 H. Peter Anvin
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03fae78888
hack: binary counter on ESP pins to test connectivity
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3 years ago |
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H. Peter Anvin
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3608e21183
Add extended devices (xdevs) that require > 128 bytes
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3 years ago |
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H. Peter Anvin
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f3992b85ad
sdcard: run in slow mode (400 kHz during initialization)
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3 years ago |
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H. Peter Anvin
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4cc5301813
sdcard: generalize the IP, instantiate for ESP32 SPI channel too
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3 years ago |
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H. Peter Anvin
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518503fa99
iodev: centralize definitions and auto-generate boiler plate code
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3 years ago |
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H. Peter Anvin
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74ebfc9b60
fw: allow optimization if IRQ_VECTORS < 32
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3 years ago |
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H. Peter Anvin
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bc09800c11
fw: make sure to clear the timer IRQ counter on init...
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3 years ago |
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H. Peter Anvin
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9535001a01
fw: force instructions in irqasm.S to be aligned
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3 years ago |
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H. Peter Anvin
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d3cac913de
fw: prevent invalid linker relaxation in irqasm.S
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3 years ago |
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H. Peter Anvin
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555a856ff4
fw: move .sdata/.sbss into the zero page
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3 years ago |
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H. Peter Anvin
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211ec5e0c8
fw: set gp for the IRQ bank too
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3 years ago |
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H. Peter Anvin
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2efc87efde
Add irqasm.S... still no interrupts, but no crashes either...
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3 years ago |
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H. Peter Anvin
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cd15d8fd49
picorv32: revamp the Q registers to be a full bank switch
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3 years ago |
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H. Peter Anvin
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bcefeb445b
Switch to aggressive optimization to improve timing
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3 years ago |
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H. Peter Anvin
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996bd201be
Timing improvements: wait state for iodev, fix handling of sr_clk
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3 years ago |
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H. Peter Anvin
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75980f5efb
fw: now working interrupt handling, periodic timer flashing LEDs
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3 years ago |
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H. Peter Anvin
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7c6cbc57c6
fpga/max80: 32 kHz RTC clock isn't working, workaround
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3 years ago |
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H. Peter Anvin
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8ead1845e1
fpga/sysclock: fix off-by-one in periodic pulse generation
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3 years ago |
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H. Peter Anvin
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f48fe1c4cf
fpga: disable pull resistors for SPI to flash chip
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3 years ago |
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H. Peter Anvin
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ea8bf559a9
picorv32: fix aliasing of mret = retirq
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3 years ago |
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H. Peter Anvin
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7f9ba1c3cd
Update FPGA generated files
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3 years ago |
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H. Peter Anvin
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2b261e54f6
fw: add interrupt support; use a linker script
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3 years ago |
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H. Peter Anvin
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0cf198bfb2
picorv32: have maskirq take a control mask; let mret = retirq
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3 years ago |
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H. Peter Anvin
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105317a04c
sdcard: works now! (At least reading)
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3 years ago |
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H. Peter Anvin
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6ead9a1ad1
sdcard: fix switching to high speed mode
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3 years ago |
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H. Peter Anvin
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8a937a6f83
sdcard: now talking to the SD card; driver fixes still needed
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3 years ago |
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H. Peter Anvin
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6a406133f0
Add sdcard and sysclock units; reshuffle address map
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3 years ago |
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H. Peter Anvin
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9093b88195
Add ELM-Chan FatFS 0.14b explicitly
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3 years ago |
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H. Peter Anvin
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3673cdd132
Remove fatfs as a submodule. It is small and needs edits.
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3 years ago |
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H. Peter Anvin
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65f412c5d0
Add sdcard unit; currently SPI based
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3 years ago |
