CrazyRedMachine
4ea1397af2
add aciodrv-proc module explanation : PANB works differently from other acio devices ; you send one "start auto input" command without expecting a reply, and then the piano keeps spamming "recv poll" commands on the acio bus and never replies to any other commands.. failure to process these messages quickly enough will saturate the serial buffer and cause checksum errors after a while. for this reason, aciodrv-proc module was added in order to create a thread which manages these recv poll commands and keeps the latest known button state in memory so that it can be retrieved easily.
76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
#include "aciotest/panb.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include "aciodrv/panb.h"
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#include "aciodrv-proc/panb.h"
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struct panb_handler_ctx {
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bool running;
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};
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bool aciotest_panb_handler_init(struct aciodrv_device_ctx *device, uint8_t node_id, void **ctx)
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{
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if (node_id != 0) {
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return true;
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}
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*ctx = malloc(sizeof(struct panb_handler_ctx));
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struct panb_handler_ctx *panb_ctx = (struct panb_handler_ctx*)*ctx;
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panb_ctx->running = true;
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return aciodrv_proc_panb_init(device);
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}
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bool aciotest_panb_handler_update(struct aciodrv_device_ctx *device, uint8_t node_id, void *ctx)
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{
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uint8_t button[AC_IO_PANB_MAX_KEYS];
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struct ac_io_panb_poll_out state;
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struct panb_handler_ctx *panb_ctx = (struct panb_handler_ctx *) ctx;
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if (node_id != 0) {
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return true;
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}
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if (!panb_ctx->running) {
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printf(">>> PANB:\nDevice has been closed. Press Ctrl+C to exit.");
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return true;
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}
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if (!aciodrv_proc_panb_get_state(button)) {
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return false;
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}
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printf(">>> PANB:\nPress first and last keys to close device\n");
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for (int i=0; i<AC_IO_PANB_MAX_KEYS; i++) {
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printf("%01X ", button[i]);
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}
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printf("\n");
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/* I added a key combo to properly close the module.
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* Leaving the PANB device in autopolling state without ever
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* reading packets from the serial interface eventually
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* makes it fall into a state where it doesn't send anything anymore
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* and won't even respond to a reset, thus requiring a power cycle.
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*/
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if (button[0] && button[AC_IO_PANB_MAX_KEYS-1]) {
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aciodrv_proc_panb_fini(device);
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panb_ctx->running = false;
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return true;
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}
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/* light the panel */
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for (int i=0; i<AC_IO_PANB_MAX_KEYS; i++) {
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state.key[i].green = (button[i])? 0x7F : 0;
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state.key[i].red = 0;
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state.key[i].blue = (button[i])? 0x23 : 0;
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}
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if (!aciodrv_panb_send_lamp(device, node_id, &state)) {
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return false;
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}
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return true;
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} |