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ex02 ok

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hugogogo
2025-03-04 16:26:45 +01:00
parent 1a86e78984
commit bec3898aa8
2 changed files with 88 additions and 8 deletions
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3
.vscode/settings.json vendored
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@@ -1,5 +1,6 @@
{
"files.associations": {
"io.h": "c"
"io.h": "c",
"delay.h": "c"
}
}

93
module00/ex02/main.c
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@@ -1,23 +1,102 @@
#include <avr/io.h>
#include <util/delay.h>
// test with https://www.onlinegdb.com/online_c_compiler
// // V1
//
// // macro to extract port and bit from a single pin
// #define _PORT(pin) ((pin) >> 3)
// #define _BIT(pin) ((pin) & 0x07) // 0x07 is 00000111
//
// // helper macros for port name concatenation
// #define _CONCAT(a, b) a ## b
// #define PORT_REGISTER(pin) _CONCAT(PORT, _PORT(pin))
// #define DDR_REGISTER(pin) _CONCAT(DDR, _PORT(pin))
// #define PIN_REGISTER(pin) _CONCAT(PIN, _PORT(pin))
//
// // Macros to set/clear/toggle specific bit
// #define SET(REGISTER, PIN) REGISTER |= 1 << _BIT(PIN)
// #define CLEAR(REGISTER, PIN) REGISTER &= ~(1 << _BIT(PIN))
// #define TOGGLE(REGISTER, PIN) REGISTER ^= 1 << _BIT(PIN)
// #define MODE_OUTPUT(PIN) (DDR_REGISTER(PIN) |= 1 << _BIT(PIN))
// #define MODE_INPUT(PIN) (DDR_REGISTER(PIN) &= ~(1 << _BIT(PIN)))
//
// // Test and check macros
// #define TEST_PIN(PIN) (PIN_REGISTER(PIN) & (1 << _BIT(PIN)))
// #define IS_SET(PIN) (TEST(PIN) != 0)
// #define IS_CLEAR(PIN) (TEST(PIN) == 0)
//
// // Pin definitions
// #define D1 (0 + (1 << 3)) // Port B, bit 0
// #define D2 (1 + (1 << 3)) // Port B, bit 1
// #define D3 (2 + (1 << 3)) // Port B, bit 2
// #define D4 (4 + (1 << 3)) // Port B, bit 4
// #define SW1 (2 + (3 << 3)) // Port D, bit 2
// #define SW2 (4 + (3 << 3)) // Port D, bit 4
// // V2
//
// // Define the ports
// #define PORT_B 0 // Port A (represented by 0)
// #define PORT_C 1 // Port B (represented by 1)
// #define PORT_D 2 // Port C (represented by 2)
//
// // Macros to extract the port and bit
// #define _PORT_INT(pin) ((pin) >> 3) // Extract the port
// #define _PORT(pin) \
// ((_PORT_INT(pin)) == PORT_B ? 'B' : \
// ((_PORT_INT(pin)) == PORT_C ? 'C' : \
// ((_PORT_INT(pin)) == PORT_D ? 'D' : \
// 'X')))
// #define _BIT(pin) ((pin) & 0x07) // Extract the bit
//
// // Macros to set/clear/toggle specific bit
// #define SET(REGISTER, PIN) REGISTER |= 1 << _BIT(PIN)
// #define CLEAR(REGISTER, PIN) REGISTER &= ~(1 << _BIT(PIN))
// #define TOGGLE(REGISTER, PIN) REGISTER ^= 1 << _BIT(PIN)
// #define MODE_OUTPUT(PIN) (_PORT(PIN) |= 1 << _BIT(PIN))
// #define MODE_INPUT(PIN) (_PORT(PIN) &= ~(1 << _BIT(PIN)))
//
// // Test and check macros
// #define TEST(PIN) (PIN_REGISTER(PIN) & (1 << _BIT(PIN)))
// #define IS_SET(PIN) (TEST(PIN) != 0)
// #define IS_CLEAR(PIN) (TEST(PIN) == 0)
//
// // Define each LED's port and bit using macros
// #define D1 (PORT_B << 3 | 0) // LED1 is on Port B, bit 0
// #define D2 (PORT_B << 3 | 1) // LED2 is on Port A, bit 1
// #define D3 (PORT_B << 3 | 2) // LED3 is on Port C, bit 2
// #define D4 (PORT_B << 3 | 4) // LED4 is on Port C, bit 4
// V0
#define SET(REGISTER, BIT) REGISTER |= 1 << BIT
#define CLEAR(REGISTER, BIT) REGISTER &= ~(1 << BIT)
#define TEST(REGISTER, BIT) REGISTER & 1 << BIT
#define TEST_PIN(PORT, BIT) PIN ## PORT & 1 << BIT
#define TOGGLE(REGISTER, BIT) REGISTER ^= 1 << BIT
#define MODE_INPUT(BIT) CLEAR(DDRB, BIT)
#define MODE_OUTPUT(BIT) SET(DDRB, BIT)
#define MODE_INPUT(PORT, BIT) CLEAR(DDR ## PORT, BIT)
#define MODE_OUTPUT(PORT, BIT) SET(DDR ## PORT, BIT)
#define IS_PIN_SET(PORT, BIT) (TEST_PIN(PORT, BIT)) == 0
#define IS_PIN_CLEAR(PORT, BIT) (TEST_PIN(PORT, BIT)) == 1
#define D1 0
#define D2 1
#define D3 2
#define D4 4
#define SW1 2
#define SW2 4
int main()
{
MODE_OUTPUT(D1);
SET(PORTB, D1);
return 0;
while(1) {
MODE_OUTPUT(B, D1);
MODE_INPUT(D, SW1);
if (IS_PIN_SET(D, SW1)) {
SET(PORTB, D1);
} else {
CLEAR(PORTB, D1);
}
}
return 0;
}