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printing complete status infos

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This commit is contained in:
hugo LAMY
2025-03-16 17:36:48 +01:00
parent 35582f4286
commit e4bbf40bb8
4 changed files with 173 additions and 49 deletions
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10
module06/ex01/header.h
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@@ -29,15 +29,15 @@ void i2c_start_repeat(void);
void i2c_send_addr_w(uint8_t slave_address); void i2c_send_addr_w(uint8_t slave_address);
void i2c_send_addr_r(uint8_t slave_address); void i2c_send_addr_r(uint8_t slave_address);
void i2c_write(unsigned char data); void i2c_write(unsigned char data);
void i2c_read(void); uint8_t i2c_read(void);
void i2c_stop(void); void i2c_stop(void);
// uart.c // uart.c
void uart_init(); void uart_init();
void uart_tx(char c); void uart_tx(char c);
void uart_printstr(const char* str); uint16_t uart_printstr(const char* str);
void uart_printstr_endl(const char* str); uint16_t uart_printstr_endl(const char* str);
void uart_printstr_itoa_base(uint64_t value, uint8_t base); uint16_t uart_printstr_itoa_base(uint64_t value, uint8_t base);
void uart_printstr_itoa_base_endl(uint64_t value, uint8_t base); uint16_t uart_printstr_itoa_base_endl(uint64_t value, uint8_t base);
// math.c // math.c
void int_to_hex_string(uint64_t value, char *out, uint8_t num_digits); void int_to_hex_string(uint64_t value, char *out, uint8_t num_digits);
void int_to_string_base(uint64_t value, char *buffer, uint8_t base); void int_to_string_base(uint64_t value, char *buffer, uint8_t base);

12
module06/ex01/i2c.c
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@@ -71,7 +71,7 @@ void i2c_send_addr_r(uint8_t slave_address) {
// } // }
} }
void i2c_write(unsigned char data) { void i2c_write(uint8_t data) {
if (i2c_status == STOP) { if (i2c_status == STOP) {
return; return;
} }
@@ -85,18 +85,20 @@ void i2c_write(unsigned char data) {
// } // }
} }
void i2c_read(void) { uint8_t i2c_read(void) {
if (i2c_status == STOP) { if (i2c_status == STOP) {
return; return;
} }
// TWDR = data; // 22.9.4 : (Data Register) load data into TWDR register
// TWCR = SEND_CONTINUE_TRANSMISSION; // p225 example code : Load DATA into TWDR Register. Clear TWINT bit in TWCR to start transmission of data TWCR = SEND_CONTINUE_TRANSMISSION; // 22.7.1 : Master Transmitter Mode
// while (!(TEST(TWCR, TWINT))); // p225 example code : Wait for TWINT Flag set. This indicates that the DATA has been transmitted, and ACK/NACK has been received while (!(TEST(TWCR, TWINT))); // 22.7.1 : Wait for TWINT Flag set. This indicates that the SLA+R/W has been transmitted, and ACK/NACK has been received
// uint8_t status = TWSR & 0b11111000; // p225 example code : Check status for Receiver mode. Mask prescaler bits. If status different from MT_DATA_ACK go to ERROR // uint8_t status = TWSR & 0b11111000; // p225 example code : Check status for Receiver mode. Mask prescaler bits. If status different from MT_DATA_ACK go to ERROR
// if (status != TW_MT_DATA_ACK) { // if (status != TW_MT_DATA_ACK) {
// return i2c_stop(); // return i2c_stop();
// } // }
return TWDR; // 22.9.4 : (Data Register) load data into TWDR register
} }
void i2c_stop(void) { void i2c_stop(void) {

