Shadowtrance
dbf850c434
- M5 Unit Modules library + M5 Unit Test app - Minor fixes for TodoList, TwoEleven, Snake, Brainfuck and Breakout - Fixed SerialConsole to use the uart controller as it was broken in one of the many updates - Fixed keyboard input in TwoEleven, Breakout, Magic8Ball and Snake - Bluetooth Media Keys app, supports pressing physical keys to trigger the corresponding buttonmatrix button - Epub Reader app
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
#include <UnitMidi.h>
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#include <tactility/drivers/uart_controller.h>
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#include <esp_log.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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static constexpr auto* TAG = "UnitMidi";
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static constexpr uint32_t BAUD = 31250;
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static constexpr uint32_t SEND_TIMEOUT_MS = 20;
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bool UnitMidi::begin(Device* dev) {
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if (!dev) return false;
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UartConfig cfg = {
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BAUD,
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UART_CONTROLLER_DATA_8_BITS,
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UART_CONTROLLER_PARITY_DISABLE,
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UART_CONTROLLER_STOP_BITS_1,
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};
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if (uart_controller_set_config(dev, &cfg) != ERROR_NONE) {
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ESP_LOGW(TAG, "uart_controller_set_config failed");
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return false;
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}
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if (uart_controller_open(dev) != ERROR_NONE) {
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ESP_LOGW(TAG, "uart_controller_open failed");
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return false;
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}
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dev_ = dev;
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ready_ = true;
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// Give SAM2695 time to power up, then reset to known state
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vTaskDelay(pdMS_TO_TICKS(100));
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reset();
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ESP_LOGI(TAG, "UnitMidi ready at %" PRIu32 " bps", BAUD);
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return true;
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}
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void UnitMidi::end() {
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if (dev_ && ready_) {
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allNotesOff(0xFF);
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uart_controller_close(dev_);
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}
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ready_ = false;
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dev_ = nullptr;
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}
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void UnitMidi::send(const uint8_t* data, size_t len) {
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if (!ready_ || !dev_) return;
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uart_controller_write_bytes(dev_, data, len, pdMS_TO_TICKS(SEND_TIMEOUT_MS));
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}
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void UnitMidi::reset() {
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uint8_t msg[] = { 0xFF };
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send(msg, 1);
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}
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void UnitMidi::noteOn(uint8_t channel, uint8_t note, uint8_t velocity) {
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uint8_t msg[] = { (uint8_t)(0x90 | (channel & 0x0F)), (uint8_t)(note & 0x7F), (uint8_t)(velocity & 0x7F) };
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send(msg, 3);
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}
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void UnitMidi::noteOff(uint8_t channel, uint8_t note) {
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uint8_t msg[] = { (uint8_t)(0x80 | (channel & 0x0F)), (uint8_t)(note & 0x7F), 0x00 };
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send(msg, 3);
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}
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void UnitMidi::programChange(uint8_t channel, uint8_t program) {
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uint8_t msg[] = { (uint8_t)(0xC0 | (channel & 0x0F)), (uint8_t)(program & 0x7F) };
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send(msg, 2);
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}
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void UnitMidi::controlChange(uint8_t channel, uint8_t controller, uint8_t value) {
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uint8_t msg[] = { (uint8_t)(0xB0 | (channel & 0x0F)), (uint8_t)(controller & 0x7F), (uint8_t)(value & 0x7F) };
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send(msg, 3);
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}
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void UnitMidi::pitchBend(uint8_t channel, int16_t value) {
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// value range -8192..+8191 → offset by 8192, split into 7-bit LSB/MSB
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uint16_t v = (uint16_t)(value + 8192);
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uint8_t msg[] = {
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(uint8_t)(0xE0 | (channel & 0x0F)),
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(uint8_t)(v & 0x7F),
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(uint8_t)((v >> 7) & 0x7F),
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};
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send(msg, 3);
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}
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void UnitMidi::allNotesOff(uint8_t channel) {
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if (channel == 0xFF) {
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for (uint8_t ch = 0; ch < 16; ch++)
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controlChange(ch, 123, 0);
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} else {
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controlChange(channel, 123, 0);
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}
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}
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