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   1 /*
   2  * Copyright © 2011 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 /*
  19  * CC1111 definitions and code fragments for AltOS
  20  */
  21
  22 #ifndef _AO_ARCH_H_
  23 #define _AO_ARCH_H_
  24
  25 #include "cc1111.h"
  26
  27 /* Convert a __data pointer into an __xdata pointer */
  28 #define DATA_TO_XDATA(a)        ((void __xdata *) ((uint8_t) (a) | 0xff00))
  29
  30 /* Code and xdata use the same address space */
  31 #define CODE_TO_XDATA(a)        ((__xdata void *) ((uint16_t) (a)))
  32
  33 /* Pdata lives at the start of xdata */
  34 #define PDATA_TO_XDATA(a)       ((void __xdata *) ((uint8_t) (a) | 0xf000))
  35
  36 /* Stack runs from above the allocated __data space to 0xfe, which avoids
  37  * writing to 0xff as that triggers the stack overflow indicator
  38  */
  39 #define AO_STACK_START  0x90
  40 #define AO_STACK_END    0xfe
  41 #define AO_STACK_SIZE   (AO_STACK_END - AO_STACK_START + 1)
  42
  43 #define ao_arch_reboot() do {                                   \
  44         WDCTL = WDCTL_EN | WDCTL_MODE_WATCHDOG | WDCTL_INT_64;  \
  45         ao_delay(AO_SEC_TO_TICKS(2));                           \
  46         } while (0)
  47
  48 #define ao_arch_nop()   __asm nop __endasm
  49 #define ao_arch_interrupt(n)    __interrupt n
  50
  51 #define ao_arch_naked_declare   __naked
  52 #define ao_arch_naked_define    __naked
  53
  54 /* CC1111-specific drivers */
  55
  56 /*
  57  * ao_romconfig.c
  58  */
  59
  60 #define AO_ROMCONFIG_VERSION    2
  61
  62 #define AO_ROMCONFIG_SYMBOL(a) __code __at(a)
  63
  64 extern AO_ROMCONFIG_SYMBOL(0x00a0) uint16_t ao_romconfig_version;
  65 extern AO_ROMCONFIG_SYMBOL(0x00a2) uint16_t ao_romconfig_check;
  66 extern AO_ROMCONFIG_SYMBOL(0x00a4) uint16_t ao_serial_number;
  67 extern AO_ROMCONFIG_SYMBOL(0x00a6) uint32_t ao_radio_cal;
  68
  69 #ifndef HAS_USB
  70 #error Please define HAS_USB
  71 #endif
  72
  73 #define ao_arch_task_members\
  74         uint8_t stack_count;            /* amount of saved stack */
  75
  76 /* Initialize stack */
  77 #define ao_arch_init_stack(task, start) {                       \
  78         uint8_t __xdata *stack = task->stack;                   \
  79         uint8_t t;                                              \
  80         *stack++ = ((uint16_t) start);          /* 0 */         \
  81         *stack++ = ((uint16_t) start) >> 8;     /* 1 */         \
  82                                                                 \
  83         /* and the stuff saved by ao_switch */                  \
  84         *stack++ = 0;                           /* 2 acc */     \
  85         *stack++ = 0x80;                        /* 3 IE */      \
  86                                                                 \
  87         /*  4 DPL                                               \
  88          *  5 DPH                                               \
  89          *  6 B                                                 \
  90          *  7 R2                                                \
  91          *  8 R3                                                \
  92          *  9 R4                                                \
  93          * 10 R5                                                \
  94          * 11 R6                                                \
  95          * 12 R7                                                \
  96          * 13 R0                                                \
  97          * 14 R1                                                \
  98          * 15 PSW                                               \
  99          * 16 BP                                                \
 100          */                                                     \
 101         for (t = 0; t < 13; t++)                                \
 102                 *stack++ = 0;                                   \
 103         task->stack_count = 17;                                 \
 104         }
 105
 106
 107
 108 /* Save current context */
 109
 110 #define ao_arch_save_regs()                                             \
 111         __asm                                                           \
 112         /* Push ACC first, as when restoring the context it must be restored \
 113          * last (it is used to set the IE register). */                 \
 114         push    ACC                                                     \
 115         push    _IEN0                                                   \
