mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_NUCLEO_F103RB/stm32f10x_can.c@52:a51c77007319, 2013-12-02 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Dec 02 11:30:05 2013 +0000
- Revision:
- 52:a51c77007319
- Child:
- 70:c1fbde68b492
Synchronized with git revision 49df530ae72ce97ccc773d1f2c13b38e868e6abd
Full URL: https://github.com/mbedmicro/mbed/commit/49df530ae72ce97ccc773d1f2c13b38e868e6abd/
Add STMicroelectronics NUCLEO_F103RB target
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 52:a51c77007319 | 1 | /** |
mbed_official | 52:a51c77007319 | 2 | ****************************************************************************** |
mbed_official | 52:a51c77007319 | 3 | * @file stm32f10x_can.c |
mbed_official | 52:a51c77007319 | 4 | * @author MCD Application Team |
mbed_official | 52:a51c77007319 | 5 | * @version V3.5.0 |
mbed_official | 52:a51c77007319 | 6 | * @date 11-March-2011 |
mbed_official | 52:a51c77007319 | 7 | * @brief This file provides all the CAN firmware functions. |
mbed_official | 52:a51c77007319 | 8 | ****************************************************************************** |
mbed_official | 52:a51c77007319 | 9 | * @attention |
mbed_official | 52:a51c77007319 | 10 | * |
mbed_official | 52:a51c77007319 | 11 | * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
mbed_official | 52:a51c77007319 | 12 | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE |
mbed_official | 52:a51c77007319 | 13 | * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY |
mbed_official | 52:a51c77007319 | 14 | * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING |
mbed_official | 52:a51c77007319 | 15 | * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE |
mbed_official | 52:a51c77007319 | 16 | * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
mbed_official | 52:a51c77007319 | 17 | * |
mbed_official | 52:a51c77007319 | 18 | * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> |
mbed_official | 52:a51c77007319 | 19 | ****************************************************************************** |
mbed_official | 52:a51c77007319 | 20 | */ |
mbed_official | 52:a51c77007319 | 21 | |
mbed_official | 52:a51c77007319 | 22 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 52:a51c77007319 | 23 | #include "stm32f10x_can.h" |
mbed_official | 52:a51c77007319 | 24 | #include "stm32f10x_rcc.h" |
mbed_official | 52:a51c77007319 | 25 | |
mbed_official | 52:a51c77007319 | 26 | /** @addtogroup STM32F10x_StdPeriph_Driver |
mbed_official | 52:a51c77007319 | 27 | * @{ |
mbed_official | 52:a51c77007319 | 28 | */ |
mbed_official | 52:a51c77007319 | 29 | |
mbed_official | 52:a51c77007319 | 30 | /** @defgroup CAN |
mbed_official | 52:a51c77007319 | 31 | * @brief CAN driver modules |
mbed_official | 52:a51c77007319 | 32 | * @{ |
mbed_official | 52:a51c77007319 | 33 | */ |
mbed_official | 52:a51c77007319 | 34 | |
mbed_official | 52:a51c77007319 | 35 | /** @defgroup CAN_Private_TypesDefinitions |
mbed_official | 52:a51c77007319 | 36 | * @{ |
mbed_official | 52:a51c77007319 | 37 | */ |
mbed_official | 52:a51c77007319 | 38 | |
mbed_official | 52:a51c77007319 | 39 | /** |
mbed_official | 52:a51c77007319 | 40 | * @} |
mbed_official | 52:a51c77007319 | 41 | */ |
mbed_official | 52:a51c77007319 | 42 | |
mbed_official | 52:a51c77007319 | 43 | /** @defgroup CAN_Private_Defines |
mbed_official | 52:a51c77007319 | 44 | * @{ |
mbed_official | 52:a51c77007319 | 45 | */ |
mbed_official | 52:a51c77007319 | 46 | |
mbed_official | 52:a51c77007319 | 47 | /* CAN Master Control Register bits */ |
mbed_official | 52:a51c77007319 | 48 | |
mbed_official | 52:a51c77007319 | 49 | #define MCR_DBF ((uint32_t)0x00010000) /* software master reset */ |
mbed_official | 52:a51c77007319 | 50 | |
mbed_official | 52:a51c77007319 | 51 | /* CAN Mailbox Transmit Request */ |
mbed_official | 52:a51c77007319 | 52 | #define TMIDxR_TXRQ ((uint32_t)0x00000001) /* Transmit mailbox request */ |
mbed_official | 52:a51c77007319 | 53 | |
mbed_official | 52:a51c77007319 | 54 | /* CAN Filter Master Register bits */ |
mbed_official | 52:a51c77007319 | 55 | #define FMR_FINIT ((uint32_t)0x00000001) /* Filter init mode */ |
mbed_official | 52:a51c77007319 | 56 | |
mbed_official | 52:a51c77007319 | 57 | /* Time out for INAK bit */ |
mbed_official | 52:a51c77007319 | 58 | #define INAK_TIMEOUT ((uint32_t)0x0000FFFF) |
mbed_official | 52:a51c77007319 | 59 | /* Time out for SLAK bit */ |
mbed_official | 52:a51c77007319 | 60 | #define SLAK_TIMEOUT ((uint32_t)0x0000FFFF) |
mbed_official | 52:a51c77007319 | 61 | |
mbed_official | 52:a51c77007319 | 62 | |
mbed_official | 52:a51c77007319 | 63 | |
mbed_official | 52:a51c77007319 | 64 | /* Flags in TSR register */ |
mbed_official | 52:a51c77007319 | 65 | #define CAN_FLAGS_TSR ((uint32_t)0x08000000) |
mbed_official | 52:a51c77007319 | 66 | /* Flags in RF1R register */ |
mbed_official | 52:a51c77007319 | 67 | #define CAN_FLAGS_RF1R ((uint32_t)0x04000000) |
mbed_official | 52:a51c77007319 | 68 | /* Flags in RF0R register */ |
mbed_official | 52:a51c77007319 | 69 | #define CAN_FLAGS_RF0R ((uint32_t)0x02000000) |
mbed_official | 52:a51c77007319 | 70 | /* Flags in MSR register */ |
mbed_official | 52:a51c77007319 | 71 | #define CAN_FLAGS_MSR ((uint32_t)0x01000000) |
mbed_official | 52:a51c77007319 | 72 | /* Flags in ESR register */ |
mbed_official | 52:a51c77007319 | 73 | #define CAN_FLAGS_ESR ((uint32_t)0x00F00000) |
mbed_official | 52:a51c77007319 | 74 | |
mbed_official | 52:a51c77007319 | 75 | /* Mailboxes definition */ |
mbed_official | 52:a51c77007319 | 76 | #define CAN_TXMAILBOX_0 ((uint8_t)0x00) |
mbed_official | 52:a51c77007319 | 77 | #define CAN_TXMAILBOX_1 ((uint8_t)0x01) |
