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https://github.com/Architeuthis-Flux/Jumperless.git
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Add custom class driver, instead of using HID
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@ -70,9 +70,13 @@ extern "C" {
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#define CFG_TUD_CDC 2
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#define CFG_TUD_MSC 0
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#define CFG_TUD_HID 1
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#define CFG_TUD_HID 0
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#define CFG_TUD_MIDI 0
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#define CFG_TUD_VENDOR 0
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#define CFG_TUD_JUMPERLESS 1
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// max is 64
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#define CFG_TUD_JUMPERLESS_EP_BUFSIZE 8
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// CDC FIFO size of TX and RX
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#define CFG_TUD_CDC_RX_BUFSIZE 256
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@ -0,0 +1,76 @@
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#include "tusb_option.h"
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#if CFG_TUD_JUMPERLESS
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#if CFG_TUD_JUMPERLESS > 1
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#error "Only one jumperless interface can be used"
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#endif
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#include "device/usbd.h"
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#include "device/usbd_pvt.h"
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#include "jumperless_device.h"
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typedef struct {
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uint8_t itf_num;
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uint8_t ep_in;
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uint8_t ep_out;
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CFG_TUSB_MEM_ALIGN uint8_t epin_buf[CFG_TUD_JUMPERLESS_EP_BUFSIZE];
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} jl_interface_t;
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CFG_TUSB_MEM_SECTION tu_static jl_interface_t _jl_itf[CFG_TUD_JUMPERLESS];
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bool tud_jumperless_ready() {
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uint8_t const rhport = 0;
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uint8_t const ep_in = _jl_itf[0].ep_in;
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return tud_ready() && (ep_in != 0) && !usbd_edpt_busy(rhport, ep_in);
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}
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bool tud_jumperless_send_measurements(void const *data, uint16_t len) {
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uint8_t const rhport = 0;
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jl_interface_t *iface = &_jl_itf[0];
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TU_VERIFY(usbd_edpt_claim(rhport, iface->ep_in));
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TU_VERIFY(0 == tu_memcpy_s(iface->epin_buf, CFG_TUD_JUMPERLESS_EP_BUFSIZE, data, len));
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return usbd_edpt_xfer(rhport, iface->ep_in, iface->epin_buf, len);
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}
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void tud_jumperless_init(void) {
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tud_jumperless_reset(0);
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}
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void tud_jumperless_reset(uint8_t rhport) {
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}
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uint16_t tud_jumperless_open(uint8_t rhport,
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tusb_desc_interface_t const *desc_itf,
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uint16_t max_len) {
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TU_VERIFY(0xFF == desc_itf->bInterfaceClass, 0);
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uint16_t const drv_len = (uint16_t) sizeof(tusb_desc_interface_t) + 2 * sizeof(tusb_desc_endpoint_t);
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TU_ASSERT(max_len >= drv_len, 0);
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jl_interface_t *iface = &_jl_itf[0];
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uint8_t const *p_desc = (uint8_t const*) desc_itf;
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p_desc = tu_desc_next(p_desc);
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TU_ASSERT(usbd_open_edpt_pair(rhport, p_desc, 2, TUSB_XFER_INTERRUPT, &iface->ep_out, &iface->ep_in), 0);
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iface->itf_num = desc_itf->bInterfaceNumber;
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return drv_len;
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}
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bool tud_jumperless_control_xfer_cb(uint8_t rhport, uint8_t stage,
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tusb_control_request_t const *request) {
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return false;
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}
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bool tud_jumperless_xfer_cb(uint8_t rhport, uint8_t ep_addr,
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xfer_result_t event, uint32_t xferred_bytes) {
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return false;
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}
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#endif
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@ -0,0 +1,26 @@
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#ifndef _TUSB_JUMPERLESS_DEVICE_H_
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#define _TUSB_JUMPERLESS_DEVICE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Application API
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bool tud_jumperless_ready();
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bool tud_jumperless_send_measurements(void const* data, uint16_t len);
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//--------------------------------------------------------------------+
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// Internal Class Driver API
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//--------------------------------------------------------------------+
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void tud_jumperless_init (void);
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void tud_jumperless_reset (uint8_t rhport);
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uint16_t tud_jumperless_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len);
