From dbee267868ee52517dd465aee0078619dc68f584 Mon Sep 17 00:00:00 2001 From: barthess Date: Tue, 6 Dec 2011 09:08:26 +0000 Subject: I2C. Added support of stm32f1x. git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/i2c_dev@3557 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/hal/platforms/STM32/i2c_lld.h | 176 ++++++++++++++++++++++++++++-- os/hal/platforms/STM32F1xx/hal_lld_f103.h | 16 +++ 2 files changed, 183 insertions(+), 9 deletions(-) diff --git a/os/hal/platforms/STM32/i2c_lld.h b/os/hal/platforms/STM32/i2c_lld.h index 0e77dadb8..f57bead5f 100644 --- a/os/hal/platforms/STM32/i2c_lld.h +++ b/os/hal/platforms/STM32/i2c_lld.h @@ -46,28 +46,28 @@ /** * @brief I2C1 driver enable switch. * @details If set to @p TRUE the support for I2C1 is included. - * @note The default is @p TRUE. + * @note The default is @p FALSE. */ #if !defined(STM32_I2C_USE_I2C1) || defined(__DOXYGEN__) -#define STM32_I2C_USE_I2C1 TRUE +#define STM32_I2C_USE_I2C1 FALSE #endif /** * @brief I2C2 driver enable switch. * @details If set to @p TRUE the support for I2C2 is included. - * @note The default is @p TRUE. + * @note The default is @p FALSE. */ #if !defined(STM32_I2C_USE_I2C2) || defined(__DOXYGEN__) -#define STM32_I2C_USE_I2C2 TRUE +#define STM32_I2C_USE_I2C2 FALSE #endif /** * @brief I2C3 driver enable switch. * @details If set to @p TRUE the support for I2C3 is included. - * @note The default is @p TRUE. + * @note The default is @p FALSE. */ #if !defined(STM32_I2C_USE_I2C3) || defined(__DOXYGEN__) -#define STM32_I2C_USE_I2C3 TRUE +#define STM32_I2C_USE_I2C3 FALSE #endif /** @@ -93,21 +93,179 @@ #if !defined(STM32_I2C_I2C3_IRQ_PRIORITY) || defined(__DOXYGEN__) #define STM32_I2C_I2C3_IRQ_PRIORITY 0xA0 #endif + +/** + * @brief I2C1 DMA error hook. + * @note The default action for DMA errors is a system halt because DMA + * error can only happen because programming errors. + */ +#if !defined(STM32_I2C_DMA_ERROR_HOOK) || defined(__DOXYGEN__) +#define STM32_I2C_DMA_ERROR_HOOK(uartp) chSysHalt() +#endif + +#if STM32_ADVANCED_DMA || defined(__DOXYGEN__) + +/** + * @brief DMA stream used for I2C1 RX operations. + * @note This option is only available on platforms with enhanced DMA. + */ +#if !defined(STM32_I2C_I2C1_RX_DMA_STREAM) || defined(__DOXYGEN__) +#define STM32_I2C_I2C1_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 0) +#endif + +/** + * @brief DMA stream used for I2C1 TX operations. + * @note This option is only available on platforms with enhanced DMA. + */ +#if !defined(STM32_I2C_I2C1_TX_DMA_STREAM) || defined(__DOXYGEN__) +#define STM32_I2C_I2C1_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 6) +#endif + +/** + * @brief DMA stream used for I2C2 RX operations. + * @note This option is only available on platforms with enhanced DMA. + */ +#if !defined(STM32_I2C_I2C2_RX_DMA_STREAM) || defined(__DOXYGEN__) +#define STM32_I2C_I2C2_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 2) +#endif + +/** + * @brief DMA stream used for I2C2 TX operations. + * @note This option is only available on platforms with enhanced DMA. + */ +#if !defined(STM32_I2C_I2C2_TX_DMA_STREAM) || defined(__DOXYGEN__) +#define STM32_I2C_I2C2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7) +#endif + +/** + * @brief DMA stream used for I2C3 RX operations. + * @note This option is only available on platforms with enhanced DMA. + */ +#if !defined(STM32_I2C_I2C3_RX_DMA_STREAM) || defined(__DOXYGEN__) +#define STM32_I2C_I2C3_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 2) +#endif + +/** + * @brief DMA stream used for I2C3 TX operations. + * @note This option is only available on platforms with enhanced DMA. + */ +#if !defined(STM32_I2C_I2C3_TX_DMA_STREAM) || defined(__DOXYGEN__) +#define STM32_I2C_I2C3_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4) +#endif + +#else /* !STM32_ADVANCED_DMA */ + +/* Fixed streams for platforms using the old DMA peripheral, the values are + valid for both STM32F1xx and STM32L1xx.