mbed_official | 52:a51c77007319 | 78 | #define CAN_TXMAILBOX_2 ((uint8_t)0x02) |
mbed_official | 52:a51c77007319 | 79 | |
mbed_official | 52:a51c77007319 | 80 | |
mbed_official | 52:a51c77007319 | 81 | |
mbed_official | 52:a51c77007319 | 82 | #define CAN_MODE_MASK ((uint32_t) 0x00000003) |
mbed_official | 52:a51c77007319 | 83 | /** |
mbed_official | 52:a51c77007319 | 84 | * @} |
mbed_official | 52:a51c77007319 | 85 | */ |
mbed_official | 52:a51c77007319 | 86 | |
mbed_official | 52:a51c77007319 | 87 | /** @defgroup CAN_Private_Macros |
mbed_official | 52:a51c77007319 | 88 | * @{ |
mbed_official | 52:a51c77007319 | 89 | */ |
mbed_official | 52:a51c77007319 | 90 | |
mbed_official | 52:a51c77007319 | 91 | /** |
mbed_official | 52:a51c77007319 | 92 | * @} |
mbed_official | 52:a51c77007319 | 93 | */ |
mbed_official | 52:a51c77007319 | 94 | |
mbed_official | 52:a51c77007319 | 95 | /** @defgroup CAN_Private_Variables |
mbed_official | 52:a51c77007319 | 96 | * @{ |
mbed_official | 52:a51c77007319 | 97 | */ |
mbed_official | 52:a51c77007319 | 98 | |
mbed_official | 52:a51c77007319 | 99 | /** |
mbed_official | 52:a51c77007319 | 100 | * @} |
mbed_official | 52:a51c77007319 | 101 | */ |
mbed_official | 52:a51c77007319 | 102 | |
mbed_official | 52:a51c77007319 | 103 | /** @defgroup CAN_Private_FunctionPrototypes |
mbed_official | 52:a51c77007319 | 104 | * @{ |
mbed_official | 52:a51c77007319 | 105 | */ |
mbed_official | 52:a51c77007319 | 106 | |
mbed_official | 52:a51c77007319 | 107 | static ITStatus CheckITStatus(uint32_t CAN_Reg, uint32_t It_Bit); |
mbed_official | 52:a51c77007319 | 108 | |
mbed_official | 52:a51c77007319 | 109 | /** |
mbed_official | 52:a51c77007319 | 110 | * @} |
mbed_official | 52:a51c77007319 | 111 | */ |
mbed_official | 52:a51c77007319 | 112 | |
mbed_official | 52:a51c77007319 | 113 | /** @defgroup CAN_Private_Functions |
mbed_official | 52:a51c77007319 | 114 | * @{ |
mbed_official | 52:a51c77007319 | 115 | */ |
mbed_official | 52:a51c77007319 | 116 | |
mbed_official | 52:a51c77007319 | 117 | /** |
mbed_official | 52:a51c77007319 | 118 | * @brief Deinitializes the CAN peripheral registers to their default reset values. |
mbed_official | 52:a51c77007319 | 119 | * @param CANx: where x can be 1 or 2 to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 120 | * @retval None. |
mbed_official | 52:a51c77007319 | 121 | */ |
mbed_official | 52:a51c77007319 | 122 | void CAN_DeInit(CAN_TypeDef* CANx) |
mbed_official | 52:a51c77007319 | 123 | { |
mbed_official | 52:a51c77007319 | 124 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 125 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 126 | |
mbed_official | 52:a51c77007319 | 127 | if (CANx == CAN1) |
mbed_official | 52:a51c77007319 | 128 | { |
mbed_official | 52:a51c77007319 | 129 | /* Enable CAN1 reset state */ |
mbed_official | 52:a51c77007319 | 130 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_CAN1, ENABLE); |
mbed_official | 52:a51c77007319 | 131 | /* Release CAN1 from reset state */ |
mbed_official | 52:a51c77007319 | 132 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_CAN1, DISABLE); |
mbed_official | 52:a51c77007319 | 133 | } |
mbed_official | 52:a51c77007319 | 134 | else |
mbed_official | 52:a51c77007319 | 135 | { |
mbed_official | 52:a51c77007319 | 136 | /* Enable CAN2 reset state */ |
mbed_official | 52:a51c77007319 | 137 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_CAN2, ENABLE); |
mbed_official | 52:a51c77007319 | 138 | /* Release CAN2 from reset state */ |
mbed_official | 52:a51c77007319 | 139 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_CAN2, DISABLE); |
mbed_official | 52:a51c77007319 | 140 | } |
mbed_official | 52:a51c77007319 | 141 | } |
mbed_official | 52:a51c77007319 | 142 | |
mbed_official | 52:a51c77007319 | 143 | /** |
mbed_official | 52:a51c77007319 | 144 | * @brief Initializes the CAN peripheral according to the specified |
mbed_official | 52:a51c77007319 | 145 | * parameters in the CAN_InitStruct. |
mbed_official | 52:a51c77007319 | 146 | * @param CANx: where x can be 1 or 2 to to select the CAN |
mbed_official | 52:a51c77007319 | 147 | * peripheral. |
mbed_official | 52:a51c77007319 | 148 | * @param CAN_InitStruct: pointer to a CAN_InitTypeDef structure that |
mbed_official | 52:a51c77007319 | 149 | * contains the configuration information for the |
mbed_official | 52:a51c77007319 | 150 | * CAN peripheral. |
mbed_official | 52:a51c77007319 | 151 | * @retval Constant indicates initialization succeed which will be |
mbed_official | 52:a51c77007319 | 152 | * CAN_InitStatus_Failed or CAN_InitStatus_Success. |
mbed_official | 52:a51c77007319 | 153 | */ |
mbed_official | 52:a51c77007319 | 154 | uint8_t CAN_Init(CAN_TypeDef* CANx, CAN_InitTypeDef* CAN_InitStruct) |
mbed_official | 52:a51c77007319 | 155 | { |
mbed_official | 52:a51c77007319 | 156 | uint8_t InitStatus = CAN_InitStatus_Failed; |
mbed_official | 52:a51c77007319 | 157 | uint32_t wait_ack = 0x00000000; |
mbed_official | 52:a51c77007319 | 158 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 159 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 160 | assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_TTCM)); |
mbed_official | 52:a51c77007319 | 161 | assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_ABOM)); |
mbed_official | 52:a51c77007319 | 162 | assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_AWUM)); |
mbed_official | 52:a51c77007319 | 163 | assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_NART)); |
mbed_official | 52:a51c77007319 | 164 | assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_RFLM)); |
