Ergogen: Rework layout for eepyBoard rev2
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3 changed files with 619 additions and 387 deletions
182
ergogen/footprints/rp2040_pico_mini.js
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182
ergogen/footprints/rp2040_pico_mini.js
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// Pin header footprint for a small RP2040-based controller board from AliExpress called "Pico Mini RP2040".
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// It has a similar footprint to the Pro Micro (NOT pin-compatible though!), but has an additional row of pins
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// on the short edge of the board (basically forming a "U").
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// -------------------------------
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// Params
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// orientation: if up (default), the controller will be on the front side of the PCB, otherwise on the back side
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module.exports = {
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params: {
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designator: 'MCU',
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orientation: 'up',
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// Left side of pins (with USB port at the top), top to bottom
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GP0: {type: 'net', value: 'GP0'},
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GP1: {type: 'net', value: 'GP1'},
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GP2: {type: 'net', value: 'GP2'},
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GP3: {type: 'net', value: 'GP3'},
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GP4: {type: 'net', value: 'GP4'},
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GP5: {type: 'net', value: 'GP5'},
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GP6: {type: 'net', value: 'GP6'},
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GP7: {type: 'net', value: 'GP7'},
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GP8: {type: 'net', value: 'GP8'},
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GP9: {type: 'net', value: 'GP9'},
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GP10: {type: 'net', value: 'GP10'},
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GP11: {type: 'net', value: 'GP11'},
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GP12: {type: 'net', value: 'GP12'},
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GP13: {type: 'net', value: 'GP13'},
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// Bottom side of pins, left to right (i.e. between GP13 and GP19)
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GP14: {type: 'net', value: 'GP14'},
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GP15: {type: 'net', value: 'GP15'},
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GP16: {type: 'net', value: 'GP16'},
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GP17: {type: 'net', value: 'GP17'},
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GP18: {type: 'net', value: 'GP18'},
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// Right side of pins (with USB port at the top), top to bottom
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'5V': {type: 'net', value: '5V'}, // 5V USB voltage
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GND: {type: 'net', value: 'GND'},
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RST: {type: 'net', value: 'RST'}, // Reset pin: Pull down to reset
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'3V3': {type: 'net', value: '3V3'}, // 3.3V voltage used by the MCU
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GP29: {type: 'net', value: 'GP29'}, // also: ADC4
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GP28: {type: 'net', value: 'GP28'}, // also: ADC2
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GP27: {type: 'net', value: 'GP27'}, // also: ADC1
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GP26: {type: 'net', value: 'GP26'}, // also: ADC0
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GP25: {type: 'net', value: 'GP25'},
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GP23: {type: 'net', value: 'GP23'},
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GP22: {type: 'net', value: 'GP22'},
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GP21: {type: 'net', value: 'GP21'},
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GP20: {type: 'net', value: 'GP20'},
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GP19: {type: 'net', value: 'GP19'},
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},
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body: p => {
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let sign, side, mirror;
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if (p.orientation === 'down') {
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sign = -1;
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side = 'B';
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mirror = 'mirror';
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} else {
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sign = 1;
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side = 'F';
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mirror = '';
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}
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const pins_left = [
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'GP0', 'GP1', 'GP2', 'GP3', 'GP4', 'GP5', 'GP6', 'GP7', 'GP8', 'GP9', 'GP10', 'GP11', 'GP12', 'GP13',
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];
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const pins_bottom = [
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'GP14', 'GP15', 'GP16', 'GP17', 'GP18',
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];
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const pins_right = [
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'5V', 'GND', 'RST', '3V3', 'GP29', 'GP28', 'GP27', 'GP26', 'GP25', 'GP23', 'GP22', 'GP21', 'GP20', 'GP19',
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];
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// Functions to map coordinates from a "pin grid" to actual X/Y coordinates.
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// The grid is defined as follows (assuming the board is in "up" orientation with the USB port on top):
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// - The X coordinates go from 0 (left) to 6 (right)
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// - The Y coordinates go from 0 (top) to 13 (bottom)
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// This means the pin rows are on these coordinates:
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// - Left side of pins: 0/0 to 0/13
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// - Right side of pins: 6/0 to 6/13
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// - Additional pins on the bottom (not counting the left and right pins): 1/13 to 5/13
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// These grid coordinates have to be mapped to footprint coordinates so that the board is centered, meaning
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// the grid position 3/6.5 needs to be mapped to footprint coordinates 0/0. The grid is a standard 2.54mm grid.
