Arm ps2 mouse interrupt (#6490)
* ps2_mouse on ARM: an interrupt-version of the ps2-mouse code ported to ARM/chibios * ps2_mouse on ARM: link EXT callback-channel selection to the user defined PS2_LINE_CLOCK * ps2_mouse on ARM: replace DELAY_X defines with hardware-agnostic wait_X * ps2_mouse on ARM: replace chibios-specific defines for the pins/lines with defines from quantum/config_common.h and drop the '_LINE' component from teh define name * ps2_mouse on ARM: expose the software-intterupt port as a user editable define * Update docs/feature_ps2_mouse.md Co-Authored-By: Hugo van Kemenade <hugovk@users.noreply.github.com> * Update feature_ps2_mouse.md * use a define to deduce the PS_DATA_PORT instead * reduce all-zero extcfg to oneliner * ps2_mouse: use generic wait instead of avr-delay * Update docs/feature_ps2_mouse.md * ps2_mouse: changes for new chibios version (17.6.0 -> 19.1.0) replacing the legacy externa-interrupt driver with pal-callbacks * ps2_mouse: use PLATFORM_KEY Co-Authored-By: Joel Challis <git@zvecr.com> * ps2_mouse: clang-format corrections * ps2_mouse: add systemlocks using the chibios equivalent to AVRs cli: chSys[Unl|L]ock Co-authored-by: Johannes <you@example.com> Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com> Co-authored-by: Joel Challis <git@zvecr.com>master
JohSchneider
GitHub
parent
5bbc527460
commit
bcb6e23387
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@ -50,7 +50,7 @@ In your keyboard config.h:
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#endif
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```
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## Interrupt Version :id=interrupt-version
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### Interrupt Version (AVR/ATMega32u4) :id=interrupt-version-avr
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The following example uses D2 for clock and D5 for data. You can use any INT or PCINT pin for clock, and any pin for data.
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@ -88,7 +88,31 @@ In your keyboard config.h:
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#endif
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```
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## USART Version :id=usart-version
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### Interrupt Version (ARM chibios) :id=interrupt-version-chibios
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Pretty much any two pins can be used for the (software) interrupt variant on ARM cores. The example below uses A8 for clock, and A9 for data.
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In rules.mk:
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```
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PS2_MOUSE_ENABLE = yes
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PS2_USE_INT = yes
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```
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In your keyboard config.h:
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```c
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#define PS2_CLOCK A8
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#define PS2_DATA A9
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```
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And in the chibios specifig halconf.h:
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```c
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#define PAL_USE_CALLBACKS TRUE
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```
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### USART Version :id=usart-version
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To use USART on the ATMega32u4, you have to use PD5 for clock and PD2 for data. If one of those are unavailable, you need to use interrupt version.
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@ -14,13 +14,13 @@ endif
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ifeq ($(strip $(PS2_USE_INT)), yes)
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SRC += protocol/ps2_interrupt.c
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SRC += protocol/ps2_io_avr.c
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SRC += protocol/ps2_io_$(PLATFORM_KEY).c
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OPT_DEFS += -DPS2_USE_INT
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endif
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ifeq ($(strip $(PS2_USE_USART)), yes)
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SRC += protocol/ps2_usart.c
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SRC += protocol/ps2_io_avr.c
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SRC += protocol/ps2_io_$(PLATFORM_KEY).c
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OPT_DEFS += -DPS2_USE_USART
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endif
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@ -40,11 +40,19 @@ POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdbool.h>
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#include <avr/interrupt.h>
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#include <util/delay.h>
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#if defined(__AVR__)
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# include <avr/interrupt.h>
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#elif defined(PROTOCOL_CHIBIOS) // TODO: or STM32 ?
