X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fstmf0%2Fao_arch_funcs.h;h=8b6234c4e995709da15b1df949b1daf4fc7122fb;hp=2f2f8f43f440b07e631ded508b6b66ca872bec39;hb=1667cb8e8b702b05fc3ec39ee49029885df64a4a;hpb=02f03df6d089cafae99f8ce15dcbd87f6e78d749 diff --git a/src/stmf0/ao_arch_funcs.h b/src/stmf0/ao_arch_funcs.h index 2f2f8f43..8b6234c4 100644 --- a/src/stmf0/ao_arch_funcs.h +++ b/src/stmf0/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 @@ -18,25 +19,27 @@ #ifndef _AO_ARCH_FUNCS_H_ #define _AO_ARCH_FUNCS_H_ +#include + /* ao_spi_stm.c */ -/* PCLK is set to 16MHz (HCLK 32MHz, APB prescaler 2) */ +/* PCLK is set to 48MHz (HCLK 48MHz, HPRE 1, PPRE 1) */ -#define AO_SPI_SPEED_8MHz STM_SPI_CR1_BR_PCLK_2 -#define AO_SPI_SPEED_4MHz STM_SPI_CR1_BR_PCLK_4 -#define AO_SPI_SPEED_2MHz STM_SPI_CR1_BR_PCLK_8 -#define AO_SPI_SPEED_1MHz STM_SPI_CR1_BR_PCLK_16 -#define AO_SPI_SPEED_500kHz STM_SPI_CR1_BR_PCLK_32 -#define AO_SPI_SPEED_250kHz STM_SPI_CR1_BR_PCLK_64 -#define AO_SPI_SPEED_125kHz STM_SPI_CR1_BR_PCLK_128 -#define AO_SPI_SPEED_62500Hz STM_SPI_CR1_BR_PCLK_256 +#define AO_SPI_SPEED_24MHz STM_SPI_CR1_BR_PCLK_2 +#define AO_SPI_SPEED_12MHz STM_SPI_CR1_BR_PCLK_4 +#define AO_SPI_SPEED_6MHz STM_SPI_CR1_BR_PCLK_8 +#define AO_SPI_SPEED_3MHz STM_SPI_CR1_BR_PCLK_16 +#define AO_SPI_SPEED_1500kHz STM_SPI_CR1_BR_PCLK_32 +#define AO_SPI_SPEED_750kHz STM_SPI_CR1_BR_PCLK_64 +#define AO_SPI_SPEED_375kHz STM_SPI_CR1_BR_PCLK_128 +#define AO_SPI_SPEED_187500Hz STM_SPI_CR1_BR_PCLK_256 -#define AO_SPI_SPEED_FAST AO_SPI_SPEED_8MHz +#define AO_SPI_SPEED_FAST AO_SPI_SPEED_24MHz /* Companion bus wants something no faster than 200kHz */ -#define AO_SPI_SPEED_200kHz AO_SPI_SPEED_125kHz +#define AO_SPI_SPEED_200kHz AO_SPI_SPEED_187500Hz #define AO_SPI_CONFIG_1 0x00 #define AO_SPI_1_CONFIG_PA5_PA6_PA7 AO_SPI_CONFIG_1 @@ -80,7 +83,57 @@ 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) +{ + 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 = byte; + while (!(stm_spi->sr & (1 << STM_SPI_SR_RXNE))) + ; + (void) stm_spi->dr; +} + +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); @@ -118,32 +171,44 @@ ao_spi_try_get_mask(struct stm_gpio *reg, uint16_t mask, uint8_t bus, uint32_t s #define ao_spi_get_bit(reg,bit,pin,bus,speed) ao_spi_get_mask(reg,(1<