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bool tud_jumperless_control_xfer_cb (uint8_t rhport, uint8_t stage, tusb_control_request_t const * request);
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bool tud_jumperless_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
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#ifdef __cplusplus
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}
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#endif
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#endif
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@ -233,6 +233,18 @@ tu_static usbd_class_driver_t const _usbd_driver[] =
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.sof = NULL
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},
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#endif
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#if CFG_TUD_JUMPERLESS
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{
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DRIVER_NAME("JUMPERLESS")
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.init = tud_jumperless_init,
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.reset = tud_jumperless_reset,
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.open = tud_jumperless_open,
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.control_xfer_cb = tud_jumperless_control_xfer_cb,
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.xfer_cb = tud_jumperless_xfer_cb,
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.sof = NULL
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},
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#endif
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};
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enum { BUILTIN_DRIVER_COUNT = TU_ARRAY_SIZE(_usbd_driver) };
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@ -113,6 +113,10 @@
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#if CFG_TUD_BTH
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#include "class/bth/bth_device.h"
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#endif
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#if CFG_TUD_JUMPERLESS
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#include "class/jumperless/jumperless_device.h"
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#endif
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#endif
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@ -1,69 +0,0 @@
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// SPDX-License-Identifier: MIT
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#ifdef USE_TINYUSB
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#include <Adafruit_TinyUSB.h>
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#endif
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#ifdef CFG_TUSB_CONFIG_FILE
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#include CFG_TUSB_CONFIG_FILE
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#else
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#include "tusb_config.h"
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#endif
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#include <ADCInput.h>
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// Other parts of the code can just read from here instead of using `analogRead`
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volatile uint16_t adcReadings[4] = { 0, 0, 0, 0 };
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Adafruit_USBD_HID USBHID;
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uint8_t desc_hid_report[] = {
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TUD_HID_REPORT_DESC_GENERIC_INOUT(sizeof(adcReadings))
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};
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// samples all four pins, round-robin
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ADCInput adc(A0, A1, A2, A3);
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static uint16_t getReportCallback(uint8_t report_id, hid_report_type_t report_type,
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uint8_t *buffer, uint16_t reqlen) {
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// ignore this.
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return 0;
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}
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static void setReportCallback(uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize)
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{
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// ignore this as well.
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}
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// called when the ADC buffer has data
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static void adcCallback() {
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if (adc.available() < 4) {
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return;
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}
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// need a separate buffer here, since `sendReport` can't accept a volatile buffer.
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uint16_t buf[4];
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buf[0] = adcReadings[0] = adc.read();
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buf[1] = adcReadings[1] = adc.read();
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buf[2] = adcReadings[2] = adc.read();
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buf[3] = adcReadings[3] = adc.read();
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// only send readings if HID is "ready". Otherwise `sendReport` just hangs.
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if (tud_hid_n_ready(0)) {
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USBHID.sendReport(0, buf, sizeof(buf));
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}
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}
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void setupAdcHidStuff() {
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USBHID.setPollInterval(1);
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USBHID.setReportDescriptor(desc_hid_report, sizeof(desc_hid_report));
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USBHID.setStringDescriptor("Jumperless USB Analog");
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USBHID.setReportCallback(getReportCallback, setReportCallback);
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USBHID.begin();
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adc.setBuffers(4, 32);
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adc.onReceive(adcCallback);
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// the sample rate passed here is already adjusted for the number of pins.
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// in other words: passing 1000 actually samples at a rate of 4000, such that
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// values for all 4 pins are available every millisecond.