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// chibiOS headers
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# include "ch.h"
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# include "hal.h"
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#endif
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#include "ps2.h"
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#include "ps2_io.h"
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#include "print.h"
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#include "wait.h"
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#define WAIT(stat, us, err) \
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do { \
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@ -61,12 +69,30 @@ static inline void pbuf_enqueue(uint8_t data);
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static inline bool pbuf_has_data(void);
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static inline void pbuf_clear(void);
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#if defined(PROTOCOL_CHIBIOS)
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void ps2_interrupt_service_routine(void);
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void palCallback(void *arg) { ps2_interrupt_service_routine(); }
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# define PS2_INT_INIT() \
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{ palSetLineMode(PS2_CLOCK, PAL_MODE_INPUT); } \
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while (0)
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# define PS2_INT_ON() \
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{ \
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palEnableLineEvent(PS2_CLOCK, PAL_EVENT_MODE_FALLING_EDGE); \
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palSetLineCallback(PS2_CLOCK, palCallback, NULL); \
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} \
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while (0)
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# define PS2_INT_OFF() \
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{ palDisableLineEvent(PS2_CLOCK); } \
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while (0)
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#endif // PROTOCOL_CHIBIOS
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void ps2_host_init(void) {
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idle();
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PS2_INT_INIT();
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PS2_INT_ON();
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// POR(150-2000ms) plus BAT(300-500ms) may take 2.5sec([3]p.20)
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//_delay_ms(2500);
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// wait_ms(2500);
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}
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uint8_t ps2_host_send(uint8_t data) {
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@ -77,7 +103,7 @@ uint8_t ps2_host_send(uint8_t data) {
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/* terminate a transmission if we have */
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inhibit();
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_delay_us(100); // 100us [4]p.13, [5]p.50
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wait_us(100); // 100us [4]p.13, [5]p.50
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/* 'Request to Send' and Start bit */
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data_lo();
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@ -86,7 +112,6 @@ uint8_t ps2_host_send(uint8_t data) {
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/* Data bit[2-9] */
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for (uint8_t i = 0; i < 8; i++) {
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_delay_us(15);
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if (data & (1 << i)) {
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parity = !parity;
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data_hi();
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@ -98,7 +123,7 @@ uint8_t ps2_host_send(uint8_t data) {
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}
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/* Parity bit */
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_delay_us(15);
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wait_us(15);
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if (parity) {
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data_hi();
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} else {
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@ -108,7 +133,7 @@ uint8_t ps2_host_send(uint8_t data) {
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WAIT(clock_lo, 50, 5);
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/* Stop bit */
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_delay_us(15);
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wait_us(15);
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data_hi();
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/* Ack */
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@ -132,7 +157,7 @@ uint8_t ps2_host_recv_response(void) {
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// Command may take 25ms/20ms at most([5]p.46, [3]p.21)
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uint8_t retry = 25;
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while (retry-- && !pbuf_has_data()) {
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_delay_ms(1);
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wait_ms(1);
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}
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return pbuf_dequeue();
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}
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@ -148,7 +173,7 @@ uint8_t ps2_host_recv(void) {
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}
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}
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ISR(PS2_INT_VECT) {
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void ps2_interrupt_service_routine(void) {
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static enum {
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INIT,
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START,
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@ -218,6 +243,10 @@ RETURN:
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return;
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}
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#if defined(__AVR__)
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ISR(PS2_INT_VECT) { ps2_interrupt_service_routine(); }
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#endif
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/* send LED state to keyboard */
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void ps2_host_set_led(uint8_t led) {
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ps2_host_send(0xED);
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@ -232,8 +261,13 @@ static uint8_t pbuf[PBUF_SIZE];
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static uint8_t pbuf_head = 0;
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static uint8_t pbuf_tail = 0;
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static inline void pbuf_enqueue(uint8_t data) {
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#if defined(__AVR__)
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uint8_t sreg = SREG;
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cli();
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#elif defined(PROTOCOL_CHIBIOS)
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chSysLockFromISR();
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#endif
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uint8_t next = (pbuf_head + 1) % PBUF_SIZE;
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if (next != pbuf_tail) {
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pbuf[pbuf_head] = data;
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@ -241,31 +275,66 @@ static inline void pbuf_enqueue(uint8_t data) {
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} else {
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print("pbuf: full\n");
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}
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#if defined(__AVR__)
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SREG = sreg;
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#elif defined(PROTOCOL_CHIBIOS)
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chSysUnlockFromISR();
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#endif
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}
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static inline uint8_t pbuf_dequeue(void) {
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uint8_t val = 0;
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#if defined(__AVR__)
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uint8_t sreg = SREG;
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cli();
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#elif defined(PROTOCOL_CHIBIOS)
