paul@0 | 1 | #include "cpu.h" |
paul@0 | 2 | #include "pic32_c.h" |
paul@3 | 3 | #include "init.h" |
paul@0 | 4 | |
paul@0 | 5 | |
paul@0 | 6 | |
paul@0 | 7 | /* Basic memory and pin initialisation. */ |
paul@0 | 8 | |
paul@0 | 9 | void init_memory(void) |
paul@0 | 10 | { |
paul@0 | 11 | /* |
paul@0 | 12 | Configure RAM. |
paul@0 | 13 | See: http://microchipdeveloper.com/32bit:mx-arch-exceptions-processor-initialization |
paul@0 | 14 | */ |
paul@0 | 15 | |
paul@0 | 16 | uint32_t config = REG(BMXCON); |
paul@0 | 17 | |
paul@0 | 18 | /* Set zero wait states for address setup. */ |
paul@0 | 19 | |
paul@0 | 20 | config &= ~(1 << 6); /* BMXCON<6> = BMXWSDRM = 0 */ |
paul@0 | 21 | |
paul@0 | 22 | /* Set bus arbitration mode. */ |
paul@0 | 23 | |
paul@0 | 24 | config &= ~0b111; |
paul@0 | 25 | config |= 0b010; /* BMXCON<2:0> = BMXARB<2:0> = 2 */ |
paul@0 | 26 | |
paul@0 | 27 | REG(BMXCON) = config; |
paul@0 | 28 | } |
paul@0 | 29 | |
paul@0 | 30 | void init_pins(void) |
paul@0 | 31 | { |
paul@0 | 32 | /* DEVCFG0<2> also needs setting to 0 before the program is run. */ |
paul@0 | 33 | |
paul@0 | 34 | CLR_REG(CFGCON, 1 << 3); /* CFGCON<3> = JTAGEN = 0 */ |
paul@0 | 35 | } |
paul@0 | 36 | |
paul@0 | 37 | void init_outputs(void) |
paul@0 | 38 | { |
paul@0 | 39 | /* Remove analogue features from pins. */ |
paul@0 | 40 | |
paul@0 | 41 | REG(ANSELA) = 0; |
paul@0 | 42 | REG(ANSELB) = 0; |
paul@0 | 43 | |
paul@3 | 44 | /* Set pins as outputs. */ |
paul@3 | 45 | |
paul@0 | 46 | REG(TRISA) = 0; |
paul@0 | 47 | REG(TRISB) = 0; |
paul@0 | 48 | |
paul@3 | 49 | /* Clear outputs. */ |
paul@3 | 50 | |
paul@0 | 51 | REG(PORTA) = 0; |
paul@0 | 52 | REG(PORTB) = 0; |
paul@0 | 53 | } |
paul@0 | 54 | |
paul@0 | 55 | |
paul@0 | 56 | |
paul@0 | 57 | /* Peripheral pin configuration. */ |
paul@0 | 58 | |
paul@0 | 59 | void config_uart(void) |
paul@0 | 60 | { |
paul@3 | 61 | /* NOTE: Configuring UART1 for specific pins. */ |
paul@3 | 62 | |
paul@0 | 63 | /* Map U1RX to RPB13. */ |
paul@0 | 64 | |
paul@0 | 65 | REG(U1RXR) = 0b0011; /* U1RXR<3:0> = 0011 (RPB13) */ |
paul@0 | 66 | |
paul@0 | 67 | /* Map U1TX to RPB15. */ |
paul@0 | 68 | |
paul@0 | 69 | REG(RPB15R) = 0b0001; /* RPB15R<3:0> = 0001 (U1TX) */ |
paul@0 | 70 | |
paul@0 | 71 | /* Set RPB13 to input. */ |
paul@0 | 72 | |
paul@0 | 73 | SET_REG(TRISB, 1 << 13); |
paul@0 | 74 | } |
paul@0 | 75 | |
paul@0 | 76 | void lock_config(void) |
paul@0 | 77 | { |
paul@0 | 78 | SET_REG(CFGCON, 1 << 13); /* IOLOCK = 1 */ |
paul@0 | 79 | |
paul@0 | 80 | /* Lock the configuration again. */ |
paul@0 | 81 | |
paul@0 | 82 | REG(SYSKEY) = 0x33333333; |
paul@0 | 83 | } |
paul@0 | 84 | |
paul@0 | 85 | void unlock_config(void) |
paul@0 | 86 | { |
