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printing data but without delay, why

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hugo LAMY
2025-03-16 18:02:43 +01:00
parent e4bbf40bb8
commit 6fa2df3b44
1 changed files with 72 additions and 66 deletions
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136
module06/ex01/main.c
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@@ -324,6 +324,61 @@ send stop : 1011000
after stop : 11111000 after stop : 11111000
*/ */
/*
init i2c : 11111000 TW_NO_INFO -> No state information available
after init : 11111000 TW_NO_INFO -> No state information available
start transmission : 11111000 TW_NO_INFO -> No state information available
after start : 1000 TW_START -> Start condition transmitted
send SLA+W : 1000 TW_START -> Start condition transmitted
after SLA+W : 11000 TW_MT_SLA_ACK -> SLA+W transmitted, ACK received
send 0xAC (trigger measurement) : 11000 TW_MT_SLA_ACK -> SLA+W transmitted, ACK received
after 0xAC : 101000 TW_MT_DATA_ACK -> Data transmitted, ACK received
send parameter 1st byte 0x33 : 101000 TW_MT_DATA_ACK -> Data transmitted, ACK received
after 0x33 : 101000 TW_MT_DATA_ACK -> Data transmitted, ACK received
send parameter 2nd byte 0x00 : 101000 TW_MT_DATA_ACK -> Data transmitted, ACK received
after 0x00 : 101000 TW_MT_DATA_ACK -> Data transmitted, ACK received
send repeat start : 101000 TW_MT_DATA_ACK -> Data transmitted, ACK received
after repeat start : 10000 TW_REP_START -> Repeated start condition transmitted
send SLA+R : 10000 TW_REP_START -> Repeated start condition transmitted
after SLA+R : 1000000 TW_MR_SLA_ACK -> SLA+R transmitted, ACK received
read 1 data : 1000000 TW_MR_SLA_ACK -> SLA+R transmitted, ACK received
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
152
read 2 data : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
196
read 3 data : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
182
read 4 data : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
213
read 5 data : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
255
read 6 data : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
212
read 7 data : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
164
read 8 data : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
255
read 9 data : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after read : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
255
send stop : 1011000 TW_MR_DATA_NACK -> Data received, NACK returned
after stop : 11111000 TW_NO_INFO -> No state information available
*/
// 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
@@ -347,7 +402,11 @@ send stop : 1011000
#define SLAVE_ADDRESS 0x38 // doc AHT20, 7.3 : address of thermistor : 0b111000, 56 #define SLAVE_ADDRESS 0x38 // doc AHT20, 7.3 : address of thermistor : 0b111000, 56
void print_hex_value(char c) {} void print_hex_value(char c) {
char buffer[3] = {0};
int_to_hex_string(c, buffer, 2);
uart_printstr(buffer);
}
void print_status_meaning(uint16_t status) { void print_status_meaning(uint16_t status) {
switch (status) { switch (status) {
@@ -371,6 +430,7 @@ void print_status_meaning(uint16_t status) {
} }
void print_status(char *str) { void print_status(char *str) {
return;
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
uint16_t size = 53; uint16_t size = 53;
@@ -450,72 +510,18 @@ int main() {
print_status("\r\nsend SLA+R"); print_status("\r\nsend SLA+R");
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\nbefore read data");
// _delay_ms(10);
// print_status("status ? 10");
// _delay_ms(10);
// print_status("status ? 20");
// _delay_ms(10);
// print_status("status ? 30");
// _delay_ms(10);
// print_status("status ? 40");
// _delay_ms(10);
// print_status("status ? 50");
// _delay_ms(10);
// print_status("status ? 60");
// _delay_ms(10);
// print_status("status ? 70");
// _delay_ms(10);
// print_status("status ? 80");
// _delay_ms(10);
// print_status("status ? 90");
// _delay_ms(10);
// print_status("status ? 100");
// _delay_ms(10);
// print_status("status ? 110");
// _delay_ms(10);
// print_status("status ? 120");
// _delay_ms(10);
// print_status("status ? 130");
uint8_t data; uint8_t data;
print_status("\r\nread 1 data"); for (uint8_t i = 0; i < 10; i++) {
data = i2c_read(); data = i2c_read();
print_status(" after read"); print_hex_value(data);
uart_printstr_itoa_base_endl(data, 10); if (i < 9) {
print_status("read 2 data"); uart_tx(' ');
data = i2c_read(); }
print_status(" after read"); }
uart_printstr_itoa_base_endl(data, 10); uart_printstr_endl("");
print_status("read 3 data"); print_status(" after read 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();