 116         push    DPL                                                     \
 117         push    DPH                                                     \
 118         push    b                                                       \
 119         push    ar2                                                     \
 120         push    ar3                                                     \
 121         push    ar4                                                     \
 122         push    ar5                                                     \
 123         push    ar6                                                     \
 124         push    ar7                                                     \
 125         push    ar0                                                     \
 126         push    ar1                                                     \
 127         push    PSW                                                     \
 128         __endasm;                                                       \
 129         PSW = 0;                                                        \
 130         __asm                                                           \
 131         push    _bp                                                     \
 132         __endasm
 133
 134 #define ao_arch_save_stack() {                                          \
 135                 uint8_t stack_len;                                      \
 136                 __data uint8_t *stack_ptr;                              \
 137                 __xdata uint8_t *save_ptr;                              \
 138                 /* Save the current stack */                            \
 139                 stack_len = SP - (AO_STACK_START - 1);                  \
 140                 ao_cur_task->stack_count = stack_len;                   \
 141                 stack_ptr = (uint8_t __data *) AO_STACK_START;          \
 142                 save_ptr = (uint8_t __xdata *) ao_cur_task->stack;      \
 143                 do                                                      \
 144                         *save_ptr++ = *stack_ptr++;                     \
 145                 while (--stack_len);                                    \
 146         }
 147
 148 /* Empty the stack; might as well let interrupts have the whole thing */
 149 #define ao_arch_isr_stack()             (SP = AO_STACK_START - 1)
 150
 151 #define ao_arch_block_interrupts()      __asm clr _EA __endasm
 152 #define ao_arch_release_interrupts()    __asm setb _EA __endasm
 153
 154 /* Idle the CPU, waking when an interrupt occurs */
 155 #define ao_arch_wait_interrupt() do {           \
 156                 ao_arch_release_interrupts();   \
 157                 (PCON = PCON_IDLE);             \
 158                 ao_arch_block_interrupts();     \
 159         } while (0)
 160
 161 #define ao_arch_restore_stack() {                                       \
 162                 uint8_t stack_len;                                      \
 163                 __data uint8_t *stack_ptr;                              \
 164                 __xdata uint8_t *save_ptr;                              \
 165                                                                         \
 166                 /* Restore the old stack */                             \
 167                 stack_len = ao_cur_task->stack_count;                   \
 168                 SP = AO_STACK_START - 1 + stack_len;                    \
 169                                                                         \
 170                 stack_ptr = (uint8_t __data *) AO_STACK_START;          \
 171                 save_ptr = (uint8_t __xdata *) ao_cur_task->stack;      \
 172                 do                                                      \
 173                         *stack_ptr++ = *save_ptr++;                     \
 174                 while (--stack_len);                                    \
 175                                                                         \
 176                 __asm                                                   \
 177                 pop             _bp                                     \
 178                 pop             PSW                                     \
 179                 pop             ar1                                     \
 180                 pop             ar0                                     \
 181                 pop             ar7                                     \
