] | ||
|
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| net_uc_dp = skidl.Net("mcu/D+") | ||
| net_uc_dp += r2[1], uc["D+"] | ||
|
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||
| # pe2 and reset | ||
| r3, r4 = R(num_copies=2, value="10k") | ||
| button = skidl.Part( | ||
| "Switch", | ||
| "SW_SPST", | ||
| footprint="Button_Switch_SMD:SW_SPST_TL3342", | ||
| ref="RST", | ||
| ) | ||
|
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| net_hwb = skidl.Net("mcu/~{HWB}/PE2") | ||
| net_hwb += uc["~{HWB}/PE2"], r3[1] | ||
| gnd += r3[2] | ||
|
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| net_reset = skidl.Net("mcu/~{RESET}") | ||
| net_reset += uc["~{RESET}"], r4[1], button[2] | ||
| vcc += r4[2] | ||
| gnd += button[1] | ||
|
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| for _, row in rows.items(): | ||
| row += uc[assignment_order.pop(0)] | ||
| for _, column in columns.items(): | ||
| column += uc[assignment_order.pop(0)] |
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