mbed_official | 52:a51c77007319 | 165 | assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_TXFP)); |
mbed_official | 52:a51c77007319 | 166 | assert_param(IS_CAN_MODE(CAN_InitStruct->CAN_Mode)); |
mbed_official | 52:a51c77007319 | 167 | assert_param(IS_CAN_SJW(CAN_InitStruct->CAN_SJW)); |
mbed_official | 52:a51c77007319 | 168 | assert_param(IS_CAN_BS1(CAN_InitStruct->CAN_BS1)); |
mbed_official | 52:a51c77007319 | 169 | assert_param(IS_CAN_BS2(CAN_InitStruct->CAN_BS2)); |
mbed_official | 52:a51c77007319 | 170 | assert_param(IS_CAN_PRESCALER(CAN_InitStruct->CAN_Prescaler)); |
mbed_official | 52:a51c77007319 | 171 | |
mbed_official | 52:a51c77007319 | 172 | /* Exit from sleep mode */ |
mbed_official | 52:a51c77007319 | 173 | CANx->MCR &= (~(uint32_t)CAN_MCR_SLEEP); |
mbed_official | 52:a51c77007319 | 174 | |
mbed_official | 52:a51c77007319 | 175 | /* Request initialisation */ |
mbed_official | 52:a51c77007319 | 176 | CANx->MCR |= CAN_MCR_INRQ ; |
mbed_official | 52:a51c77007319 | 177 | |
mbed_official | 52:a51c77007319 | 178 | /* Wait the acknowledge */ |
mbed_official | 52:a51c77007319 | 179 | while (((CANx->MSR & CAN_MSR_INAK) != CAN_MSR_INAK) && (wait_ack != INAK_TIMEOUT)) |
mbed_official | 52:a51c77007319 | 180 | { |
mbed_official | 52:a51c77007319 | 181 | wait_ack++; |
mbed_official | 52:a51c77007319 | 182 | } |
mbed_official | 52:a51c77007319 | 183 | |
mbed_official | 52:a51c77007319 | 184 | /* Check acknowledge */ |
mbed_official | 52:a51c77007319 | 185 | if ((CANx->MSR & CAN_MSR_INAK) != CAN_MSR_INAK) |
mbed_official | 52:a51c77007319 | 186 | { |
mbed_official | 52:a51c77007319 | 187 | InitStatus = CAN_InitStatus_Failed; |
mbed_official | 52:a51c77007319 | 188 | } |
mbed_official | 52:a51c77007319 | 189 | else |
mbed_official | 52:a51c77007319 | 190 | { |
mbed_official | 52:a51c77007319 | 191 | /* Set the time triggered communication mode */ |
mbed_official | 52:a51c77007319 | 192 | if (CAN_InitStruct->CAN_TTCM == ENABLE) |
mbed_official | 52:a51c77007319 | 193 | { |
mbed_official | 52:a51c77007319 | 194 | CANx->MCR |= CAN_MCR_TTCM; |
mbed_official | 52:a51c77007319 | 195 | } |
mbed_official | 52:a51c77007319 | 196 | else |
mbed_official | 52:a51c77007319 | 197 | { |
mbed_official | 52:a51c77007319 | 198 | CANx->MCR &= ~(uint32_t)CAN_MCR_TTCM; |
mbed_official | 52:a51c77007319 | 199 | } |
mbed_official | 52:a51c77007319 | 200 | |
mbed_official | 52:a51c77007319 | 201 | /* Set the automatic bus-off management */ |
mbed_official | 52:a51c77007319 | 202 | if (CAN_InitStruct->CAN_ABOM == ENABLE) |
mbed_official | 52:a51c77007319 | 203 | { |
mbed_official | 52:a51c77007319 | 204 | CANx->MCR |= CAN_MCR_ABOM; |
mbed_official | 52:a51c77007319 | 205 | } |
mbed_official | 52:a51c77007319 | 206 | else |
mbed_official | 52:a51c77007319 | 207 | { |
mbed_official | 52:a51c77007319 | 208 | CANx->MCR &= ~(uint32_t)CAN_MCR_ABOM; |
mbed_official | 52:a51c77007319 | 209 | } |
mbed_official | 52:a51c77007319 | 210 | |
mbed_official | 52:a51c77007319 | 211 | /* Set the automatic wake-up mode */ |
mbed_official | 52:a51c77007319 | 212 | if (CAN_InitStruct->CAN_AWUM == ENABLE) |
mbed_official | 52:a51c77007319 | 213 | { |
mbed_official | 52:a51c77007319 | 214 | CANx->MCR |= CAN_MCR_AWUM; |
mbed_official | 52:a51c77007319 | 215 | } |
mbed_official | 52:a51c77007319 | 216 | else |
mbed_official | 52:a51c77007319 | 217 | { |
mbed_official | 52:a51c77007319 | 218 | CANx->MCR &= ~(uint32_t)CAN_MCR_AWUM; |
mbed_official | 52:a51c77007319 | 219 | } |
mbed_official | 52:a51c77007319 | 220 | |
mbed_official | 52:a51c77007319 | 221 | /* Set the no automatic retransmission */ |
mbed_official | 52:a51c77007319 | 222 | if (CAN_InitStruct->CAN_NART == ENABLE) |
mbed_official | 52:a51c77007319 | 223 | { |
mbed_official | 52:a51c77007319 | 224 | CANx->MCR |= CAN_MCR_NART; |
mbed_official | 52:a51c77007319 | 225 | } |
mbed_official | 52:a51c77007319 | 226 | else |
mbed_official | 52:a51c77007319 | 227 | { |
mbed_official | 52:a51c77007319 | 228 | CANx->MCR &= ~(uint32_t)CAN_MCR_NART; |
mbed_official | 52:a51c77007319 | 229 | } |
mbed_official | 52:a51c77007319 | 230 | |
mbed_official | 52:a51c77007319 | 231 | /* Set the receive FIFO locked mode */ |
mbed_official | 52:a51c77007319 | 232 | if (CAN_InitStruct->CAN_RFLM == ENABLE) |
mbed_official | 52:a51c77007319 | 233 | { |
mbed_official | 52:a51c77007319 | 234 | CANx->MCR |= CAN_MCR_RFLM; |
mbed_official | 52:a51c77007319 | 235 | } |
mbed_official | 52:a51c77007319 | 236 | else |
mbed_official | 52:a51c77007319 | 237 | { |
mbed_official | 52:a51c77007319 | 238 | CANx->MCR &= ~(uint32_t)CAN_MCR_RFLM; |
mbed_official | 52:a51c77007319 | 239 | } |
mbed_official | 52:a51c77007319 | 240 | |
mbed_official | 52:a51c77007319 | 241 | /* Set the transmit FIFO priority */ |
mbed_official | 52:a51c77007319 | 242 | if (CAN_InitStruct->CAN_TXFP == ENABLE) |
mbed_official | 52:a51c77007319 | 243 | { |
mbed_official | 52:a51c77007319 | 244 | CANx->MCR |= CAN_MCR_TXFP; |
mbed_official | 52:a51c77007319 | 245 | } |
mbed_official | 52:a51c77007319 | 246 | else |
mbed_official | 52:a51c77007319 | 247 | { |
mbed_official | 52:a51c77007319 | 248 | CANx->MCR &= ~(uint32_t)CAN_MCR_TXFP; |
mbed_official | 52:a51c77007319 | 249 | } |
mbed_official | 52:a51c77007319 | 250 | |
mbed_official | 52:a51c77007319 | 251 | /* Set the bit timing register */ |
mbed_official | 52:a51c77007319 | 252 | CANx->BTR = (uint32_t)((uint32_t)CAN_InitStruct->CAN_Mode << 30) | \ |
mbed_official | 52:a51c77007319 | 253 | ((uint32_t)CAN_InitStruct->CAN_SJW << 24) | \ |
mbed_official | 52:a51c77007319 | 254 | ((uint32_t)CAN_InitStruct->CAN_BS1 << 16) | \ |
mbed_official | 52:a51c77007319 | 255 | ((uint32_t)CAN_InitStruct->CAN_BS2 << 20) | \ |
