Mikrokontrollersystemer-gruppe-4/mikrokontrollersystemer-prosjekt
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Rename receive buffer for better clarity & add comment

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This commit is contained in:
Sebastian H. Gabrielli 2024-04-28 20:14:27 +02:00
parent ba54ff20ef
commit 6acdb2beb6
2 changed files with 10 additions and 7 deletions
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12
prosjekt.X/i2c.c
View File

@ -8,7 +8,9 @@
// read request // read request
volatile bool last_action_write = false; volatile bool last_action_write = false;
volatile uint8_t i2c_recv[I2C_RECV_BUF_SIZE] = {0}; // Buffer to hold the received data
volatile uint8_t i2c_recv_buf[I2C_RECV_BUF_SIZE] = {0};
// Counter to know which datapoint we're on
volatile uint8_t i2c_recv_len = 0; volatile uint8_t i2c_recv_len = 0;
void init_i2c(void) { void init_i2c(void) {
@ -45,7 +47,7 @@ void init_i2c(void) {
void i2c_reset_recv() { void i2c_reset_recv() {
i2c_recv_len = 0; i2c_recv_len = 0;
for (int i = 0; i < I2C_RECV_BUF_SIZE; i++) { for (int i = 0; i < I2C_RECV_BUF_SIZE; i++) {
i2c_recv[i] = 0; i2c_recv_buf[i] = 0;
} }
} }
@ -56,7 +58,7 @@ void i2c_write_handler(uint8_t data) {
if (i2c_recv_len >= I2C_RECV_BUF_SIZE) { return; } if (i2c_recv_len >= I2C_RECV_BUF_SIZE) { return; }
// Write the data to the receive buffer // Write the data to the receive buffer
i2c_recv[i2c_recv_len] = data; i2c_recv_buf[i2c_recv_len] = data;
i2c_recv_len++; i2c_recv_len++;
} }
@ -69,10 +71,10 @@ void i2c_read_handler() {
void i2c_stop_handler() { void i2c_stop_handler() {
if (last_action_write) { if (last_action_write) {
// Parse the received command data // Parse the received command data
parse_command(i2c_recv, i2c_recv_len); parse_command(i2c_recv_buf, i2c_recv_len);
// If the received command is a write only command we want to route it now. // If the received command is a write only command we want to route it now.
if (i2c_recv[0] == CLEAR_BULK_FAN_SPEED || i2c_recv[0] == WRITE_CONFIG) { if (i2c_recv_buf[0] == CLEAR_BULK_FAN_SPEED || i2c_recv_buf[0] == WRITE_CONFIG) {
route_command(0); route_command(0);
} }
} }

5
prosjekt.X/i2c.h
View File

@ -20,8 +20,9 @@ extern "C" {
#include <stdbool.h> #include <stdbool.h>
#include <util/twi.h> #include <util/twi.h>
// Received data info // Received data buffer size
#define I2C_RECV_BUF_SIZE 64 // The size is larger than any expected command lenght
#define I2C_RECV_BUF_SIZE 16
// Reset recv to initial state // Reset recv to initial state
void i2c_reset_recv(); void i2c_reset_recv();