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Diffstat (limited to 'src/stm/ao_arch.h')
| -rw-r--r-- | src/stm/ao_arch.h | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/stm/ao_arch.h b/src/stm/ao_arch.h new file mode 100644 index 00000000..87eda18b --- /dev/null +++ b/src/stm/ao_arch.h @@ -0,0 +1,254 @@ +/* + * Copyright © 2012 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#ifndef _AO_ARCH_H_ +#define _AO_ARCH_H_ + +#include <stdio.h> +#include <stm32l.h> + +/* + * STM32L definitions and code fragments for AltOS + */ + +#define AO_STACK_SIZE 512 + +#define AO_LED_TYPE uint16_t + +#ifndef AO_TICK_TYPE +#define AO_TICK_TYPE uint16_t +#define AO_TICK_SIGNED int16_t +#endif + +/* Various definitions to make GCC look more like SDCC */ + +#define ao_arch_naked_declare __attribute__((naked)) +#define ao_arch_naked_define +#define __pdata +#define __data +#define __xdata +#define __code const +#define __reentrant +#define __critical +#define __interrupt(n) +#define __at(n) + +#define CORTEX_M3_AIRCR ((uint32_t *) 0xe000ed0c) + +#define ao_arch_reboot() (*((uint32_t *) 0xe000ed0c) = 0x05fa0004) + +#define ao_arch_nop() asm("nop") + +#define ao_arch_interrupt(n) /* nothing */ + +#undef putchar +#undef getchar +#define putchar(c) ao_putchar(c) +#define getchar ao_getchar + +extern void putchar(char c); +extern char getchar(void); +extern void ao_avr_stdio_init(void); + + +/* + * ao_romconfig.c + */ + +#define AO_ROMCONFIG_VERSION 2 + +#define AO_ROMCONFIG_SYMBOL(a) __attribute__((section(".romconfig"))) const + +extern const uint16_t ao_romconfig_version; +extern const uint16_t ao_romconfig_check; +extern const uint16_t ao_serial_number; +extern const uint32_t ao_radio_cal; + +#define ARM_PUSH32(stack, val) (*(--(stack)) = (val)) + +#define ao_arch_task_members\ + uint32_t *sp; /* saved stack pointer */ + +#define cli() asm("cpsid i") +#define sei() asm("cpsie i") + +#define ao_arch_init_stack(task, start) do { \ + uint32_t *sp = (uint32_t *) (task->stack + AO_STACK_SIZE); \ + uint32_t a = (uint32_t) start; \ + int i; \ + \ + /* Return address (goes into LR) */ \ + ARM_PUSH32(sp, a); \ + \ + /* Clear register values r0-r12 */ \ + i = 13; \ + while (i--) \ + ARM_PUSH32(sp, 0); \ + \ + /* APSR */ \ + ARM_PUSH32(sp, 0); \ + \ + /* PRIMASK with interrupts enabled */ \ + ARM_PUSH32(sp, 0); \ + \ + task->sp = sp; \ +} while (0); + +#define ao_arch_save_regs() do { \ + /* Save general registers */ \ + asm("push {r0-r12,lr}\n"); \ + \ + /* Save APSR */ \ + asm("mrs r0,apsr"); \ + asm("push {r0}"); \ + \ + /* Save PRIMASK */ \ + asm("mrs r0,primask"); \ + asm("push {r0}"); \ + \ + /* Enable interrupts */ \ + sei(); \ + } while (0) + +#define ao_arch_save_stack() do { \ + uint32_t *sp; \ + asm("mov %0,sp" : "=&r" (sp) ); \ + ao_cur_task->sp = (sp); \ + if ((uint8_t *) sp < &ao_cur_task->stack[0]) \ + ao_panic (AO_PANIC_STACK); \ + } while (0) + +#if 0 +#define ao_arch_isr_stack() do { \ + uint32_t *sp = (uint32_t *) 0x20004000; \ + asm("mov %0,sp" : "=&r" (sp) ); \ + } while (0) +#else +#define ao_arch_isr_stack() +#endif + + +#define ao_arch_cpu_idle() do { \ + asm("wfi"); \ + } while (0) + +#define ao_arch_restore_stack() do { \ + uint32_t sp; \ + sp = (uint32_t) ao_cur_task->sp; \ + \ + /* Switch stacks */ \ + asm("mov sp, %0" : : "r" (sp) ); \ + \ + /* Restore PRIMASK */ \ + asm("pop {r0}"); \ + asm("msr primask,r0"); \ + \ + /* Restore APSR */ \ + asm("pop {r0}"); \ + asm("msr apsr,r0"); \ + \ + /* Restore general registers */ \ + asm("pop {r0-r12,lr}\n"); \ + \ + /* Return to calling function */ \ + asm("bx lr"); \ + } while(0) + +#define ao_arch_critical(b) do { cli(); do { b } while (0); sei(); } while (0) + +/* + * For now, we're running at a weird frequency + */ + +#if AO_HSE +#define AO_PLLSRC AO_HSE +#else +#define AO_PLLSRC STM_HSI_FREQ +#endif + +#define AO_PLLVCO (AO_PLLSRC * AO_PLLMUL) +#define AO_SYSCLK (AO_PLLVCO / AO_PLLDIV) +#define AO_HCLK (AO_SYSCLK / AO_AHB_PRESCALER) +#define AO_PCLK1 (AO_HCLK / AO_APB1_PRESCALER) +#define AO_PCLK2 (AO_HCLK / AO_APB2_PRESCALER) + +#if AO_APB1_PRESCALER == 1 +#define AO_TIM23467_CLK AO_PCLK1 +#else +#define AO_TIM23467_CLK (2 * AO_PCLK1) +#endif + +#if AO_APB2_PRESCALER == 1 +#define AO_TIM91011_CLK AO_PCLK2 +#else +#define AO_TIM91011_CLK (2 * AO_PCLK2) +#endif + +#define AO_STM_NVIC_HIGH_PRIORITY 4 +#define AO_STM_NVIC_CLOCK_PRIORITY 6 +#define AO_STM_NVIC_MED_PRIORITY 8 +#define AO_STM_NVIC_LOW_PRIORITY 10 + +void ao_lcd_stm_init(void); + +void ao_lcd_font_init(void); + +void ao_lcd_font_string(char *s); + +char +ao_serial1_getchar(void); + +void +ao_serial1_putchar(char c); + +char +ao_serial1_pollchar(void); + +void +ao_serial1_set_speed(uint8_t speed); + +char +ao_serial2_getchar(void); + +void +ao_serial2_putchar(char c); + +char +ao_serial2_pollchar(void); + +void +ao_serial2_set_speed(uint8_t speed); + +char +ao_serial3_getchar(void); + +void +ao_serial3_putchar(char c); + +char +ao_serial3_pollchar(void); + +void +ao_serial3_set_speed(uint8_t speed); + +extern const uint32_t ao_radio_cal; + +void +ao_adc_init(); + +#endif /* _AO_ARCH_H_ */ + |