paul@0 | 87 | /* Unlock the configuration register bits. */ |
paul@0 | 88 | |
paul@0 | 89 | REG(SYSKEY) = 0; |
paul@0 | 90 | REG(SYSKEY) = 0xAA996655; |
paul@0 | 91 | REG(SYSKEY) = 0x556699AA; |
paul@0 | 92 | |
paul@0 | 93 | CLR_REG(CFGCON, 1 << 13); /* IOLOCK = 0 */ |
paul@0 | 94 | } |
paul@0 | 95 | |
paul@0 | 96 | |
paul@0 | 97 | |
paul@0 | 98 | /* Convenience operations. */ |
paul@0 | 99 | |
paul@0 | 100 | void interrupts_on(void) |
paul@0 | 101 | { |
paul@0 | 102 | init_interrupts(); |
paul@0 | 103 | enable_interrupts(); |
paul@0 | 104 | handle_error_level(); |
paul@0 | 105 | } |
paul@0 | 106 | |
paul@0 | 107 | |
paul@0 | 108 | |
paul@3 | 109 | /* DMA configuration. */ |
paul@3 | 110 | |
paul@3 | 111 | void init_dma(void) |
paul@3 | 112 | { |
paul@3 | 113 | /* Disable DMA interrupts. */ |
paul@3 | 114 | |
paul@3 | 115 | CLR_REG(DMAIEC, 0b1111 << DMAINTBASE); /* DMA3IE...DMA0IE = 0 */ |
paul@3 | 116 | |
paul@3 | 117 | /* Clear DMA interrupt flags. */ |
paul@3 | 118 | |
paul@3 | 119 | CLR_REG(DMAIFS, 0b1111 << DMAINTBASE); /* DMA3IF...DMA0IF = 0 */ |
paul@3 | 120 | |
paul@3 | 121 | /* Enable DMA. */ |
paul@3 | 122 | |
paul@3 | 123 | SET_REG(DMACON, 1 << 15); |
paul@3 | 124 | } |
paul@3 | 125 | |
paul@3 | 126 | /* Initialise the given channel. */ |
paul@0 | 127 | |
paul@10 | 128 | void dma_init(int channel, uint8_t pri) |
paul@0 | 129 | { |
paul@7 | 130 | if ((channel < DCHMIN) || (channel > DCHMAX)) |
paul@3 | 131 | return; |
paul@3 | 132 | |
paul@3 | 133 | /* Initialise a channel. */ |
paul@3 | 134 | |
paul@10 | 135 | REG(DMA_REG(channel, DCHxCON)) = pri & 0b11; |
paul@3 | 136 | REG(DMA_REG(channel, DCHxECON)) = 0; |
paul@3 | 137 | REG(DMA_REG(channel, DCHxINT)) = 0; |
paul@3 | 138 | } |
paul@3 | 139 | |
paul@10 | 140 | /* Set the channel auto-enable mode. */ |
paul@10 | 141 | |
paul@10 | 142 | void dma_set_auto_enable(int channel, int auto_enable) |
paul@10 | 143 | { |
paul@10 | 144 | (auto_enable ? SET_REG : CLR_REG)(DMA_REG(channel, DCHxCON), 1 << 4); |
paul@10 | 145 | } |
paul@10 | 146 | |
paul@10 | 147 | /* Set the channel chaining mode. */ |
paul@10 | 148 | |
paul@10 | 149 | void dma_set_chaining(int channel, enum dma_chain chain) |
paul@10 | 150 | { |
paul@10 | 151 | (chain != dma_chain_none ? |
paul@10 | 152 | SET_REG : CLR_REG)(DMA_REG(channel, DCHxCON), 1 << 5); |
paul@10 | 153 | |
paul@10 | 154 | (chain == dma_chain_next ? |
paul@10 | 155 | SET_REG : CLR_REG)(DMA_REG(channel, DCHxCON), 1 << 8); |
paul@10 | 156 | } |
paul@10 | 157 | |
paul@3 | 158 | /* Configure a channel's initiation interrupt. */ |
paul@3 | 159 | |
paul@3 | 160 | void dma_set_interrupt(int channel, uint8_t int_num, int enable) |
paul@3 | 161 | { |
