X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fstm%2Fao_arch_funcs.h;h=a9d0fa34f02fed0ab58159eb6f7293f059a00a16;hb=89ecc32b90565ace078c4a84d4406a4d1f86821a;hp=25b435879b3fbab71e5625b3a2ddebaaf2586fca;hpb=0dec7d0885970a7d73468dd77220bae78e161b40;p=fw%2Faltos diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h index 25b43587..a9d0fa34 100644 --- a/src/stm/ao_arch_funcs.h +++ b/src/stm/ao_arch_funcs.h @@ -3,7 +3,8 @@ * * 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. + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of @@ -80,7 +81,13 @@ void ao_spi_send_fixed(uint8_t value, uint16_t len, uint8_t spi_index); void -ao_spi_send_sync(void *block, uint16_t len, uint8_t spi_index); +ao_spi_send_sync(const void *block, uint16_t len, uint8_t spi_index); + +void +ao_spi_start_bytes(uint8_t spi_index); + +void +ao_spi_stop_bytes(uint8_t spi_index); static inline void ao_spi_send_byte(uint8_t byte, uint8_t spi_index) @@ -96,25 +103,41 @@ ao_spi_send_byte(uint8_t byte, uint8_t spi_index) break; } - stm_spi->cr2 = ((0 << STM_SPI_CR2_TXEIE) | - (0 << STM_SPI_CR2_RXNEIE) | - (0 << STM_SPI_CR2_ERRIE) | - (0 << STM_SPI_CR2_SSOE) | - (0 << STM_SPI_CR2_TXDMAEN) | - (0 << STM_SPI_CR2_RXDMAEN)); - - /* Clear RXNE */ + while (!(stm_spi->sr & (1 << STM_SPI_SR_TXE))) + ; + stm_spi->dr = byte; + while (!(stm_spi->sr & (1 << STM_SPI_SR_RXNE))) + ; (void) stm_spi->dr; +} - while (!(stm_spi->sr & (1 << STM_SPI_SR_TXE))); - stm_spi->dr = byte; +static inline uint8_t +ao_spi_recv_byte(uint8_t spi_index) +{ + struct stm_spi *stm_spi; + + switch (AO_SPI_INDEX(spi_index)) { + case 0: + stm_spi = &stm_spi1; + break; + case 1: + stm_spi = &stm_spi2; + break; + } + + while (!(stm_spi->sr & (1 << STM_SPI_SR_TXE))) + ; + stm_spi->dr = 0xff; + while (!(stm_spi->sr & (1 << STM_SPI_SR_RXNE))) + ; + return stm_spi->dr; } void ao_spi_recv(void *block, uint16_t len, uint8_t spi_index); void -ao_spi_duplex(void *out, void *in, uint16_t len, uint8_t spi_index); +ao_spi_duplex(const void *out, void *in, uint16_t len, uint8_t spi_index); extern uint16_t ao_spi_speed[STM_NUM_SPI]; @@ -352,7 +375,7 @@ ao_arch_irq_check(void) { static inline void ao_arch_init_stack(struct ao_task *task, void *start) { - uint32_t *sp = (uint32_t *) (task->stack + AO_STACK_SIZE); + uint32_t *sp = (uint32_t *) ((void*) task->stack + AO_STACK_SIZE); uint32_t a = (uint32_t) start; int i; @@ -390,16 +413,11 @@ static inline void ao_arch_save_stack(void) { 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); } static inline void ao_arch_restore_stack(void) { - uint32_t sp; - sp = (uint32_t) ao_cur_task->sp; - /* Switch stacks */ - asm("mov sp, %0" : : "r" (sp) ); + asm("mov sp, %0" : : "r" (ao_cur_task->sp) ); /* Restore PRIMASK */ asm("pop {r0}");