Difference between revisions of "UART Control"
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{{Port | {{Port | ||
|Number=$153B | |Number=$153B | ||
| + | |NumberDec=5435 | ||
| + | |PortMask=%0001 0101 0011 1011 | ||
|ShortDesc=Configuration of UART interfaces | |ShortDesc=Configuration of UART interfaces | ||
|Readable=Yes | |Readable=Yes | ||
|Writable=Yes | |Writable=Yes | ||
|Subsystem=UART | |Subsystem=UART | ||
| − | |||
}} | }} | ||
: bit 6 = 0 to select the esp uart, 1 to select the pi uart † | : bit 6 = 0 to select the esp uart, 1 to select the pi uart † | ||
| Line 14: | Line 15: | ||
† either uart can be redirected to the joystick ports, see {{PortNo|$xx37}} | † either uart can be redirected to the joystick ports, see {{PortNo|$xx37}} | ||
| + | |||
| + | The remaining 14-bits of prescalar value can be written by {{PortNo|$143B}} | ||
Latest revision as of 11:16, 4 May 2020
| Number | $153B |
|---|---|
| Decimal | 5435 |
| Short desc. | Configuration of UART interfaces |
| Bit Mask | %0001 0101 0011 1011 |
| Readable | Yes |
| Writable | Yes |
| Subsystem | UART |
- bit 6 = 0 to select the esp uart, 1 to select the pi uart †
- bit 4 = 1 if the bits 2:0 are being written
- bits 2:0 = most significant bits of the 17-bit prescalar setting baud rate
pi gpio must be configured for uart, see Pi Peripheral Enable Register ($A0)
† either uart can be redirected to the joystick ports, see Kempston Joystick 2, Joystick I/O ($xx37 / 55)
The remaining 14-bits of prescalar value can be written by UART RX ($143B / 5179)