mbed_official | 52:a51c77007319 | 256 | ((uint32_t)CAN_InitStruct->CAN_Prescaler - 1); |
mbed_official | 52:a51c77007319 | 257 | |
mbed_official | 52:a51c77007319 | 258 | /* Request leave initialisation */ |
mbed_official | 52:a51c77007319 | 259 | CANx->MCR &= ~(uint32_t)CAN_MCR_INRQ; |
mbed_official | 52:a51c77007319 | 260 | |
mbed_official | 52:a51c77007319 | 261 | /* Wait the acknowledge */ |
mbed_official | 52:a51c77007319 | 262 | wait_ack = 0; |
mbed_official | 52:a51c77007319 | 263 | |
mbed_official | 52:a51c77007319 | 264 | while (((CANx->MSR & CAN_MSR_INAK) == CAN_MSR_INAK) && (wait_ack != INAK_TIMEOUT)) |
mbed_official | 52:a51c77007319 | 265 | { |
mbed_official | 52:a51c77007319 | 266 | wait_ack++; |
mbed_official | 52:a51c77007319 | 267 | } |
mbed_official | 52:a51c77007319 | 268 | |
mbed_official | 52:a51c77007319 | 269 | /* ...and check acknowledged */ |
mbed_official | 52:a51c77007319 | 270 | if ((CANx->MSR & CAN_MSR_INAK) == CAN_MSR_INAK) |
mbed_official | 52:a51c77007319 | 271 | { |
mbed_official | 52:a51c77007319 | 272 | InitStatus = CAN_InitStatus_Failed; |
mbed_official | 52:a51c77007319 | 273 | } |
mbed_official | 52:a51c77007319 | 274 | else |
mbed_official | 52:a51c77007319 | 275 | { |
mbed_official | 52:a51c77007319 | 276 | InitStatus = CAN_InitStatus_Success ; |
mbed_official | 52:a51c77007319 | 277 | } |
mbed_official | 52:a51c77007319 | 278 | } |
mbed_official | 52:a51c77007319 | 279 | |
mbed_official | 52:a51c77007319 | 280 | /* At this step, return the status of initialization */ |
mbed_official | 52:a51c77007319 | 281 | return InitStatus; |
mbed_official | 52:a51c77007319 | 282 | } |
mbed_official | 52:a51c77007319 | 283 | |
mbed_official | 52:a51c77007319 | 284 | /** |
mbed_official | 52:a51c77007319 | 285 | * @brief Initializes the CAN peripheral according to the specified |
mbed_official | 52:a51c77007319 | 286 | * parameters in the CAN_FilterInitStruct. |
mbed_official | 52:a51c77007319 | 287 | * @param CAN_FilterInitStruct: pointer to a CAN_FilterInitTypeDef |
mbed_official | 52:a51c77007319 | 288 | * structure that contains the configuration |
mbed_official | 52:a51c77007319 | 289 | * information. |
mbed_official | 52:a51c77007319 | 290 | * @retval None. |
mbed_official | 52:a51c77007319 | 291 | */ |
mbed_official | 52:a51c77007319 | 292 | void CAN_FilterInit(CAN_FilterInitTypeDef* CAN_FilterInitStruct) |
mbed_official | 52:a51c77007319 | 293 | { |
mbed_official | 52:a51c77007319 | 294 | uint32_t filter_number_bit_pos = 0; |
mbed_official | 52:a51c77007319 | 295 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 296 | assert_param(IS_CAN_FILTER_NUMBER(CAN_FilterInitStruct->CAN_FilterNumber)); |
mbed_official | 52:a51c77007319 | 297 | assert_param(IS_CAN_FILTER_MODE(CAN_FilterInitStruct->CAN_FilterMode)); |
mbed_official | 52:a51c77007319 | 298 | assert_param(IS_CAN_FILTER_SCALE(CAN_FilterInitStruct->CAN_FilterScale)); |
mbed_official | 52:a51c77007319 | 299 | assert_param(IS_CAN_FILTER_FIFO(CAN_FilterInitStruct->CAN_FilterFIFOAssignment)); |
mbed_official | 52:a51c77007319 | 300 | assert_param(IS_FUNCTIONAL_STATE(CAN_FilterInitStruct->CAN_FilterActivation)); |
mbed_official | 52:a51c77007319 | 301 | |
mbed_official | 52:a51c77007319 | 302 | filter_number_bit_pos = ((uint32_t)1) << CAN_FilterInitStruct->CAN_FilterNumber; |
mbed_official | 52:a51c77007319 | 303 | |
mbed_official | 52:a51c77007319 | 304 | /* Initialisation mode for the filter */ |
mbed_official | 52:a51c77007319 | 305 | CAN1->FMR |= FMR_FINIT; |
mbed_official | 52:a51c77007319 | 306 | |
mbed_official | 52:a51c77007319 | 307 | /* Filter Deactivation */ |
mbed_official | 52:a51c77007319 | 308 | CAN1->FA1R &= ~(uint32_t)filter_number_bit_pos; |
mbed_official | 52:a51c77007319 | 309 | |
mbed_official | 52:a51c77007319 | 310 | /* Filter Scale */ |
mbed_official | 52:a51c77007319 | 311 | if (CAN_FilterInitStruct->CAN_FilterScale == CAN_FilterScale_16bit) |
mbed_official | 52:a51c77007319 | 312 | { |
mbed_official | 52:a51c77007319 | 313 | /* 16-bit scale for the filter */ |
mbed_official | 52:a51c77007319 | 314 | CAN1->FS1R &= ~(uint32_t)filter_number_bit_pos; |
mbed_official | 52:a51c77007319 | 315 | |
mbed_official | 52:a51c77007319 | 316 | /* First 16-bit identifier and First 16-bit mask */ |
mbed_official | 52:a51c77007319 | 317 | /* Or First 16-bit identifier and Second 16-bit identifier */ |
mbed_official | 52:a51c77007319 | 318 | CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR1 = |
mbed_official | 52:a51c77007319 | 319 | ((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdLow) << 16) | |
mbed_official | 52:a51c77007319 | 320 | (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdLow); |
mbed_official | 52:a51c77007319 | 321 | |
mbed_official | 52:a51c77007319 | 322 | /* Second 16-bit identifier and Second 16-bit mask */ |
mbed_official | 52:a51c77007319 | 323 | /* Or Third 16-bit identifier and Fourth 16-bit identifier */ |
mbed_official | 52:a51c77007319 | 324 | CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR2 = |
mbed_official | 52:a51c77007319 | 325 | ((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdHigh) << 16) | |
mbed_official | 52:a51c77007319 | 326 | (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdHigh); |
mbed_official | 52:a51c77007319 | 327 | } |
mbed_official | 52:a51c77007319 | 328 | |
mbed_official | 52:a51c77007319 | 329 | if (CAN_FilterInitStruct->CAN_FilterScale == CAN_FilterScale_32bit) |
mbed_official | 52:a51c77007319 | 330 | { |
mbed_official | 52:a51c77007319 | 331 | /* 32-bit scale for the filter */ |
mbed_official | 52:a51c77007319 | 332 | CAN1->FS1R |= filter_number_bit_pos; |