*/ +#define STM32_I2C_I2C1_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7) +#define STM32_I2C_I2C1_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 6) +#define STM32_I2C_I2C2_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 5) +#define STM32_I2C_I2C2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4) + +#endif /* !STM32_ADVANCED_DMA*/ /** @} */ /*===========================================================================*/ /* Derived constants and error checks. */ /*===========================================================================*/ -/** @brief EV5 */ +/** @brief flags for interrupt handling */ #define I2C_EV5_MASTER_MODE_SELECT ((uint32_t)(((I2C_SR2_MSL | I2C_SR2_BUSY) << 16) | I2C_SR1_SB)) /* BUSY, MSL and SB flag */ #define I2C_EV8_2_MASTER_BYTE_TRANSMITTED ((uint32_t)(((I2C_SR2_MSL | I2C_SR2_BUSY | I2C_SR2_TRA) << 16) | I2C_SR1_BTF | I2C_SR1_TXE)) /* TRA, BUSY, MSL, TXE and BTF flags */ #define I2C_EV_MASK 0x00FFFFFF /* First byte zeroed because there is no need of PEC register part from SR2 */ -#define I2C_FLG_MASTER_RECEIVER 0x10 -#define I2C_FLG_HEADER_SENT 0x80 +#define I2C_FLG_MASTER_RECEIVER 0x10 +#define I2C_FLG_HEADER_SENT 0x80 + +#if STM32_I2C_USE_I2C1 && !STM32_HAS_I2C1 +#error "I2C1 not present in the selected device" +#endif + +#if STM32_I2C_USE_I2C2 && !STM32_HAS_I2C2 +#error "I2C2 not present in the selected device" +#endif + +#if STM32_I2C_USE_I2C3 && !STM32_HAS_I2C3 +#error "I2C3 not present in the selected device" +#endif + +#if !STM32_I2C_USE_I2C1 && !STM32_I2C_USE_I2C2 && \ + !STM32_I2C_USE_I2C3 +#error "I2C driver activated but no I2C peripheral assigned" +#endif + + + + + + + + + + + + + +#if STM32_I2C_USE_I2C1 && \ + !STM32_DMA_IS_VALID_ID(STM32_I2C_I2C1_RX_DMA_STREAM, \ + STM32_I2C1_RX_DMA_MSK) +#error "invalid DMA stream associated to USART1 RX" +#endif + +#if STM32_I2C_USE_I2C1 && \ + !STM32_DMA_IS_VALID_ID(STM32_I2C_I2C1_TX_DMA_STREAM, \ + STM32_I2C1_TX_DMA_MSK) +#error "invalid DMA stream associated to USART1 TX" +#endif + +#if STM32_I2C_USE_I2C2 && \ + !STM32_DMA_IS_VALID_ID(STM32_I2C_I2C2_RX_DMA_STREAM, \ + STM32_I2C2_RX_DMA_MSK) +#error "invalid DMA stream associated to USART2 RX" +#endif + +#if STM32_I2C_USE_I2C2 && \ + !STM32_DMA_IS_VALID_ID(STM32_I2C_I2C2_TX_DMA_STREAM, \ + STM32_I2C2_TX_DMA_MSK) +#error "invalid DMA stream associated to USART2 TX" +#endif + +#if STM32_I2C_USE_I2C3 && \ + !STM32_DMA_IS_VALID_ID(STM32_I2C_I2C3_RX_DMA_STREAM, \ + STM32_I2C3_RX_DMA_MSK) +#error "invalid DMA stream associated to USART3 RX" +#endif + +#if STM32_I2C_USE_I2C3 && \ + !STM32_DMA_IS_VALID_ID(STM32_I2C_I2C3_TX_DMA_STREAM, \ + STM32_I2C3_TX_DMA_MSK) +#error "invalid DMA stream associated to USART3 TX" +#endif + + + + + + + + + + + + + + + + + + + +#if !defined(STM32_DMA_REQUIRED) +#define STM32_DMA_REQUIRED +#endif + /*===========================================================================*/ /* Driver data structures and types. */ /*===========================================================================*/ diff --git a/os/hal/platforms/STM32F1xx/hal_lld_f103.h b/os/hal/platforms/STM32F1xx/hal_lld_f103.h index 22d955c65..d251e6a5d 100644 --- a/os/hal/platforms/STM32F1xx/hal_lld_f103.h +++ b/os/hal/platforms/STM32F1xx/hal_lld_f103.h @@ -306,8 +306,24 @@ /* I2C attributes.*/ #define STM32_HAS_I2C1 TRUE +#define STM32_I2C1_RX_DMA_MSK (STM32_DMA_STREAM_ID_MSK(1, 7)) +#define STM32_I2C1_RX_DMA_CHN 0x00000000 +#define STM32_I2C1_TX_DMA_MSK (STM32_DMA_STREAM_ID_MSK(1, 6)) +#define STM32_I2C1_TX_DMA_CHN 0x00000000 + #define STM32_HAS_I2C2 TRUE +#define STM32_I2C2_RX_DMA_MSK (STM32_DMA_STREAM_ID_MSK(1, 5)) +#define STM32_I2C2_RX_DMA_CHN 0x00000000 +#define STM32_I2C2_TX_DMA_MSK (STM32_DMA_STREAM_ID_MSK(1, 4)) +#define STM32_I2C2_TX_DMA_CHN 0x00000000 + #define STM32_HAS_I2C3 FALSE +#define STM32_I2C3_RX_DMA_MSK 0 +#define STM32_I2C3_RX_DMA_CHN 0x00000000 +#define STM32_I2C3_TX_DMA_MSK 0 +#define STM32_I2C3_TX_DMA_CHN 0x00000000 + + /* RTC attributes.*/ #define STM32_HAS_RTC TRUE -- cgit v1.2.3