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GW5A. Add CPU/SSPI contact mode switching. #363

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Merged
merged 1 commit into from
Jul 30, 2025
Merged

GW5A. Add CPU/SSPI contact mode switching. #363

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1 change: 1 addition & 0 deletions apycula/attrids.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1191,6 +1191,7 @@
'I2C_AS_GPIO': 20,
'JTAG_EN': 21,
'POR': 24, # power on reset
'CPU_AS_GPIO': 28,
}

cfg_attrvals = {
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6 changes: 5 additions & 1 deletion apycula/gowin_pack.py
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Expand Up @@ -2990,7 +2990,8 @@ def gsr(db, tilemap, args):

def dualmode_pins(db, tilemap, args):
pin_flags = {'JTAG_AS_GPIO': 'UNKNOWN', 'SSPI_AS_GPIO': 'UNKNOWN', 'MSPI_AS_GPIO': 'UNKNOWN',
'DONE_AS_GPIO': 'UNKNOWN', 'RECONFIG_AS_GPIO': 'UNKNOWN', 'READY_AS_GPIO': 'UNKNOWN'}
'DONE_AS_GPIO': 'UNKNOWN', 'RECONFIG_AS_GPIO': 'UNKNOWN', 'READY_AS_GPIO': 'UNKNOWN',
'CPU_AS_GPIO': 'UNKNOWN'}
if args.jtag_as_gpio:
pin_flags['JTAG_AS_GPIO'] = 'YES'
if args.sspi_as_gpio:
Expand All @@ -3003,6 +3004,8 @@ def dualmode_pins(db, tilemap, args):
pin_flags['DONE_AS_GPIO'] = 'YES'
if args.reconfign_as_gpio:
pin_flags['RECONFIG_AS_GPIO'] = 'YES'
if args.cpu_as_gpio:
pin_flags['CPU_AS_GPIO'] = 'YES'

set_attrs = set()
clr_attrs = set()
Expand Down Expand Up @@ -3057,6 +3060,7 @@ def main():
parser.add_argument('--ready_as_gpio', action = 'store_true')
parser.add_argument('--done_as_gpio', action = 'store_true')
parser.add_argument('--reconfign_as_gpio', action = 'store_true')
parser.add_argument('--cpu_as_gpio', action = 'store_true')
if pil_available:
parser.add_argument('--png')

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2 changes: 1 addition & 1 deletion examples/gw5a/Makefile
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Expand Up @@ -16,7 +16,7 @@ clean:
# ============================================================
# TangPrimer25k
%-primer25k.fs: %-primer25k.json
gowin_pack -d GW5A-25A -o $@ $<
gowin_pack -d GW5A-25A --cpu_as_gpio -o $@ $<

%-primer25k.json: %-primer25k-synth.json primer25k.cst
$(NEXTPNR) -v --debug --top top --json $< --write $@ --device GW5A-LV25MG121NES --vopt cst=primer25k.cst
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