mbed_official | 52:a51c77007319 | 333 | /* 32-bit identifier or First 32-bit identifier */ |
mbed_official | 52:a51c77007319 | 334 | CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR1 = |
mbed_official | 52:a51c77007319 | 335 | ((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdHigh) << 16) | |
mbed_official | 52:a51c77007319 | 336 | (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdLow); |
mbed_official | 52:a51c77007319 | 337 | /* 32-bit mask or Second 32-bit identifier */ |
mbed_official | 52:a51c77007319 | 338 | CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR2 = |
mbed_official | 52:a51c77007319 | 339 | ((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdHigh) << 16) | |
mbed_official | 52:a51c77007319 | 340 | (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdLow); |
mbed_official | 52:a51c77007319 | 341 | } |
mbed_official | 52:a51c77007319 | 342 | |
mbed_official | 52:a51c77007319 | 343 | /* Filter Mode */ |
mbed_official | 52:a51c77007319 | 344 | if (CAN_FilterInitStruct->CAN_FilterMode == CAN_FilterMode_IdMask) |
mbed_official | 52:a51c77007319 | 345 | { |
mbed_official | 52:a51c77007319 | 346 | /*Id/Mask mode for the filter*/ |
mbed_official | 52:a51c77007319 | 347 | CAN1->FM1R &= ~(uint32_t)filter_number_bit_pos; |
mbed_official | 52:a51c77007319 | 348 | } |
mbed_official | 52:a51c77007319 | 349 | else /* CAN_FilterInitStruct->CAN_FilterMode == CAN_FilterMode_IdList */ |
mbed_official | 52:a51c77007319 | 350 | { |
mbed_official | 52:a51c77007319 | 351 | /*Identifier list mode for the filter*/ |
mbed_official | 52:a51c77007319 | 352 | CAN1->FM1R |= (uint32_t)filter_number_bit_pos; |
mbed_official | 52:a51c77007319 | 353 | } |
mbed_official | 52:a51c77007319 | 354 | |
mbed_official | 52:a51c77007319 | 355 | /* Filter FIFO assignment */ |
mbed_official | 52:a51c77007319 | 356 | if (CAN_FilterInitStruct->CAN_FilterFIFOAssignment == CAN_Filter_FIFO0) |
mbed_official | 52:a51c77007319 | 357 | { |
mbed_official | 52:a51c77007319 | 358 | /* FIFO 0 assignation for the filter */ |
mbed_official | 52:a51c77007319 | 359 | CAN1->FFA1R &= ~(uint32_t)filter_number_bit_pos; |
mbed_official | 52:a51c77007319 | 360 | } |
mbed_official | 52:a51c77007319 | 361 | |
mbed_official | 52:a51c77007319 | 362 | if (CAN_FilterInitStruct->CAN_FilterFIFOAssignment == CAN_Filter_FIFO1) |
mbed_official | 52:a51c77007319 | 363 | { |
mbed_official | 52:a51c77007319 | 364 | /* FIFO 1 assignation for the filter */ |
mbed_official | 52:a51c77007319 | 365 | CAN1->FFA1R |= (uint32_t)filter_number_bit_pos; |
mbed_official | 52:a51c77007319 | 366 | } |
mbed_official | 52:a51c77007319 | 367 | |
mbed_official | 52:a51c77007319 | 368 | /* Filter activation */ |
mbed_official | 52:a51c77007319 | 369 | if (CAN_FilterInitStruct->CAN_FilterActivation == ENABLE) |
mbed_official | 52:a51c77007319 | 370 | { |
mbed_official | 52:a51c77007319 | 371 | CAN1->FA1R |= filter_number_bit_pos; |
mbed_official | 52:a51c77007319 | 372 | } |
mbed_official | 52:a51c77007319 | 373 | |
mbed_official | 52:a51c77007319 | 374 | /* Leave the initialisation mode for the filter */ |
mbed_official | 52:a51c77007319 | 375 | CAN1->FMR &= ~FMR_FINIT; |
mbed_official | 52:a51c77007319 | 376 | } |
mbed_official | 52:a51c77007319 | 377 | |
mbed_official | 52:a51c77007319 | 378 | /** |
mbed_official | 52:a51c77007319 | 379 | * @brief Fills each CAN_InitStruct member with its default value. |
mbed_official | 52:a51c77007319 | 380 | * @param CAN_InitStruct: pointer to a CAN_InitTypeDef structure which |
mbed_official | 52:a51c77007319 | 381 | * will be initialized. |
mbed_official | 52:a51c77007319 | 382 | * @retval None. |
mbed_official | 52:a51c77007319 | 383 | */ |
mbed_official | 52:a51c77007319 | 384 | void CAN_StructInit(CAN_InitTypeDef* CAN_InitStruct) |
mbed_official | 52:a51c77007319 | 385 | { |
mbed_official | 52:a51c77007319 | 386 | /* Reset CAN init structure parameters values */ |
mbed_official | 52:a51c77007319 | 387 | |
mbed_official | 52:a51c77007319 | 388 | /* Initialize the time triggered communication mode */ |
mbed_official | 52:a51c77007319 | 389 | CAN_InitStruct->CAN_TTCM = DISABLE; |
mbed_official | 52:a51c77007319 | 390 | |
mbed_official | 52:a51c77007319 | 391 | /* Initialize the automatic bus-off management */ |
mbed_official | 52:a51c77007319 | 392 | CAN_InitStruct->CAN_ABOM = DISABLE; |
mbed_official | 52:a51c77007319 | 393 | |
mbed_official | 52:a51c77007319 | 394 | /* Initialize the automatic wake-up mode */ |
mbed_official | 52:a51c77007319 | 395 | CAN_InitStruct->CAN_AWUM = DISABLE; |
mbed_official | 52:a51c77007319 | 396 | |
mbed_official | 52:a51c77007319 | 397 | /* Initialize the no automatic retransmission */ |
mbed_official | 52:a51c77007319 | 398 | CAN_InitStruct->CAN_NART = DISABLE; |
mbed_official | 52:a51c77007319 | 399 | |
mbed_official | 52:a51c77007319 | 400 | /* Initialize the receive FIFO locked mode */ |
mbed_official | 52:a51c77007319 | 401 | CAN_InitStruct->CAN_RFLM = DISABLE; |
mbed_official | 52:a51c77007319 | 402 | |
mbed_official | 52:a51c77007319 | 403 | /* Initialize the transmit FIFO priority */ |
mbed_official | 52:a51c77007319 | 404 | CAN_InitStruct->CAN_TXFP = DISABLE; |
mbed_official | 52:a51c77007319 | 405 | |
mbed_official | 52:a51c77007319 | 406 | /* Initialize the CAN_Mode member */ |
mbed_official | 52:a51c77007319 | 407 | CAN_InitStruct->CAN_Mode = CAN_Mode_Normal; |
mbed_official | 52:a51c77007319 | 408 | |
mbed_official | 52:a51c77007319 | 409 | /* Initialize the CAN_SJW member */ |
mbed_official | 52:a51c77007319 | 410 | CAN_InitStruct->CAN_SJW = CAN_SJW_1tq; |
mbed_official | 52:a51c77007319 | 411 | |
