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# Picadea control and monitor shell
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Shell commands:
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key | Function | Arguments | Notes
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----|------------------|--------------------------------------------|----------------------------------------------------------
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q | quit | |
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? | print usage | |
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w | write | (i2c_addr) (reg_addr) (data0) ... (dataN) |
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r | read | (i2c_addr) (src) (reg_addr) (byteN) | See [Memory Source Id Table](#memory-source-id-table).
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v | note-on | (pitch) (vel) |
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u | note-on | (pitch) (usec) (div) | See [Pulse Timer Divisor Table](#pulse-timer-divisor).
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o | note-off | (pitch) |
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T | set table | (pitch) (vel) (usec) |
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t | get table | (pitch) (vel) |
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D | set duty | (pitch) (percent) {(hz) {(div)}} |
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d | get duty | (pitch) |
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H | set hold delay | (pitch) (usec) |
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h | get hold delay | (pitch) |
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F | set pwm freq | (pitch) (hz) | 254=~123Hz
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f | get pwm freq | (pitch) |
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I | set pwm div | (pitch) (div) | See [PWM Divisor Table](#pwm-divisor).
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i | get pwm div | (pitch) |
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A | set flags | (pitch) (flags) |
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a | get flags | (pitch) |
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W | write table | (pitch) |
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N | note w/ duration | (pitch) (atkUs) (durMs) |
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S | seq | (pitch) (atkUs) (durMs) (deltaUs) (noteN) |
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L | log | (level) (0-1) |
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## PWM Divisor
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Value | Div | Frequency | Period
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------|------|-------------|-------
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1 | 1 | 16 M | 62.5 n
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2 | 2 | 8 M | 125 n
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3 | 4 | 4 M | 250 n
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4 | 8 | 2 M | 500 n
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5 | 16 | 1 M | 1 u
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6 | 32 | 500 K | 2 u
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7 | 64 | 250 K | 4 u
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8 | 128 | 125 K | 8 u
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9 | 256 | 62500 Hz | 16 u
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10 | 512 | 31250 Hz | 32 u
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11 | 1024 | 15625 Hz | 64 u
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12 | 2048 | 7812.5 Hz | 128 u
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13 | 4096 | 3906.25 Hz | 256 u
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14 | 8192 | 1953.125 Hz | 512 u
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15 |16384 | 976.6625 Hz | 1024 u
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## Pulse Timer Divisor
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Value | Divisor | Frequency | Period
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------|---------|------------|--------------
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1 | 1 | 16000000 | 62.5n
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2 | 8 | 2000000 | 500.0n
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3 | 64 | 250000 | 4.0u
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4 | 256 | 62500 | 16.0u
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5 | 1024 | 15625 | 64.0u
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## Memory Source Id Table
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Id | Memory | Note
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---|----------------|-------------------------------
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0 | Register file | See register table file
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1 | Velocity table | MIDI velocity to pulse ticks lookup table
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2 | EEPROM | EEPROM data memory
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## Memory Destination Id Table
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Id | Memory | Note
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---|----------------|-------------------------------
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4 | Register file | See register table file
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5 | Velocity table | MIDI velocity to pulse ticks lookup table
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6 | EEPROM | EEPROM data memory
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@ -3,9 +3,6 @@
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Arguments in curly braces are optional.
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------------------------------------------------------------------------------------------
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__Hold PWM Duty Cycle__
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Function | Opcode | Arguments
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-------------------------|--------|---------------------------
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@ -19,6 +16,7 @@ Arguments | Range | Default | Note
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PWM frequency and period for each possible (div) setting.
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Reg. | | Base |
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Value | Div | Frequency | Period
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------|------|-------------|-------
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1 | 1 | 16 M | 62.5 n
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@ -37,9 +35,6 @@ Value | Div | Frequency | Period
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14 | 8192 | 1953.125 Hz | 512 u
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15 |16384 | 976.6625 Hz | 1024 u
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------------------------------------------------------------------------------------------
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__Note-on Velocity__
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Function | Opcode | Arguments
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-------------------------|--------|---------------------------
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@ -53,9 +48,6 @@ Execute a note onset.
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The (vel) value is translated to an attack pulse duration
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by looking up the pulse tick count in the velocity table.