paul@7 | 162 | if ((channel < DCHMIN) || (channel > DCHMAX)) |
paul@3 | 163 | return; |
paul@0 | 164 | |
paul@3 | 165 | /* Allow an interrupt to trigger the transfer. */ |
paul@3 | 166 | |
paul@3 | 167 | REG(DMA_REG(channel, DCHxECON)) = (int_num << 8) | |
paul@3 | 168 | ((enable ? 1 : 0) << 4); |
paul@3 | 169 | } |
paul@3 | 170 | |
paul@3 | 171 | /* Set a channel's transfer parameters. */ |
paul@3 | 172 | |
paul@3 | 173 | void dma_set_transfer(int channel, |
paul@3 | 174 | uint32_t source_start_address, uint16_t source_size, |
paul@3 | 175 | uint32_t destination_start_address, uint16_t destination_size, |
paul@3 | 176 | uint16_t cell_size) |
paul@3 | 177 | { |
paul@7 | 178 | if ((channel < DCHMIN) || (channel > DCHMAX)) |
paul@3 | 179 | return; |
paul@0 | 180 | |
paul@3 | 181 | REG(DMA_REG(channel, DCHxSSIZ)) = source_size; |
paul@3 | 182 | REG(DMA_REG(channel, DCHxSSA)) = source_start_address; |
paul@3 | 183 | REG(DMA_REG(channel, DCHxDSIZ)) = destination_size; |
paul@3 | 184 | REG(DMA_REG(channel, DCHxDSA)) = destination_start_address; |
paul@3 | 185 | REG(DMA_REG(channel, DCHxCSIZ)) = cell_size; |
paul@3 | 186 | } |
paul@3 | 187 | |
paul@3 | 188 | /* Configure interrupts caused by the channel. */ |
paul@0 | 189 | |
paul@3 | 190 | void dma_init_interrupt(int channel, uint8_t conditions, |
paul@7 | 191 | uint8_t pri, uint8_t sub) |
paul@3 | 192 | { |
paul@7 | 193 | if ((channel < DCHMIN) || (channel > DCHMAX)) |
paul@3 | 194 | return; |
paul@0 | 195 | |
paul@10 | 196 | /* Disable channel interrupt and clear interrupt flag. */ |
paul@10 | 197 | |
paul@10 | 198 | CLR_REG(DMAIEC, DMA_INT_FLAGS(channel, 1)); |
paul@10 | 199 | CLR_REG(DMAIFS, DMA_INT_FLAGS(channel, 1)); |
paul@10 | 200 | |
paul@3 | 201 | /* Produce an interrupt for the provided conditions. */ |
paul@3 | 202 | |
paul@3 | 203 | REG(DMA_REG(channel, DCHxINT)) = conditions << 16; |
paul@3 | 204 | |
paul@3 | 205 | /* Set interrupt priorities. */ |
paul@3 | 206 | |
paul@14 | 207 | REG(DMAIPC) = (REG(DMAIPC) & |
paul@14 | 208 | ~(DMA_IPC_PRI(channel, 7, 3))) | |
paul@7 | 209 | DMA_IPC_PRI(channel, pri, sub); |
paul@0 | 210 | |
paul@0 | 211 | /* Enable interrupt. */ |
paul@0 | 212 | |
paul@10 | 213 | SET_REG(DMAIEC, DMA_INT_FLAGS(channel, 1)); |
paul@3 | 214 | } |
paul@3 | 215 | |
paul@3 | 216 | /* Enable a DMA channel. */ |
paul@3 | 217 | |
paul@3 | 218 | void dma_on(int channel) |
paul@3 | 219 | { |
paul@7 | 220 | if ((channel < DCHMIN) || (channel > DCHMAX)) |
paul@3 | 221 | return; |
paul@3 | 222 | |
paul@3 | 223 | /* Enable channel. */ |
paul@3 | 224 | |
paul@3 | 225 | SET_REG(DMA_REG(channel, DCHxCON), 1 << 7); |
paul@3 | 226 | } |
paul@3 | 227 | |
paul@7 | 228 | |
paul@7 | 229 | |
