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Update software description with timer API changes

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Joachim Strömbergson 2022-10-13 15:22:52 +02:00
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doc/system_description/software.md
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@ -306,37 +306,36 @@ Assigned core prefixes:
*Nota bene*: All MMIO accesses should be 32 bit wide, e.g use `lw` and `sw`.
| *name* | *fw* | *app | *size* | *type* | *content* | *description* |
|--------------------|------|------------|--------|---------|-----------|--------------------------------------------------------|
| `TRNG_STATUS` | r | r | | | | Non-zero when an entropy word is available. |
| `TRNG_ENTROPY` | r | r | | | | Entropy word. Reading a word will clear status. |
| `TIMER_CTRL` | | | | | | TBD |
| `TIMER_STATUS` | r | | | | | TBD |
| `TIMER_PRESCALER` | | r/w | | | | TBD |
| `TIMER_TIMER` | | r | | | | TBD |
| `UDS_START` | r[^2]| invisible | 4B | u8[32] | | First word of Unique Device Secret key. |
| `UDS_LAST` | | invisible | | | | The last word of the UDS |
| `UART_BITRATE` | r/w | | | | | TBD |
| `UART_DATABITS` | r/w | | | | | TBD |
| `UART_STOPBITS` | r/w | | | | | TBD |
| `UART_RX_STATUS` | r | r | 1B | u8 | | Non-zero when there is data to read |
| `UART_RX_DATA` | r | r | 1B | u8 | | Data to read. Only LSB contains data |
| `UART_TX_STATUS` | r | r | 1B | u8 | | Non-zero when it's OK to write data |
| `UART_TX_DATA` | w | w | 1B | u8 | | Data to send. Only LSB contains data |
| `TOUCH_STATUS` | r/w | r/w | | | | STATUS_EVENT_BIT set 1 when touched; write to it after |
| `UDA` | r | | 16B | u8[16] | | Unique Device Authentication key. |
| `UDI` | r | | 8B | u64 | | Unique Device ID (UDI). |
| `QEMU_DEBUG` | w | w | | u8 | | Debug console (only in QEMU) |
| `NAME0` | r | r | 4B | char[4] | "mta1" | ID of core/stick |
| `NAME1` | r | r | 4B | char[4] | "mkdf" | ID of core/stick |
| `VERSION` | r | r | 4B | u32 | 1 | Current version. |
| `SWITCH_APP` | w | invisible? | 1B | u8 | | Switch to application mode. Write non-zero to trigger. |
| `LED` | w | w | 1B | u8 | | |
| `GPIO` | | | | | | |
| `APP_ADDR` | r/w | r | 4B | u32 | | Application address (0x4000_0000) |
| `APP_SIZE` | r/w | r | 4B | u32 | | Application size |
| `DEBUG` | | | | | | TBD |
| `CDI_START` | r/w | r | 32B | u8[32] | | Compound Device Identifier (CDI). UDS+measurement... |
| `CDI_LAST` | | r | | | | Last word of CDI |
| *name* | *fw* | *app | *size* | *type* | *content* | *description* |
|--------------------|------|------------|--------|---------|-----------|-----------------------------------------------------------------------|
| `TRNG_STATUS` | r | r | | | | Non-zero when an entropy word is available. |
| `TRNG_ENTROPY` | r | r | 4B | | | Entropy word. Reading a word will clear status. |
| `TIMER_CTRL` | r/w | r/w | | | | If bit zero is set timer is running. |
| `TIMER_STATUS` | r | r | | | | Bit zero is set if ready to start running. |
| `TIMER_PRESCALER` | r/w | r/w | 4B | | | Prescaler init value. Write blocked when running. |
| `TIMER_TIMER` | r/w | r/w | 4B | | | Timer init or current value when running. Write blocked when running. |
| `UDS_START` | r[^2]| invisible | 4B | u8[32] | | First word of Unique Device Secret key. |
| `UDS_LAST` | | invisible | | | | The last word of the UDS |
| `UART_BITRATE` | r/w | | | | | TBD |
| `UART_DATABITS` | r/w | | | | | TBD |
| `UART_STOPBITS` | r/w | | | | | TBD |
| `UART_RX_STATUS` | r | r | 1B | u8 | | Non-zero when there is data to read |
| `UART_RX_DATA` | r | r | 1B | u8 | | Data to read. Only LSB contains data |
| `UART_TX_STATUS` | r | r | 1B | u8 | | Non-zero when it's OK to write data |
| `UART_TX_DATA` | w | w | 1B | u8 | | Data to send. Only LSB contains data |
| `TOUCH_STATUS` | r/w | r/w | | | | STATUS_EVENT_BIT set 1 when touched; write to it after |
| `UDA` | r | | 16B | u8[16] | | Unique Device Authentication key. |
| `UDI` | r | | 8B | u64 | | Unique Device ID (UDI). |
| `QEMU_DEBUG` | w | w | | u8 | | Debug console (only in QEMU) |
| `NAME0` | r | r | 4B | char[4] | "mta1" | ID of core/stick |
| `NAME1` | r | r | 4B | char[4] | "mkdf" | ID of core/stick |
| `VERSION` | r | r | 4B | u32 | 1 | Current version. |
| `SWITCH_APP` | w | invisible? | 1B | u8 | | Switch to application mode. Write non-zero to trigger. |
| `LED` | w | w | 1B | u8 | | |
| `GPIO` | | | | | | |
| `APP_ADDR` | r/w | r | 4B | u32 | | Application address (0x4000_0000) |
| `APP_SIZE` | r/w | r | 4B | u32 | | Application size |
| `CDI_START` | r/w | r | 32B | u8[32] | | Compound Device Identifier (CDI). UDS+measurement... |
| `CDI_LAST` | | r | | | | Last word of CDI |
[^2]: The UDS can only be read *once* per power-cycle.