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------------------------------------------------------------------------------------------
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__Note-on Microseconds__
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Function | Opcode | Arguments
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-------------------------|--------|-------------------------------------------------
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@ -75,10 +67,6 @@ ticks to micoseconds:
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usecs = (pulse-ticks * 1e6)*(256/16e6)
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------------------------------------------------------------------------------------------
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__Note-off__
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Function | Opcode | Arguments
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-------------------------|--------|---------------------------
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Note off | 3 | None
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@ -86,10 +74,6 @@ Note off | 3 | None
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Turn off a sounding note by settting the hold-voltage to 0.
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------------------------------------------------------------------------------------------
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__Set Read Address__
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Function | Opcode | Arguments
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-------------------------|--------|---------------------------
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Set read address | 4 | (src) {(addr)}
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@ -98,76 +82,34 @@ Set the source and address of the next I2C read request.
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The read can come from one of three memory banks:
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Register File, MIDI velocity table or EEPROM.
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See the _Memory Source Id Table_ below for the (src) id values.
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See the _Memory Location Id_ table below for the (src) id values.
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Arguments | Range | Default | Note
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------------|-------|---------|-------------------------------------------------------
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(src) | 0-2 | n/a | Memory location id. See _Memory Source Id Table_.
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(src) | 0-2 | n/a | Memory location id. See _Memory Location Id_ table.
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(addr) | 0-255 | n/a | Offset from base address set by (src)
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Memory Source Id Table
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Id | Memory | Note
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---|----------------|-------------------------------
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0 | Register file | See register table file
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1 | Velocity table | MIDI velocity to pulse ticks lookup table
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2 | EEPROM | EEPROM data memory
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------------------------------------------------------------------------------------------
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__Write Memory__
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Function | Opcode | Arguments
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-------------------------|--------|--------------------------------------------
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Write memory | 5 | (addrFl + dest) {(addr)} (value0) ... (valueN)
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Arguments | Range | Default | Note
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------------|-------|---------|----------------------------------------------------------------
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(addrFl) | 0,127 | 0 | Address flag. Set if second byte is an (addr) and not (value0)
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(dest) | 0-2 | n/a | Memory destination location. See _Memory Destination Id Table_.
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(addr) | 0-255 | n/a | Optional offset from base address set by (dest)
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Memory Destination Id Table
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Id | Memory | Note
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---|----------------|-------------------------------
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4 | Register file | See register table file
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5 | Velocity table | MIDI velocity to pulse ticks lookup table
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6 | EEPROM | EEPROM data memory
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------------------------------------------------------------------------------------------
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__Write Velocity Table to EEPROM__
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Function | Opcode | Arguments
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-------------------------|--------|---------------------------
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Write velocity table | 6 |
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Writes the MIDI velocity table from memory to EEPROM.
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Write memory | 5 |
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------------------------------------------------------------------------------------------
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__Set Hold Delay__
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Function | Opcode | Arguments
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-------------------------|--------|---------------------------
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Set hold delay | 7 | { high {low}}
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Set hold delay | 6 | { high {low}}
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Set the length of the delay, in ticks, between when the attack pulse ends and when the
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hold voltage is applied.
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The high and low byte values are calculated identically to the
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attack pulse duration values.
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------------------------------------------------------------------------------------------
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__Set *flags* variable__
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Function | Opcode | Arguments
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-------------------------|--------|---------------------------
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Set flags variable | 8 | (flags)
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Set flags variable | 7 | (flags)
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7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
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-----|-----|-----|-----|-----|-----|-----|-----
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@ -175,10 +117,8 @@ Set flags variable | 8 | (flags)
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_HOA_ : Set to apply the hold voltage at the beginning of the attack.
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------------------------------------------------------------------------------------------
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## Register File Address
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Register file
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Address | Label | Note
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--------|-----------------|------------------------------------------------------------------------------------------------
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@ -204,16 +144,13 @@ Address | Label | Note
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19 | Flags_Addr | Binary variable field.
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------------------------------------------------------------------------------------------
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## Memory Destination Id table
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Memory Location Id table.
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Id | Memory | Note
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---|----------------|-------------------------------
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4 | Register file | See register table file
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5 | Velocity table | MIDI velocity to pulse ticks lookup table
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6 | EEPROM | EEPROM data memory
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0 | Register file | See register table file
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1 | Velocity table | MIDI velocity to pulse ticks lookup table
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2 | EEPROM | EEPROM data memory
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