| 133 | } // namespace |
| 134 | |
| 135 | void twi_setClock(uint32_t freq) |
| 136 | { |
| 137 | auto sys = System.getCpuFrequency(); |
| 138 | if(sys == eCF_80MHz) { |
| 139 | if(freq <= 100000) { |
| 140 | twi_dcount = 16; //about 100KHz |
| 141 | } else if(freq <= 200000) { |
| 142 | twi_dcount = 5; //about 200KHz |
| 143 | } else if(freq <= 300000) { |
| 144 | twi_dcount = 2; //about 300KHz |
| 145 | } else { |
| 146 | twi_dcount = 0; //about 400KHz |
| 147 | } |
| 148 | } else { // Assume eCF_160MHz |
| 149 | if(freq <= 100000) { |
| 150 | twi_dcount = 28; //about 100KHz |
| 151 | } else if(freq <= 200000) { |
| 152 | twi_dcount = 12; //about 200KHz |
| 153 | } else if(freq <= 300000) { |
| 154 | twi_dcount = 5; //about 300KHz |
| 155 | } else if(freq <= 400000) { |
| 156 | twi_dcount = 3; //about 400KHz |
| 157 | } else if(freq <= 500000) { |
| 158 | twi_dcount = 1; //about 500KHz |
| 159 | } else { |
| 160 | twi_dcount = 0; //about 600KHz |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | void twi_setClockStretchLimit(uint32_t limit) |
| 166 | { |
no test coverage detected