paul@14 | 230 | /* Output compare configuration. */ |
paul@14 | 231 | |
paul@14 | 232 | void oc_init(int unit, uint8_t mode, int timer) |
paul@14 | 233 | { |
paul@14 | 234 | if ((unit < OCMIN) || (unit > OCMAX)) |
paul@14 | 235 | return; |
paul@14 | 236 | |
paul@14 | 237 | REG(OC_REG(unit, OCxCON)) = (timer == 3 ? (1 << 3) : 0) | (mode & 0b111); |
paul@14 | 238 | } |
paul@14 | 239 | |
paul@14 | 240 | /* Set the start value for the pulse. */ |
paul@14 | 241 | |
paul@14 | 242 | void oc_set_pulse(int unit, uint32_t start) |
paul@14 | 243 | { |
paul@14 | 244 | if ((unit < OCMIN) || (unit > OCMAX)) |
paul@14 | 245 | return; |
paul@14 | 246 | |
paul@14 | 247 | REG(OC_REG(unit, OCxR)) = start; |
paul@14 | 248 | } |
paul@14 | 249 | |
paul@14 | 250 | /* Set the end value for the pulse. */ |
paul@14 | 251 | |
paul@14 | 252 | void oc_set_pulse_end(int unit, uint32_t end) |
paul@14 | 253 | { |
paul@14 | 254 | if ((unit < OCMIN) || (unit > OCMAX)) |
paul@14 | 255 | return; |
paul@14 | 256 | |
paul@14 | 257 | REG(OC_REG(unit, OCxRS)) = end; |
paul@14 | 258 | } |
paul@14 | 259 | |
paul@14 | 260 | /* Configure interrupts caused by the unit. */ |
paul@14 | 261 | |
paul@14 | 262 | void oc_init_interrupt(int unit, uint8_t pri, uint8_t sub) |
paul@14 | 263 | { |
paul@14 | 264 | if ((unit < OCMIN) || (unit > OCMAX)) |
paul@14 | 265 | return; |
paul@14 | 266 | |
paul@14 | 267 | /* Disable interrupt and clear interrupt flag. */ |
paul@14 | 268 | |
paul@14 | 269 | CLR_REG(OCIEC, OC_INT_FLAGS(unit, OCxIE)); |
paul@14 | 270 | CLR_REG(OCIFS, OC_INT_FLAGS(unit, OCxIF)); |
paul@14 | 271 | |
paul@14 | 272 | /* Set interrupt priorities. */ |
paul@14 | 273 | |
paul@14 | 274 | REG(OC_IPC_REG(unit)) = (REG(OC_IPC_REG(unit)) & |
paul@14 | 275 | ~(OC_IPC_PRI(unit, 7, 3))) | |
paul@14 | 276 | OC_IPC_PRI(unit, pri, sub); |
paul@14 | 277 | |
paul@14 | 278 | /* Enable interrupt. */ |
paul@14 | 279 | |
paul@14 | 280 | SET_REG(OCIEC, OC_INT_FLAGS(unit, OCxIE)); |
paul@14 | 281 | } |
paul@14 | 282 | |
paul@14 | 283 | /* Enable a unit. */ |
paul@14 | 284 | |
paul@14 | 285 | void oc_on(int unit) |
paul@14 | 286 | { |
paul@14 | 287 | if ((unit < OCMIN) || (unit > OCMAX)) |
paul@14 | 288 | return; |
paul@14 | 289 | |
paul@14 | 290 | SET_REG(OC_REG(unit, OCxCON), 1 << 15); |
paul@14 | 291 | } |
paul@14 | 292 | |
paul@14 | 293 | |
paul@14 | 294 | |
paul@7 | 295 | /* Timer configuration. */ |
paul@7 | 296 | |
paul@7 | 297 | void timer_init(int timer, uint8_t prescale, uint16_t limit) |
paul@7 | 298 | { |
paul@7 | 299 | /* NOTE: Should convert from the real prescale value. */ |
paul@7 | 300 | |
paul@7 | 301 | REG(TIMER_REG(timer, TxCON)) = (prescale & 0b111) << 4; |
paul@7 | 302 | REG(TIMER_REG(timer, TMRx)) = 0; |
