| 184 | } |
| 185 | |
| 186 | uint8_t twi_writeTo(uint8_t address, const uint8_t* buf, size_t len, bool sendStop) |
| 187 | { |
| 188 | if(!twi_write_start()) { |
| 189 | return 4; //line busy |
| 190 | } |
| 191 | if(!twi_write_byte(((address << 1) | 0) & 0xFF)) { |
| 192 | if(sendStop) { |
| 193 | twi_write_stop(); |
| 194 | } |
| 195 | return 2; //received NACK on transmit of address |
| 196 | } |
| 197 | for(unsigned i = 0; i < len; i++) { |
| 198 | if(!twi_write_byte(buf[i])) { |
| 199 | if(sendStop) { |
| 200 | twi_write_stop(); |
| 201 | } |
| 202 | return 3; //received NACK on transmit of data |
| 203 | } |
| 204 | } |
| 205 | if(sendStop) { |
| 206 | twi_write_stop(); |
| 207 | } |
| 208 | for(unsigned i = 0; SDA_READ() == 0 && i++ < 10;) { |
| 209 | SCL_LOW(); |
| 210 | twi_delay(twi_dcount); |
| 211 | SCL_HIGH(); |
| 212 | twi_delay(twi_dcount); |
| 213 | } |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | uint8_t twi_readFrom(uint8_t address, uint8_t* buf, size_t len, bool sendStop) |
| 218 | { |
no test coverage detected