mbed_official | 52:a51c77007319 | 412 | /* Initialize the CAN_BS1 member */ |
mbed_official | 52:a51c77007319 | 413 | CAN_InitStruct->CAN_BS1 = CAN_BS1_4tq; |
mbed_official | 52:a51c77007319 | 414 | |
mbed_official | 52:a51c77007319 | 415 | /* Initialize the CAN_BS2 member */ |
mbed_official | 52:a51c77007319 | 416 | CAN_InitStruct->CAN_BS2 = CAN_BS2_3tq; |
mbed_official | 52:a51c77007319 | 417 | |
mbed_official | 52:a51c77007319 | 418 | /* Initialize the CAN_Prescaler member */ |
mbed_official | 52:a51c77007319 | 419 | CAN_InitStruct->CAN_Prescaler = 1; |
mbed_official | 52:a51c77007319 | 420 | } |
mbed_official | 52:a51c77007319 | 421 | |
mbed_official | 52:a51c77007319 | 422 | /** |
mbed_official | 52:a51c77007319 | 423 | * @brief Select the start bank filter for slave CAN. |
mbed_official | 52:a51c77007319 | 424 | * @note This function applies only to STM32 Connectivity line devices. |
mbed_official | 52:a51c77007319 | 425 | * @param CAN_BankNumber: Select the start slave bank filter from 1..27. |
mbed_official | 52:a51c77007319 | 426 | * @retval None. |
mbed_official | 52:a51c77007319 | 427 | */ |
mbed_official | 52:a51c77007319 | 428 | void CAN_SlaveStartBank(uint8_t CAN_BankNumber) |
mbed_official | 52:a51c77007319 | 429 | { |
mbed_official | 52:a51c77007319 | 430 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 431 | assert_param(IS_CAN_BANKNUMBER(CAN_BankNumber)); |
mbed_official | 52:a51c77007319 | 432 | |
mbed_official | 52:a51c77007319 | 433 | /* Enter Initialisation mode for the filter */ |
mbed_official | 52:a51c77007319 | 434 | CAN1->FMR |= FMR_FINIT; |
mbed_official | 52:a51c77007319 | 435 | |
mbed_official | 52:a51c77007319 | 436 | /* Select the start slave bank */ |
mbed_official | 52:a51c77007319 | 437 | CAN1->FMR &= (uint32_t)0xFFFFC0F1 ; |
mbed_official | 52:a51c77007319 | 438 | CAN1->FMR |= (uint32_t)(CAN_BankNumber)<<8; |
mbed_official | 52:a51c77007319 | 439 | |
mbed_official | 52:a51c77007319 | 440 | /* Leave Initialisation mode for the filter */ |
mbed_official | 52:a51c77007319 | 441 | CAN1->FMR &= ~FMR_FINIT; |
mbed_official | 52:a51c77007319 | 442 | } |
mbed_official | 52:a51c77007319 | 443 | |
mbed_official | 52:a51c77007319 | 444 | /** |
mbed_official | 52:a51c77007319 | 445 | * @brief Enables or disables the DBG Freeze for CAN. |
mbed_official | 52:a51c77007319 | 446 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 447 | * @param NewState: new state of the CAN peripheral. This parameter can |
mbed_official | 52:a51c77007319 | 448 | * be: ENABLE or DISABLE. |
mbed_official | 52:a51c77007319 | 449 | * @retval None. |
mbed_official | 52:a51c77007319 | 450 | */ |
mbed_official | 52:a51c77007319 | 451 | void CAN_DBGFreeze(CAN_TypeDef* CANx, FunctionalState NewState) |
mbed_official | 52:a51c77007319 | 452 | { |
mbed_official | 52:a51c77007319 | 453 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 454 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 455 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 52:a51c77007319 | 456 | |
mbed_official | 52:a51c77007319 | 457 | if (NewState != DISABLE) |
mbed_official | 52:a51c77007319 | 458 | { |
mbed_official | 52:a51c77007319 | 459 | /* Enable Debug Freeze */ |
mbed_official | 52:a51c77007319 | 460 | CANx->MCR |= MCR_DBF; |
mbed_official | 52:a51c77007319 | 461 | } |
mbed_official | 52:a51c77007319 | 462 | else |
mbed_official | 52:a51c77007319 | 463 | { |
mbed_official | 52:a51c77007319 | 464 | /* Disable Debug Freeze */ |
mbed_official | 52:a51c77007319 | 465 | CANx->MCR &= ~MCR_DBF; |
mbed_official | 52:a51c77007319 | 466 | } |
mbed_official | 52:a51c77007319 | 467 | } |
mbed_official | 52:a51c77007319 | 468 | |
mbed_official | 52:a51c77007319 | 469 | |
mbed_official | 52:a51c77007319 | 470 | /** |
mbed_official | 52:a51c77007319 | 471 | * @brief Enables or disabes the CAN Time TriggerOperation communication mode. |
mbed_official | 52:a51c77007319 | 472 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 473 | * @param NewState : Mode new state , can be one of @ref FunctionalState. |
mbed_official | 52:a51c77007319 | 474 | * @note when enabled, Time stamp (TIME[15:0]) value is sent in the last |
mbed_official | 52:a51c77007319 | 475 | * two data bytes of the 8-byte message: TIME[7:0] in data byte 6 |
mbed_official | 52:a51c77007319 | 476 | * and TIME[15:8] in data byte 7 |
mbed_official | 52:a51c77007319 | 477 | * @note DLC must be programmed as 8 in order Time Stamp (2 bytes) to be |
mbed_official | 52:a51c77007319 | 478 | * sent over the CAN bus. |
mbed_official | 52:a51c77007319 | 479 | * @retval None |
mbed_official | 52:a51c77007319 | 480 | */ |
mbed_official | 52:a51c77007319 | 481 | void CAN_TTComModeCmd(CAN_TypeDef* CANx, FunctionalState NewState) |
mbed_official | 52:a51c77007319 | 482 | { |
mbed_official | 52:a51c77007319 | 483 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 484 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 485 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 52:a51c77007319 | 486 | if (NewState != DISABLE) |
mbed_official | 52:a51c77007319 | 487 | { |
mbed_official | 52:a51c77007319 | 488 | /* Enable the TTCM mode */ |
mbed_official | 52:a51c77007319 | 489 | CANx->MCR |= CAN_MCR_TTCM; |
mbed_official | 52:a51c77007319 | 490 | |
mbed_official | 52:a51c77007319 | 491 | /* Set TGT bits */ |
mbed_official | 52:a51c77007319 | 492 | CANx->sTxMailBox[0].TDTR |= ((uint32_t)CAN_TDT0R_TGT); |
mbed_official | 52:a51c77007319 | 493 | CANx->sTxMailBox[1].TDTR |= ((uint32_t)CAN_TDT1R_TGT); |
mbed_official | 52:a51c77007319 | 494 | CANx->sTxMailBox[2].TDTR |= ((uint32_t)CAN_TDT2R_TGT); |
mbed_official | 52:a51c77007319 | 495 | } |
mbed_official | 52:a51c77007319 | 496 | else |