paul@7 | 303 | REG(TIMER_REG(timer, PRx)) = limit; |
paul@7 | 304 | } |
paul@7 | 305 | |
paul@7 | 306 | /* Configure interrupts caused by the timer. */ |
paul@7 | 307 | |
paul@7 | 308 | void timer_init_interrupt(int timer, uint8_t pri, uint8_t sub) |
paul@7 | 309 | { |
paul@7 | 310 | if ((timer < TIMERMIN) || (timer > TIMERMAX)) |
paul@7 | 311 | return; |
paul@7 | 312 | |
paul@14 | 313 | /* Disable interrupt and clear interrupt flag. */ |
paul@14 | 314 | |
paul@14 | 315 | CLR_REG(TIMERIEC, TIMER_INT_FLAGS(timer, TxIE)); |
paul@14 | 316 | CLR_REG(TIMERIFS, TIMER_INT_FLAGS(timer, TxIF)); |
paul@14 | 317 | |
paul@7 | 318 | /* Set interrupt priorities. */ |
paul@7 | 319 | |
paul@7 | 320 | REG(TIMER_IPC_REG(timer)) = (REG(TIMER_IPC_REG(timer)) & |
paul@7 | 321 | ~(TIMER_IPC_PRI(timer, 7, 3))) | |
paul@7 | 322 | TIMER_IPC_PRI(timer, pri, sub); |
paul@7 | 323 | |
paul@7 | 324 | /* Enable interrupt. */ |
paul@7 | 325 | |
paul@7 | 326 | SET_REG(TIMERIEC, TIMER_INT_FLAGS(timer, TxIE)); |
paul@7 | 327 | } |
paul@7 | 328 | |
paul@7 | 329 | /* Enable a timer. */ |
paul@7 | 330 | |
paul@7 | 331 | void timer_on(int timer) |
paul@7 | 332 | { |
paul@7 | 333 | if ((timer < TIMERMIN) || (timer > TIMERMAX)) |
paul@7 | 334 | return; |
paul@7 | 335 | |
paul@7 | 336 | SET_REG(TIMER_REG(timer, TxCON), 1 << 15); |
paul@7 | 337 | } |
paul@7 | 338 | |
paul@7 | 339 | |
paul@7 | 340 | |
paul@3 | 341 | /* UART configuration. */ |
paul@3 | 342 | |
paul@7 | 343 | void uart_init(int uart, uint32_t baudrate) |
paul@3 | 344 | { |
paul@3 | 345 | /* NOTE: Configured in the initial payload. */ |
paul@3 | 346 | |
paul@3 | 347 | uint32_t FPB = 24000000; |
paul@3 | 348 | |
paul@7 | 349 | if ((uart < UARTMIN) || (uart > UARTMAX)) |
paul@3 | 350 | return; |
paul@3 | 351 | |
paul@3 | 352 | /* Disable the UART (ON). */ |
paul@3 | 353 | |
paul@7 | 354 | CLR_REG(UART_REG(uart, UxMODE), 1 << 15); |
paul@3 | 355 | |
paul@3 | 356 | /* Set the baud rate. For example: |
paul@3 | 357 | |
paul@3 | 358 | UxBRG<15:0> = BRG |
paul@3 | 359 | = (FPB / (16 * baudrate)) - 1 |
paul@3 | 360 | = (24000000 / (16 * 115200)) - 1 |
paul@3 | 361 | = 12 |
paul@3 | 362 | */ |
paul@3 | 363 | |
paul@7 | 364 | REG(UART_REG(uart, UxBRG)) = (FPB / (16 * baudrate)) - 1; |
paul@3 | 365 | } |
paul@3 | 366 | |
paul@3 | 367 | /* Configure interrupts caused by the UART. */ |
paul@3 | 368 | |
paul@7 | 369 | void uart_init_interrupt(int uart, uint8_t conditions, |
paul@7 | 370 | uint8_t pri, uint8_t sub) |
paul@3 | 371 | { |
paul@7 | 372 | if ((uart < UARTMIN) || (uart > UARTMAX)) |
paul@3 | 373 | return; |
paul@3 | 374 | |
paul@14 | 375 | /* Disable interrupts and clear interrupt flags. */ |
paul@14 | 376 | |