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chSysLock();
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#endif
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if (pbuf_head != pbuf_tail) {
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val = pbuf[pbuf_tail];
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pbuf_tail = (pbuf_tail + 1) % PBUF_SIZE;
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}
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#if defined(__AVR__)
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SREG = sreg;
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#elif defined(PROTOCOL_CHIBIOS)
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chSysUnlock();
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#endif
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return val;
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}
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static inline bool pbuf_has_data(void) {
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#if defined(__AVR__)
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uint8_t sreg = SREG;
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cli();
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#elif defined(PROTOCOL_CHIBIOS)
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chSysLock();
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#endif
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bool has_data = (pbuf_head != pbuf_tail);
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#if defined(__AVR__)
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SREG = sreg;
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#elif defined(PROTOCOL_CHIBIOS)
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chSysUnlock();
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#endif
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return has_data;
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}
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static inline void pbuf_clear(void) {
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#if defined(__AVR__)
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uint8_t sreg = SREG;
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cli();
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#elif defined(PROTOCOL_CHIBIOS)
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chSysLock();
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#endif
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pbuf_head = pbuf_tail = 0;
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#if defined(__AVR__)
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SREG = sreg;
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#elif defined(PROTOCOL_CHIBIOS)
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chSysUnlock();
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#endif
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}
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@ -0,0 +1,55 @@
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#include <stdbool.h>
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#include "ps2_io.h"
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// chibiOS headers
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#include "ch.h"
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#include "hal.h"
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/* Check port settings for clock and data line */
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#if !(defined(PS2_CLOCK))
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# error "PS/2 clock setting is required in config.h"
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#endif
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#if !(defined(PS2_DATA))
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# error "PS/2 data setting is required in config.h"
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#endif
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/*
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* Clock
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*/
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void clock_init(void) {}
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void clock_lo(void) {
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palSetLineMode(PS2_CLOCK, PAL_MODE_OUTPUT_OPENDRAIN);
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palWriteLine(PS2_CLOCK, PAL_LOW);
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}
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void clock_hi(void) {
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palSetLineMode(PS2_CLOCK, PAL_MODE_OUTPUT_OPENDRAIN);
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palWriteLine(PS2_CLOCK, PAL_HIGH);
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}
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bool clock_in(void) {
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palSetLineMode(PS2_CLOCK, PAL_MODE_INPUT);
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return palReadLine(PS2_CLOCK);
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}
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/*
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* Data
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*/
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void data_init(void) {}
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void data_lo(void) {
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palSetLineMode(PS2_DATA, PAL_MODE_OUTPUT_OPENDRAIN);
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palWriteLine(PS2_DATA, PAL_LOW);
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}
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void data_hi(void) {
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palSetLineMode(PS2_DATA, PAL_MODE_OUTPUT_OPENDRAIN);
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palWriteLine(PS2_DATA, PAL_HIGH);
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}
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bool data_in(void) {
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palSetLineMode(PS2_DATA, PAL_MODE_INPUT);
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return palReadLine(PS2_DATA);
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}
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@ -16,9 +16,13 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdbool.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#if defined(__AVR__)
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# include <avr/io.h>
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#endif
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#include "ps2_mouse.h"
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#include "wait.h"
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#include "host.h"
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#include "timer.h"
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#include "print.h"
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@ -42,7 +46,7 @@ static inline void ps2_mouse_scroll_button_task(report_mouse_t *mouse_report);
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void ps2_mouse_init(void) {
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ps2_host_init();
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_delay_ms(PS2_MOUSE_INIT_DELAY); // wait for powering up
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wait_ms(PS2_MOUSE_INIT_DELAY); // wait for powering up
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PS2_MOUSE_SEND(PS2_MOUSE_RESET, "ps2_mouse_init: sending reset");
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@ -210,7 +214,7 @@ static inline void ps2_mouse_enable_scrolling(void) {
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PS2_MOUSE_SEND(PS2_MOUSE_SET_SAMPLE_RATE, "Set sample rate");
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PS2_MOUSE_SEND(80, "80");
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PS2_MOUSE_SEND(PS2_MOUSE_GET_DEVICE_ID, "Finished enabling scroll wheel");
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_delay_ms(20);
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wait_ms(20);
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}
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#define PRESS_SCROLL_BUTTONS mouse_report->buttons |= (PS2_MOUSE_SCROLL_BTN_MASK)
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@ -252,7 +256,7 @@ static inline void ps2_mouse_scroll_button_task(report_mouse_t *mouse_report) {
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if (scroll_state == SCROLL_BTN && timer_elapsed(scroll_button_time) < PS2_MOUSE_SCROLL_BTN_SEND) {
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PRESS_SCROLL_BUTTONS;
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host_mouse_send(mouse_report);
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_delay_ms(100);
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wait_ms(100);
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RELEASE_SCROLL_BUTTONS;
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}
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#endif
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Reference in New Issue