173
module06/ex01/main.c
View File

@@ -278,6 +278,52 @@ send stop : 110000
after stop : 11111000 after stop : 11111000
*/ */
/*
init i2c : 11111000 no state information available
after init : 11111000
start transmission : 11111000
after start : 1000 start condition transmitted
send SLA+W : 1000
after SLA+W : 11000 SLA+W transmitted, ACK received
send 0xAC (trigger measurement) : 11000
after 0xAC : 101000
send parameter 1st byte 0x33 : 101000
after 0x33 : 101000
send parameter 2nd byte 0x00 : 101000
after 0x00 : 101000
send repeat start : 101000
after repeat start : 10000
send SLA+R : 10000
after SLA+R : 1000000
read 1 data : 1000000
after read : 1011000
````````````````````````read 2 data : 1011000
after read : 1011000
read 3 data : 1011000
after read : 1011000
```````````````````````````````````````` : read 4 data : 1011000
after read : 1011000
`read 5 data : 1011000
after read : 1011000
read 6 data : 1011000
after read : 1011000
read 7 data : 1011000
after read : 1011000
```````````````````````````` : read 8 data : 1011000
after read : 1011000
` : read 9 data : 1011000
after read : 1011000
` :
send stop : 1011000
after stop : 11111000
*/
// status codes : // status codes :
// -- Master -- // -- Master --
// TW_BUS_ERROR 0x00 = 0b0 = 0 -> illegal start or stop condition // TW_BUS_ERROR 0x00 = 0b0 = 0 -> illegal start or stop condition
@@ -303,12 +349,41 @@ send stop : 110000
void print_hex_value(char c) {} void print_hex_value(char c) {}
void print_status_meaning(uint16_t status) {
switch (status) {
case 0x00: uart_printstr("TW_BUS_ERROR -> Illegal start or stop condition"); break;
case 0x08: uart_printstr("TW_START -> Start condition transmitted"); break;
case 0x10: uart_printstr("TW_REP_START -> Repeated start condition transmitted"); break;
case 0x18: uart_printstr("TW_MT_SLA_ACK -> SLA+W transmitted, ACK received"); break;
case 0x20: uart_printstr("TW_MT_SLA_NACK -> SLA+W transmitted, NACK received"); break;
case 0x28: uart_printstr("TW_MT_DATA_ACK -> Data transmitted, ACK received"); break;
case 0x30: uart_printstr("TW_MT_DATA_NACK -> Data transmitted, NACK received"); break;
case 0x38: uart_printstr("TW_MT_ARB_LOST/TW_MR_ARB_LOST -> Arbitration lost in SLA+W/R or Nack"); break;
case 0x40: uart_printstr("TW_MR_SLA_ACK -> SLA+R transmitted, ACK received"); break;
case 0x48: uart_printstr("TW_MR_SLA_NACK -> SLA+R transmitted, NACK received"); break;
case 0x50: uart_printstr("TW_MR_DATA_ACK -> Data received, ACK returned"); break;
case 0x58: uart_printstr("TW_MR_DATA_NACK -> Data received, NACK returned"); break;
case 0x98: uart_printstr("TW_SR_GCALL_DATA_NACK -> General call data received, NACK returned"); break;
case 0xA8: uart_printstr("TW_ST_SLA_ACK -> SLA+R received, ACK returned"); break;
case 0xF8: uart_printstr("TW_NO_INFO -> No state information available"); break;
default: uart_printstr("Unknown status code");
}
}
void print_status(char *str) { void print_status(char *str) {
uint8_t status; uint8_t status;
status = TWSR & 0b11111000; // Table 22-2. Status codes for Master Transmitter Mode status = TWSR & 0b11111000; // Table 22-2. Status codes for Master Transmitter Mode
uart_printstr(str); uint16_t size = 53;
uart_printstr(" : "); size -= uart_printstr(str);
uart_printstr_itoa_base_endl(status, 2); size -= uart_printstr(" : ");
size -= uart_printstr_itoa_base(status, 2);
// print status meaning
while (size--) {
uart_tx(' ');
}
print_status_meaning(status);
uart_printstr_endl("");
} }
// description // description
@@ -376,33 +451,71 @@ int main() {
i2c_send_addr_r(SLAVE_ADDRESS); i2c_send_addr_r(SLAVE_ADDRESS);
print_status(" after SLA+R"); print_status(" after SLA+R");
print_status("\r\nstatus ? 0"); // print_status("\r\nstatus ? 0");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 10"); // print_status("status ? 10");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 20"); // print_status("status ? 20");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 30"); // print_status("status ? 30");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 40"); // print_status("status ? 40");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 50"); // print_status("status ? 50");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 60"); // print_status("status ? 60");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 70"); // print_status("status ? 70");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 80"); // print_status("status ? 80");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 90"); // print_status("status ? 90");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 100"); // print_status("status ? 100");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 110"); // print_status("status ? 110");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 120"); // print_status("status ? 120");
_delay_ms(10); // _delay_ms(10);
print_status("status ? 130"); // print_status("status ? 130");
uint8_t data;
print_status("\r\nread 1 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("read 2 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("read 3 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("read 4 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("read 5 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("read 6 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("read 7 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("read 8 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("read 9 data");
data = i2c_read();
print_status(" after read");
uart_printstr_itoa_base_endl(data, 10);
print_status("\r\nsend stop"); print_status("\r\nsend stop");
i2c_stop(); i2c_stop();

27
module06/ex01/uart.c
View File

@@ -27,27 +27,36 @@ void uart_tx(char c) {
UDR0 = (unsigned char) c; // 20.11.1 : Put data into buffer, UDRn – USART I/O Data Register (read and write) UDR0 = (unsigned char) c; // 20.11.1 : Put data into buffer, UDRn – USART I/O Data Register (read and write)
} }
void uart_printstr(const char* str) { uint16_t uart_printstr(const char* str) {
uint16_t size = 0;
while (*str) { while (*str) {
uart_tx(*str); uart_tx(*str);
str++; str++;
size++;
} }
return size;
} }
void uart_printstr_endl(const char* str) { uint16_t uart_printstr_endl(const char* str) {
uart_printstr(str); uint16_t size = 0;
uart_printstr("\r\n"); size += uart_printstr(str);
size += uart_printstr("\r\n");
return size;
} }
void uart_printstr_itoa_base(uint64_t value, uint8_t base) { uint16_t uart_printstr_itoa_base(uint64_t value, uint8_t base) {
char buffer[100] = {0}; char buffer[100] = {0};
uint16_t size = 0;
int_to_string_base((uint16_t)value, buffer, base); int_to_string_base((uint16_t)value, buffer, base);
uart_printstr(buffer); size += uart_printstr(buffer);
return size;
} }
void uart_printstr_itoa_base_endl(uint64_t value, uint8_t base) { uint16_t uart_printstr_itoa_base_endl(uint64_t value, uint8_t base) {
uart_printstr_itoa_base(value, base); uint16_t size = 0;
uart_printstr("\r\n"); size += uart_printstr_itoa_base(value, base);
size += uart_printstr("\r\n");
return size;
} }
// ISR(USART_RX_vect) { // Table 12-6 : we select the code for USART Receive // ISR(USART_RX_vect) { // Table 12-6 : we select the code for USART Receive