paul@14 | 377 | CLR_REG(UARTIEC, UART_INT_FLAGS(uart, UxTIE | UxRIE | UxEIE)); |
paul@14 | 378 | CLR_REG(UARTIFS, UART_INT_FLAGS(uart, UxTIF | UxRIF | UxEIF)); |
paul@14 | 379 | |
paul@3 | 380 | /* Set priorities: UxIP = pri; UxIS = sub */ |
paul@3 | 381 | |
paul@14 | 382 | REG(UART_IPC_REG(uart)) = (REG(UART_IPC_REG(uart)) & |
paul@14 | 383 | ~UART_IPC_PRI(uart, 7, 3)) | |
paul@14 | 384 | UART_IPC_PRI(uart, pri, sub); |
paul@3 | 385 | |
paul@7 | 386 | /* Enable interrupts. */ |
paul@3 | 387 | |
paul@7 | 388 | SET_REG(UARTIEC, UART_INT_FLAGS(uart, conditions)); |
paul@3 | 389 | } |
paul@3 | 390 | |
paul@3 | 391 | /* Enable a UART. */ |
paul@3 | 392 | |
paul@7 | 393 | void uart_on(int uart) |
paul@3 | 394 | { |
paul@7 | 395 | if ((uart < UARTMIN) || (uart > UARTMAX)) |
paul@3 | 396 | return; |
paul@3 | 397 | |
paul@3 | 398 | /* Enable receive (URXEN) and transmit (UTXEN). */ |
paul@3 | 399 | |
paul@7 | 400 | SET_REG(UART_REG(uart, UxSTA), (1 << 12) | (1 << 10)); |
paul@0 | 401 | |
paul@0 | 402 | /* Start UART. */ |
paul@0 | 403 | |
paul@7 | 404 | SET_REG(UART_REG(uart, UxMODE), 1 << 15); |
paul@3 | 405 | } |
paul@3 | 406 | |
paul@3 | 407 | |
paul@3 | 408 | |
paul@3 | 409 | /* Utility functions. */ |
paul@3 | 410 | |
paul@3 | 411 | /* Return encoded interrupt priorities. */ |
paul@3 | 412 | |
paul@3 | 413 | static uint8_t PRI(uint8_t pri, uint8_t sub) |
paul@3 | 414 | { |
paul@3 | 415 | return ((pri & 0b111) << 2) | (sub & 0b11); |
paul@3 | 416 | } |
paul@3 | 417 | |
paul@10 | 418 | /* Return the DMA interrupt flags for combining with a register. */ |
paul@10 | 419 | |
paul@10 | 420 | int DMA_INT_FLAGS(int channel, uint8_t flags) |
paul@10 | 421 | { |
paul@10 | 422 | return (flags & 0b1) << (DMAINTBASE + (channel - DCHMIN)); |
paul@10 | 423 | } |
paul@10 | 424 | |
paul@3 | 425 | /* Return encoded DMA interrupt priorities for combining with a register. */ |
paul@3 | 426 | |
paul@3 | 427 | uint32_t DMA_IPC_PRI(int channel, uint8_t pri, uint8_t sub) |
paul@3 | 428 | { |
paul@3 | 429 | return PRI(pri, sub) << (DCHIPCBASE + (channel - DCHMIN) * DCHIPCSTEP); |
paul@0 | 430 | } |
paul@3 | 431 | |
paul@14 | 432 | /* Return encoded output compare interrupt priorities for combining with a register. */ |
paul@14 | 433 | |
paul@14 | 434 | uint32_t OC_IPC_PRI(int unit, uint8_t pri, uint8_t sub) |
paul@14 | 435 | { |
paul@14 | 436 | (void) unit; |
paul@14 | 437 | return PRI(pri, sub) << OCIPCBASE; |
paul@14 | 438 | } |
paul@14 | 439 | |
paul@14 | 440 | /* Return the output compare interrupt priorities register. */ |
paul@14 | 441 | |
paul@14 | 442 | uint32_t OC_IPC_REG(int unit) |
paul@14 | 443 | { |
paul@14 | 444 | switch (unit) |
paul@14 | 445 | { |