mbed_official | 52:a51c77007319 | 497 | { |
mbed_official | 52:a51c77007319 | 498 | /* Disable the TTCM mode */ |
mbed_official | 52:a51c77007319 | 499 | CANx->MCR &= (uint32_t)(~(uint32_t)CAN_MCR_TTCM); |
mbed_official | 52:a51c77007319 | 500 | |
mbed_official | 52:a51c77007319 | 501 | /* Reset TGT bits */ |
mbed_official | 52:a51c77007319 | 502 | CANx->sTxMailBox[0].TDTR &= ((uint32_t)~CAN_TDT0R_TGT); |
mbed_official | 52:a51c77007319 | 503 | CANx->sTxMailBox[1].TDTR &= ((uint32_t)~CAN_TDT1R_TGT); |
mbed_official | 52:a51c77007319 | 504 | CANx->sTxMailBox[2].TDTR &= ((uint32_t)~CAN_TDT2R_TGT); |
mbed_official | 52:a51c77007319 | 505 | } |
mbed_official | 52:a51c77007319 | 506 | } |
mbed_official | 52:a51c77007319 | 507 | /** |
mbed_official | 52:a51c77007319 | 508 | * @brief Initiates the transmission of a message. |
mbed_official | 52:a51c77007319 | 509 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 510 | * @param TxMessage: pointer to a structure which contains CAN Id, CAN |
mbed_official | 52:a51c77007319 | 511 | * DLC and CAN data. |
mbed_official | 52:a51c77007319 | 512 | * @retval The number of the mailbox that is used for transmission |
mbed_official | 52:a51c77007319 | 513 | * or CAN_TxStatus_NoMailBox if there is no empty mailbox. |
mbed_official | 52:a51c77007319 | 514 | */ |
mbed_official | 52:a51c77007319 | 515 | uint8_t CAN_Transmit(CAN_TypeDef* CANx, CanTxMsg* TxMessage) |
mbed_official | 52:a51c77007319 | 516 | { |
mbed_official | 52:a51c77007319 | 517 | uint8_t transmit_mailbox = 0; |
mbed_official | 52:a51c77007319 | 518 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 519 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 520 | assert_param(IS_CAN_IDTYPE(TxMessage->IDE)); |
mbed_official | 52:a51c77007319 | 521 | assert_param(IS_CAN_RTR(TxMessage->RTR)); |
mbed_official | 52:a51c77007319 | 522 | assert_param(IS_CAN_DLC(TxMessage->DLC)); |
mbed_official | 52:a51c77007319 | 523 | |
mbed_official | 52:a51c77007319 | 524 | /* Select one empty transmit mailbox */ |
mbed_official | 52:a51c77007319 | 525 | if ((CANx->TSR&CAN_TSR_TME0) == CAN_TSR_TME0) |
mbed_official | 52:a51c77007319 | 526 | { |
mbed_official | 52:a51c77007319 | 527 | transmit_mailbox = 0; |
mbed_official | 52:a51c77007319 | 528 | } |
mbed_official | 52:a51c77007319 | 529 | else if ((CANx->TSR&CAN_TSR_TME1) == CAN_TSR_TME1) |
mbed_official | 52:a51c77007319 | 530 | { |
mbed_official | 52:a51c77007319 | 531 | transmit_mailbox = 1; |
mbed_official | 52:a51c77007319 | 532 | } |
mbed_official | 52:a51c77007319 | 533 | else if ((CANx->TSR&CAN_TSR_TME2) == CAN_TSR_TME2) |
mbed_official | 52:a51c77007319 | 534 | { |
mbed_official | 52:a51c77007319 | 535 | transmit_mailbox = 2; |
mbed_official | 52:a51c77007319 | 536 | } |
mbed_official | 52:a51c77007319 | 537 | else |
mbed_official | 52:a51c77007319 | 538 | { |
mbed_official | 52:a51c77007319 | 539 | transmit_mailbox = CAN_TxStatus_NoMailBox; |
mbed_official | 52:a51c77007319 | 540 | } |
mbed_official | 52:a51c77007319 | 541 | |
mbed_official | 52:a51c77007319 | 542 | if (transmit_mailbox != CAN_TxStatus_NoMailBox) |
mbed_official | 52:a51c77007319 | 543 | { |
mbed_official | 52:a51c77007319 | 544 | /* Set up the Id */ |
mbed_official | 52:a51c77007319 | 545 | CANx->sTxMailBox[transmit_mailbox].TIR &= TMIDxR_TXRQ; |
mbed_official | 52:a51c77007319 | 546 | if (TxMessage->IDE == CAN_Id_Standard) |
mbed_official | 52:a51c77007319 | 547 | { |
mbed_official | 52:a51c77007319 | 548 | assert_param(IS_CAN_STDID(TxMessage->StdId)); |
mbed_official | 52:a51c77007319 | 549 | CANx->sTxMailBox[transmit_mailbox].TIR |= ((TxMessage->StdId << 21) | \ |
mbed_official | 52:a51c77007319 | 550 | TxMessage->RTR); |
mbed_official | 52:a51c77007319 | 551 | } |
mbed_official | 52:a51c77007319 | 552 | else |
mbed_official | 52:a51c77007319 | 553 | { |
mbed_official | 52:a51c77007319 | 554 | assert_param(IS_CAN_EXTID(TxMessage->ExtId)); |
mbed_official | 52:a51c77007319 | 555 | CANx->sTxMailBox[transmit_mailbox].TIR |= ((TxMessage->ExtId << 3) | \ |
mbed_official | 52:a51c77007319 | 556 | TxMessage->IDE | \ |
mbed_official | 52:a51c77007319 | 557 | TxMessage->RTR); |
mbed_official | 52:a51c77007319 | 558 | } |
mbed_official | 52:a51c77007319 | 559 | |
mbed_official | 52:a51c77007319 | 560 | /* Set up the DLC */ |
mbed_official | 52:a51c77007319 | 561 | TxMessage->DLC &= (uint8_t)0x0000000F; |
mbed_official | 52:a51c77007319 | 562 | CANx->sTxMailBox[transmit_mailbox].TDTR &= (uint32_t)0xFFFFFFF0; |
mbed_official | 52:a51c77007319 | 563 | CANx->sTxMailBox[transmit_mailbox].TDTR |= TxMessage->DLC; |
mbed_official | 52:a51c77007319 | 564 | |
mbed_official | 52:a51c77007319 | 565 | /* Set up the data field */ |
mbed_official | 52:a51c77007319 | 566 | CANx->sTxMailBox[transmit_mailbox].TDLR = (((uint32_t)TxMessage->Data[3] << 24) | |
mbed_official | 52:a51c77007319 | 567 | ((uint32_t)TxMessage->Data[2] << 16) | |
mbed_official | 52:a51c77007319 | 568 | ((uint32_t)TxMessage->Data[1] << 8) | |
mbed_official | 52:a51c77007319 | 569 | ((uint32_t)TxMessage->Data[0])); |
mbed_official | 52:a51c77007319 | 570 | CANx->sTxMailBox[transmit_mailbox].TDHR = (((uint32_t)TxMessage->Data[7] << 24) | |
mbed_official | 52:a51c77007319 | 571 | ((uint32_t)TxMessage->Data[6] << 16) | |
mbed_official | 52:a51c77007319 | 572 | ((uint32_t)TxMessage->Data[5] << 8) | |
mbed_official | 52:a51c77007319 | 573 | ((uint32_t)TxMessage->Data[4])); |
mbed_official | 52:a51c77007319 | 574 | /* Request transmission */ |
mbed_official | 52:a51c77007319 | 575 | CANx->sTxMailBox[transmit_mailbox].TIR |= TMIDxR_TXRQ; |
mbed_official | 52:a51c77007319 | 576 | } |