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adc.begin(1000);
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}
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86
JumperlessNano/src/AdcUsb.cpp
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86
JumperlessNano/src/AdcUsb.cpp
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@ -0,0 +1,86 @@
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// SPDX-License-Identifier: MIT
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#ifdef USE_TINYUSB
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#include <Adafruit_TinyUSB.h>
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#endif
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#ifdef CFG_TUSB_CONFIG_FILE
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#include CFG_TUSB_CONFIG_FILE
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#else
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#include "tusb_config.h"
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#endif
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#include <ADCInput.h>
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// Other parts of the code can just read from here instead of using `analogRead`
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volatile uint16_t adcReadings[4] = { 0, 0, 0, 0 };
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// samples all four pins, round-robin
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ADCInput adc(A0, A1, A2, A3);
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// called when the ADC buffer has data
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static void adcCallback() {
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if (adc.available() < 4) {
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return;
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}
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// need a separate buffer here, since `sendReport` can't accept a volatile buffer.
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uint16_t buf[4];
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buf[0] = adcReadings[0] = adc.read();
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buf[1] = adcReadings[1] = adc.read();
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buf[2] = adcReadings[2] = adc.read();
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buf[3] = adcReadings[3] = adc.read();
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if (tud_jumperless_ready()) {
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tud_jumperless_send_measurements(buf, sizeof(buf));
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}
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}
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// This class is needed to feed the custom interface descriptor to the Adafruit USB library.
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// The actual functionality for allocating endpoints, handling transfers etc. is implemented
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// within `class/jumperless/jumperless_device.c` in the tinyusb tree.
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class JumperlessUsbInterface : public Adafruit_USBD_Interface {
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public:
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JumperlessUsbInterface();
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virtual uint16_t getInterfaceDescriptor(uint8_t itfnum, uint8_t *buf,
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uint16_t bufsize);
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};
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JumperlessUsbInterface::JumperlessUsbInterface() {
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this->setStringDescriptor("Jumperless Analog");
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}
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uint16_t JumperlessUsbInterface::getInterfaceDescriptor(uint8_t itfnum,
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uint8_t *buf,
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uint16_t bufsize) {
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uint16_t epsize = CFG_TUD_JUMPERLESS_EP_BUFSIZE;
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uint8_t ep_interval = 1;
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uint8_t desc[] = {
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9, TUSB_DESC_INTERFACE, itfnum, 0, 2, TUSB_CLASS_VENDOR_SPECIFIC, 0x00, 0x00, 0,
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7, TUSB_DESC_ENDPOINT, 0x80, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(epsize), ep_interval,
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7, TUSB_DESC_ENDPOINT, 0x00, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(epsize), ep_interval
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};
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uint16_t const len = sizeof(desc);
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if (bufsize < len) {
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return 0;
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}
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if (buf != NULL) {
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memcpy(buf, desc, len);
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}
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return len;
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}
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JumperlessUsbInterface jlUsbInterface;
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void setupAdcUsbStuff() {
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TinyUSBDevice.addInterface(jlUsbInterface);
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adc.setBuffers(4, 32);
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adc.onReceive(adcCallback);
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// the sample rate passed here is already adjusted for the number of pins.
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// in other words: passing 1000 actually samples at a rate of 4000, such that
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// values for all 4 pins are available every millisecond.
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adc.begin(1000);
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}
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@ -1,11 +1,11 @@
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// SPDX-License-Identifier: MIT
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#ifndef JUMPERLESS_HID_H
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#define JUMPERLESS_HID_H
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#ifndef JUMPERLESS_ADC_USB_H
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#define JUMPERLESS_ADC_USB_H
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// if `setupAdcHidStuff` was called, this always contains somewhat up-to-date ADC readings
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extern uint16_t adcReadings[4];
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void setupAdcHidStuff();
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void setupAdcUsbStuff();
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#endif
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#endif
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#include "AdcHid.h"
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#include "AdcUsb.h"
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Adafruit_USBD_CDC USBSer1;
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@ -79,7 +79,7 @@ void setup()
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USBSer1.begin(115200);
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setupAdcHidStuff();
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setupAdcUsbStuff();
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#ifdef EEPROMSTUFF
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EEPROM.begin(256);
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