paul@14 | 446 | case 1: return OC1IPC; |
paul@14 | 447 | case 2: return OC2IPC; |
paul@14 | 448 | case 3: return OC3IPC; |
paul@14 | 449 | case 4: return OC4IPC; |
paul@14 | 450 | case 5: return OC5IPC; |
paul@14 | 451 | default: return 0; /* should not occur */ |
paul@14 | 452 | } |
paul@14 | 453 | } |
paul@14 | 454 | |
paul@14 | 455 | /* Return the output compare interrupt flags for combining with a register. */ |
paul@14 | 456 | |
paul@14 | 457 | int OC_INT_FLAGS(int unit, uint8_t flags) |
paul@14 | 458 | { |
paul@14 | 459 | return (flags & 0b1) << (OCINTBASE + (unit - OCMIN) * OCINTSTEP); |
paul@14 | 460 | } |
paul@14 | 461 | |
paul@7 | 462 | /* Return encoded timer interrupt priorities for combining with a register. */ |
paul@7 | 463 | |
paul@7 | 464 | uint32_t TIMER_IPC_PRI(int timer, uint8_t pri, uint8_t sub) |
paul@7 | 465 | { |
paul@7 | 466 | (void) timer; |
paul@7 | 467 | return PRI(pri, sub) << TIMERIPCBASE; |
paul@7 | 468 | } |
paul@7 | 469 | |
paul@7 | 470 | /* Return the timer interrupt priorities register. */ |
paul@7 | 471 | |
paul@7 | 472 | uint32_t TIMER_IPC_REG(int timer) |
paul@7 | 473 | { |
paul@7 | 474 | switch (timer) |
paul@7 | 475 | { |
paul@7 | 476 | case 1: return TIMER1IPC; |
paul@7 | 477 | case 2: return TIMER2IPC; |
paul@7 | 478 | case 3: return TIMER3IPC; |
paul@7 | 479 | case 4: return TIMER4IPC; |
paul@7 | 480 | case 5: return TIMER5IPC; |
paul@7 | 481 | default: return 0; /* should not occur */ |
paul@7 | 482 | } |
paul@7 | 483 | } |
paul@7 | 484 | |
paul@7 | 485 | /* Return the timer interrupt flags for combining with a register. */ |
paul@7 | 486 | |
paul@7 | 487 | int TIMER_INT_FLAGS(int timer, uint8_t flags) |
paul@7 | 488 | { |
paul@7 | 489 | return (flags & 0b1) << (TIMERINTBASE + (timer - TIMERMIN) * TIMERINTSTEP); |
paul@7 | 490 | } |
paul@7 | 491 | |
paul@3 | 492 | /* Return encoded UART interrupt priorities for combining with a register. */ |
paul@3 | 493 | |
paul@7 | 494 | uint32_t UART_IPC_PRI(int uart, uint8_t pri, uint8_t sub) |
paul@3 | 495 | { |
paul@7 | 496 | return PRI(pri, sub) << (uart == 1 ? UART1IPCBASE : UART2IPCBASE); |
paul@3 | 497 | } |
paul@3 | 498 | |
paul@3 | 499 | /* Return the UART interrupt priorities register. */ |
paul@3 | 500 | |
paul@7 | 501 | uint32_t UART_IPC_REG(int uart) |
paul@3 | 502 | { |
paul@7 | 503 | return uart == 1 ? UART1IPC : UART2IPC; |
paul@3 | 504 | } |
paul@3 | 505 | |
paul@7 | 506 | /* Return the UART interrupt flags for combining with a register. */ |
paul@3 | 507 | |
paul@7 | 508 | int UART_INT_FLAGS(int uart, uint8_t flags) |
paul@3 | 509 | { |
paul@7 | 510 | return (flags & 0b111) << (UARTINTBASE + (uart - UARTMIN) * UARTINTSTEP); |
paul@3 | 511 | } |