Revision 0167b233
Twi receiving testing code
| scout_avr/bom/tiny-twi.c | ||
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#include <avr/io.h> |
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#include <avr/interrupt.h> |
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#include <util/delay.h> |
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#define RECV_BUF_SIZE 2 |
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| ... | ... | |
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uint8_t recv_idx; |
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uint8_t recv_data[RECV_BUF_SIZE]; |
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slave_rx_t onDataRecieved; |
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static void twi_set_ctr(char n) {
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USISR &= ~0x0F; |
| ... | ... | |
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recv_idx++; |
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if (recv_idx == RECV_BUF_SIZE) {
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twi_ready(); |
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// TODO callback
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onDataRecieved(recv_data, RECV_BUF_SIZE);
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} |
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break; |
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|
| ... | ... | |
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} |
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} |
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void smb_init() {
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void smb_init(slave_rx_t callback) {
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state = START; |
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// TODO do we want USICS0 (3)? |
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USICR = _BV(USIWM1) | _BV(USIWM0) | _BV(USICS1); |
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twi_ready(); |
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onDataRecieved = callback; |
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} |
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void smb_set_address(uint8_t addr) {
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address = addr; |
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} |
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void testCB(uint8_t* data, int length) {
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PORTB |= _BV(PB4); |
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if (data[0]) |
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_delay_ms(1000); |
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else |
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_delay_ms(500); |
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PORTB &= ~_BV(PB4); |
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} |
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int main() {
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smb_set_address(5); |
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DDRB |= _BV(DDB4); |
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smb_init(testCB); |
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} |
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