 182                 pop             ar6                                     \
 183                 pop             ar5                                     \
 184                 pop             ar4                                     \
 185                 pop             ar3                                     \
 186                 pop             ar2                                     \
 187                 pop             b                                       \
 188                 pop             DPH                                     \
 189                 pop             DPL                                     \
 190                 /* The next byte of the stack is the IE register.  Only the global \
 191                    enable bit forms part of the task context.  Pop off the IE then set \
 192                    the global enable bit to match that of the stored IE register. */ \
 193                 pop             ACC                                     \
 194                 JB              ACC.7,0098$                             \
 195                 CLR             _EA                                     \
 196                 LJMP    0099$                                           \
 197                 0098$:                                                  \
 198                         SETB            _EA                             \
 199                 0099$:                                                  \
 200                 /* Finally restore ACC, which was the first register saved. */ \
 201                 pop             ACC                                     \
 202                 ret                                                     \
 203                 __endasm;                                               \
 204 }
 205
 206 #define ao_arch_critical(b) __critical { b }
 207
 208 #define AO_DATA_RING    32
 209
 210 /* ao_button.c */
 211 #ifdef HAS_BUTTON
 212 void
 213 ao_p0_isr(void) ao_arch_interrupt(13);
 214
 215 void
 216 ao_p1_isr(void) ao_arch_interrupt(15);
 217
 218 void
 219 ao_p2_isr(void);
 220
 221 #define HAS_P2_ISR      1
 222
 223 #endif
 224
 225 void
 226 ao_button_init(void);
 227
 228 char
 229 ao_button_get(void) __critical;
 230
 231 void
 232 ao_button_clear(void) __critical;
 233
 234 /* ao_string.c */
 235
 236 void
 237 _ao_xmemcpy(__xdata void *dst, __xdata void *src, uint16_t count);
 238
 239 #define ao_xmemcpy(d,s,c) _ao_xmemcpy(d,s,c)
 240
 241 void
 242 _ao_xmemset(__xdata void *dst, uint8_t value, uint16_t count);
 243
 244 #define ao_xmemset(d,v,c) _ao_xmemset(d,v,c)
 245
 246 int8_t
 247 _ao_xmemcmp(__xdata void *a, __xdata void *b, uint16_t count);
 248
 249 #define ao_xmemcmp(d,s,c) _ao_xmemcmp((d), (s), (c))
 250
 251 struct ao_serial_speed {
 252         uint8_t baud;
 253         uint8_t gcr;
 254 };
 255
 256 extern const __code struct ao_serial_speed ao_serial_speeds[];
 257
 258 /*
 259  * ao_dma.c
 260  */
 261
 262 /* Allocate a DMA channel. the 'done' parameter will be set when the
 263  * dma is finished and will be used to wakeup any waiters
 264  */
 265
 266 uint8_t
 267 ao_dma_alloc(__xdata uint8_t * done);
 268
 269 /* Setup a DMA channel */
 270 void
 271 ao_dma_set_transfer(uint8_t id,
 272                     void __xdata *srcaddr,
 273                     void __xdata *dstaddr,
 274                     uint16_t count,
 275                     uint8_t cfg0,
 276                     uint8_t cfg1);
 277
 278 /* Start a DMA channel */
 279 void
 280 ao_dma_start(uint8_t id);
 281
 282 /* Manually trigger a DMA channel */
 283 void
 284 ao_dma_trigger(uint8_t id);
 285
 286 /* Abort a running DMA transfer */
 287 void
 288 ao_dma_abort(uint8_t id);
 289
 290 /* DMA interrupt routine */
 291 void
 292 ao_dma_isr(void) ao_arch_interrupt(8);
 293
 294 /* ao_adc.c */
 295
 296 #if HAS_ADC
 297 /* The A/D interrupt handler */
 298 void
 299 ao_adc_isr(void) ao_arch_interrupt(1);
 300 #endif
 301
 302 #if HAS_USB
 303 /* USB interrupt handler */
 304 void
 305 ao_usb_isr(void) ao_arch_interrupt(6);
 306 #endif
 307
 308 #if HAS_SERIAL_0
 309 void
 310 ao_serial0_rx_isr(void) ao_arch_interrupt(2);
 311
 312 void
 313 ao_serial0_tx_isr(void) ao_arch_interrupt(7);
 314 #endif
 315
 316 #if HAS_SERIAL_1
 317 void
 318 ao_serial1_rx_isr(void) ao_arch_interrupt(3);
 319
 320 void
 321 ao_serial1_tx_isr(void) ao_arch_interrupt(14);
 322 #endif
 323
 324 #if HAS_EXTI_0
 325 void
 326 ao_p0_isr(void) __interrupt(13);
 327 #endif
 328
 329 #define AO_ADC_MAX      32767
 330
 331 #endif /* _AO_ARCH_H_ */