Control Surface main
MIDI Control Surface library for Arduino
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MAX7219.hpp
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1/* ✔ */
2
3#pragma once
4
8
10
29template <uint8_t NumChips = 1, class SPIDriver = decltype(SPI) &>
30class MAX7219 : public MAX7219_Base<SPIDriver>,
31 public StaticSizeExtendedIOElement<8 * 8 * NumChips> {
32 public:
41 MAX7219(SPIDriver spi, pin_t loadPin)
42 : MAX7219_Base<SPIDriver>(std::forward<SPIDriver>(spi), loadPin,
43 NumChips) {}
44
48
49 private:
57
59 uint8_t row = pin.pin / 8;
60 uint8_t col = pin.pin % 8;
61 uint8_t rowgrp = row % 8;
62 uint8_t rowmask = 1 << rowgrp;
63 uint8_t colmask = 1 << col;
64 return {row, col, rowgrp, rowmask, colmask};
65 }
66
67 public:
72 void pinMode(pin_int_t pin, PinMode_t mode) override
73 __attribute__((deprecated)) {
74 (void)pin;
75 (void)mode;
76 }
77
81 void pinModeBuffered(pin_int_t pin, PinMode_t mode) override
82 __attribute__((deprecated)) {
83 (void)pin;
84 (void)mode;
85 }
86
96 void digitalWrite(pin_int_t pin, PinStatus_t val) override {
97 IndexMask i = pin2index(pin);
98 val ? buffer[i.row] |= i.colmask // set the pin (high)
99 : buffer[i.row] &= ~i.colmask; // clear the pin (low)
100 updateBufferedOutputRow(i);
101 }
102
110 IndexMask i = pin2index(pin);
111 val ? buffer[i.row] |= i.colmask // set the pin (high)
112 : buffer[i.row] &= ~i.colmask; // clear the pin (low)
113 dirty_rows |= i.rowmask;
114 }
115
127 IndexMask i = pin2index(pin);
128 return bool(buffer[i.row] & i.colmask) ? HIGH : LOW;
129 }
130
135 IndexMask i = pin2index(pin);
136 return bool(buffer[i.row] & i.colmask) ? HIGH : LOW;
137 }
138
149 analog_t analogRead(pin_int_t pin) override __attribute__((deprecated)) {
150 return 1023 * digitalRead(pin);
151 }
152
157 __attribute__((deprecated)) {
158 return 1023 * digitalRead(pin);
159 }
160
174 void analogWrite(pin_int_t pin, analog_t val) override
175 __attribute__((deprecated)) {
176 digitalWrite(pin, val >= 0x80 ? HIGH : LOW);
177 }
178
183 __attribute__((deprecated)) {
184 digitalWrite(pin, val >= 0x80 ? HIGH : LOW);
185 }
186
188 this->sendRowAll(i.rowgrp, buffer.data + i.rowgrp, 8);
189 dirty_rows &= ~i.rowmask;
190 }
191
192 void updateBufferedOutputs() override {
193 if (dirty_rows == 0)
194 return;
195 uint8_t row = 8;
196 do {
197 --row;
198 if (dirty_rows & 0x80)
199 this->sendRowAll(row, buffer.data + row, 8);
200 dirty_rows <<= 1;
201 } while (row);
202 }
203
204 void updateBufferedInputs() override {}
205
206 private:
208 uint8_t dirty_rows = 0xFF;
209};
210
#define END_AH_NAMESPACE
#define BEGIN_AH_NAMESPACE
constexpr PinStatus_t LOW
AH::function_traits< decltype(::digitalWrite)>::argument_t< 1 > PinStatus_t
constexpr PinStatus_t HIGH
AH::function_traits< decltype(::pinMode)>::argument_t< 1 > PinMode_t
A base class for classes that control MAX7219 LED drivers.
A class for LED outputs using the MAX7219 LED display driver.
Definition MAX7219.hpp:31
void updateBufferedOutputRow(IndexMask i)
Definition MAX7219.hpp:187
void updateBufferedOutputs() override
Write the internal state to the physical outputs.
Definition MAX7219.hpp:192
void pinMode(pin_int_t pin, PinMode_t mode) override __attribute__((deprecated))
The pinMode function is not implemented because the mode is OUTPUT by definition.
Definition MAX7219.hpp:72
PinStatus_t digitalRead(pin_int_t pin) override
Get the current state of a given output.
Definition MAX7219.hpp:126
void digitalWrite(pin_int_t pin, PinStatus_t val) override
Set the state of a given output pin.
Definition MAX7219.hpp:96
void analogWriteBuffered(pin_int_t pin, analog_t val) override __attribute__((deprecated))
The analogWrite function is deprecated because a MAX7219 is always digital.
Definition MAX7219.hpp:182
PinStatus_t digitalReadBuffered(pin_int_t pin) override
Get the current state of a given output.
Definition MAX7219.hpp:134
void pinModeBuffered(pin_int_t pin, PinMode_t mode) override __attribute__((deprecated))
The pinMode function is not implemented because the mode is OUTPUT by definition.
Definition MAX7219.hpp:81
void updateBufferedInputs() override
Read the physical state into the input buffers.
Definition MAX7219.hpp:204
MAX7219(SPIDriver spi, pin_t loadPin)
Create a MAX7219 ExtendedIOElement.
Definition MAX7219.hpp:41
analog_t analogReadBuffered(pin_int_t pin) override __attribute__((deprecated))
The analogRead function is deprecated because a MAX7219 is always digital.
Definition MAX7219.hpp:156
void begin() override
Initialize.
Definition MAX7219.hpp:47
static IndexMask pin2index(pin_t pin)
Definition MAX7219.hpp:58
void digitalWriteBuffered(pin_int_t pin, PinStatus_t val) override
Set the state of a given pin in the software buffer.
Definition MAX7219.hpp:109
Array< uint8_t, 8 *NumChips > buffer
Definition MAX7219.hpp:207
void analogWrite(pin_int_t pin, analog_t val) override __attribute__((deprecated))
The analogWrite function is deprecated because a MAX7219 is always digital.
Definition MAX7219.hpp:174
analog_t analogRead(pin_int_t pin) override __attribute__((deprecated))
The analogRead function is deprecated because a MAX7219 is always digital.
Definition MAX7219.hpp:149
A class for serial-in/parallel-out shift registers, like the 74HC595 that are connected to the SPI bu...
A class for ExtendedIOElements with a fixed size.
uint16_t analog_t
The type returned from analogRead and similar functions.
uint_fast16_t pin_int_t
Integer type used internally to store the index of (extended) GPIO pins.
Type for storing pin numbers of Extended Input/Output elements.
pin_int_t pin
The actual underlying pin number.