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function pin_pos_x(pin_number) {
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// Use integers to avoid floating point issues
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return sign * (254 * (pin_number - 3)) / 100;
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}
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function pin_pos_y(pin_number) {
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// Use integers to avoid floating point issues
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return (254 * (pin_number - 7) + 127) / 100;
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}
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function pin_label(pin_name, pos_x, pos_y, pin_side) {
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let offset_x = 0;
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let offset_y = 0;
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let offset_rotation = 0;
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let justify = 'left';
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if (pin_side === 'left') {
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offset_x = -1.3 * sign;
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justify = 'right';
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} else if (pin_side === 'right') {
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offset_x = 1.3 * sign;
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} else if (pin_side === 'bottom') {
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offset_y = 1.7;
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offset_rotation = -90 * sign;
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}
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// Shorten the name of the "GPxx" pins to save a bit of space on the PCB
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if (pin_name.startsWith('GP')) {
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pin_name = pin_name.slice(2);
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}
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return `
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(fp_text user ${pin_name}
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(at ${pin_pos_x(pos_x) + offset_x} ${pin_pos_y(pos_y) + offset_y} ${p.r + offset_rotation})
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(unlocked yes) (layer ${side}.SilkS)
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(effects (font (size 0.8 0.8) (thickness 0.15)) (justify ${justify} ${mirror}))
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)`;
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}
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function pin_pad(pad_number, pos_x, pos_y, pin_name) {
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return `
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(pad ${pad_number} thru_hole circle
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(at ${pin_pos_x(pos_x)} ${pin_pos_y(pos_y)} 0)
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(size 1.7526 1.7526) (drill 1.0922) (layers *.Cu *.Mask)
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${p[pin_name]}
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)`;
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}
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function render_pins() {
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let pin_label_body = '';
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let pin_pad_body = '';
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let pad_number = 1;
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for (let i = 0; i < pins_left.length; i++) {
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pin_label_body += pin_label(pins_left[i], 0, i, 'left');
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pin_pad_body += pin_pad(pad_number++, 0, i, pins_left[i]);
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}
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for (let i = 0; i < pins_bottom.length; i++) {
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pin_label_body += pin_label(pins_bottom[i], 1 + i, 13, 'bottom');
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pin_pad_body += pin_pad(pad_number++, 1 + i, 13, pins_bottom[i]);
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}
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for (let i = 0; i < pins_right.length; i++) {
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pin_label_body += pin_label(pins_right[i], 6, i, 'right');
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pin_pad_body += pin_pad(pad_number++, 6, i, pins_right[i]);
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}
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return pin_pad_body + '\n' + pin_label_body;
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}
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return `
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(module RP2040_PICO_MINI (layer F.Cu) (tedit 66FD3C6D)
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${p.at /* parametric position */}
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${'' /* footprint reference */}
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(fp_text reference "${p.ref}" (at 0 0) (layer ${side}.SilkS) ${p.ref_hide}
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(effects (font (size 1.27 1.27) (thickness 0.15)))
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)
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(fp_text value "" (at 0 0) (layer ${side}.SilkS) hide
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(effects (font (size 1.27 1.27) (thickness 0.15)))
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)
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${'' /* component outline */}
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(fp_line (start -8.8 -18.0) (end 8.8 -18.0) (layer ${side}.SilkS) (width 0.15))
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(fp_line (start 8.8 -18.0) (end 8.8 18.0) (layer ${side}.SilkS) (width 0.15))
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(fp_line (start 8.8 18.0) (end -8.8 18.0) (layer ${side}.SilkS) (width 0.15))
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(fp_line (start -8.8 18.0) (end -8.8 -18.0) (layer ${side}.SilkS) (width 0.15))
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${'' /* illustration of the USB port overhang */}
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(fp_line (start -4.3 -18.8) (end 4.3 -18.8) (layer Dwgs.User) (width 0.15))
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(fp_line (start 4.3 -18.8) (end 4.3 -11.8) (layer Dwgs.User) (width 0.15))
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(fp_line (start 4.3 -11.8) (end -4.3 -11.8) (layer Dwgs.User) (width 0.15))
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(fp_line (start -4.3 -11.8) (end -4.3 -18.8) (layer Dwgs.User) (width 0.15))
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${'' /* pin labels and pads */}
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${render_pins()}
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)
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`;
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}
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}
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