mbed_official | 52:a51c77007319 | 577 | return transmit_mailbox; |
mbed_official | 52:a51c77007319 | 578 | } |
mbed_official | 52:a51c77007319 | 579 | |
mbed_official | 52:a51c77007319 | 580 | /** |
mbed_official | 52:a51c77007319 | 581 | * @brief Checks the transmission of a message. |
mbed_official | 52:a51c77007319 | 582 | * @param CANx: where x can be 1 or 2 to to select the |
mbed_official | 52:a51c77007319 | 583 | * CAN peripheral. |
mbed_official | 52:a51c77007319 | 584 | * @param TransmitMailbox: the number of the mailbox that is used for |
mbed_official | 52:a51c77007319 | 585 | * transmission. |
mbed_official | 52:a51c77007319 | 586 | * @retval CAN_TxStatus_Ok if the CAN driver transmits the message, CAN_TxStatus_Failed |
mbed_official | 52:a51c77007319 | 587 | * in an other case. |
mbed_official | 52:a51c77007319 | 588 | */ |
mbed_official | 52:a51c77007319 | 589 | uint8_t CAN_TransmitStatus(CAN_TypeDef* CANx, uint8_t TransmitMailbox) |
mbed_official | 52:a51c77007319 | 590 | { |
mbed_official | 52:a51c77007319 | 591 | uint32_t state = 0; |
mbed_official | 52:a51c77007319 | 592 | |
mbed_official | 52:a51c77007319 | 593 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 594 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 595 | assert_param(IS_CAN_TRANSMITMAILBOX(TransmitMailbox)); |
mbed_official | 52:a51c77007319 | 596 | |
mbed_official | 52:a51c77007319 | 597 | switch (TransmitMailbox) |
mbed_official | 52:a51c77007319 | 598 | { |
mbed_official | 52:a51c77007319 | 599 | case (CAN_TXMAILBOX_0): |
mbed_official | 52:a51c77007319 | 600 | state = CANx->TSR & (CAN_TSR_RQCP0 | CAN_TSR_TXOK0 | CAN_TSR_TME0); |
mbed_official | 52:a51c77007319 | 601 | break; |
mbed_official | 52:a51c77007319 | 602 | case (CAN_TXMAILBOX_1): |
mbed_official | 52:a51c77007319 | 603 | state = CANx->TSR & (CAN_TSR_RQCP1 | CAN_TSR_TXOK1 | CAN_TSR_TME1); |
mbed_official | 52:a51c77007319 | 604 | break; |
mbed_official | 52:a51c77007319 | 605 | case (CAN_TXMAILBOX_2): |
mbed_official | 52:a51c77007319 | 606 | state = CANx->TSR & (CAN_TSR_RQCP2 | CAN_TSR_TXOK2 | CAN_TSR_TME2); |
mbed_official | 52:a51c77007319 | 607 | break; |
mbed_official | 52:a51c77007319 | 608 | default: |
mbed_official | 52:a51c77007319 | 609 | state = CAN_TxStatus_Failed; |
mbed_official | 52:a51c77007319 | 610 | break; |
mbed_official | 52:a51c77007319 | 611 | } |
mbed_official | 52:a51c77007319 | 612 | switch (state) |
mbed_official | 52:a51c77007319 | 613 | { |
mbed_official | 52:a51c77007319 | 614 | /* transmit pending */ |
mbed_official | 52:a51c77007319 | 615 | case (0x0): state = CAN_TxStatus_Pending; |
mbed_official | 52:a51c77007319 | 616 | break; |
mbed_official | 52:a51c77007319 | 617 | /* transmit failed */ |
mbed_official | 52:a51c77007319 | 618 | case (CAN_TSR_RQCP0 | CAN_TSR_TME0): state = CAN_TxStatus_Failed; |
mbed_official | 52:a51c77007319 | 619 | break; |
mbed_official | 52:a51c77007319 | 620 | case (CAN_TSR_RQCP1 | CAN_TSR_TME1): state = CAN_TxStatus_Failed; |
mbed_official | 52:a51c77007319 | 621 | break; |
mbed_official | 52:a51c77007319 | 622 | case (CAN_TSR_RQCP2 | CAN_TSR_TME2): state = CAN_TxStatus_Failed; |
mbed_official | 52:a51c77007319 | 623 | break; |
mbed_official | 52:a51c77007319 | 624 | /* transmit succeeded */ |
mbed_official | 52:a51c77007319 | 625 | case (CAN_TSR_RQCP0 | CAN_TSR_TXOK0 | CAN_TSR_TME0):state = CAN_TxStatus_Ok; |
mbed_official | 52:a51c77007319 | 626 | break; |
mbed_official | 52:a51c77007319 | 627 | case (CAN_TSR_RQCP1 | CAN_TSR_TXOK1 | CAN_TSR_TME1):state = CAN_TxStatus_Ok; |
mbed_official | 52:a51c77007319 | 628 | break; |
mbed_official | 52:a51c77007319 | 629 | case (CAN_TSR_RQCP2 | CAN_TSR_TXOK2 | CAN_TSR_TME2):state = CAN_TxStatus_Ok; |
mbed_official | 52:a51c77007319 | 630 | break; |
mbed_official | 52:a51c77007319 | 631 | default: state = CAN_TxStatus_Failed; |
mbed_official | 52:a51c77007319 | 632 | break; |
mbed_official | 52:a51c77007319 | 633 | } |
mbed_official | 52:a51c77007319 | 634 | return (uint8_t) state; |
mbed_official | 52:a51c77007319 | 635 | } |
mbed_official | 52:a51c77007319 | 636 | |
mbed_official | 52:a51c77007319 | 637 | /** |
mbed_official | 52:a51c77007319 | 638 | * @brief Cancels a transmit request. |
mbed_official | 52:a51c77007319 | 639 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 640 | * @param Mailbox: Mailbox number. |
mbed_official | 52:a51c77007319 | 641 | * @retval None. |
mbed_official | 52:a51c77007319 | 642 | */ |
mbed_official | 52:a51c77007319 | 643 | void CAN_CancelTransmit(CAN_TypeDef* CANx, uint8_t Mailbox) |
mbed_official | 52:a51c77007319 | 644 | { |
mbed_official | 52:a51c77007319 | 645 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 646 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 647 | assert_param(IS_CAN_TRANSMITMAILBOX(Mailbox)); |
mbed_official | 52:a51c77007319 | 648 | /* abort transmission */ |
mbed_official | 52:a51c77007319 | 649 | switch (Mailbox) |
mbed_official | 52:a51c77007319 | 650 | { |
mbed_official | 52:a51c77007319 | 651 | case (CAN_TXMAILBOX_0): CANx->TSR |= CAN_TSR_ABRQ0; |
mbed_official | 52:a51c77007319 | 652 | break; |
mbed_official | 52:a51c77007319 | 653 | case (CAN_TXMAILBOX_1): CANx->TSR |= CAN_TSR_ABRQ1; |
mbed_official | 52:a51c77007319 | 654 | break; |
mbed_official | 52:a51c77007319 | 655 | case (CAN_TXMAILBOX_2): CANx->TSR |= CAN_TSR_ABRQ2; |
mbed_official | 52:a51c77007319 | 656 | break; |
mbed_official | 52:a51c77007319 | 657 | default: |
mbed_official | 52:a51c77007319 | 658 | break; |
mbed_official | 52:a51c77007319 | 659 | } |
mbed_official | 52:a51c77007319 | 660 | } |
mbed_official | 52:a51c77007319 | 661 | |
mbed_official | 52:a51c77007319 | 662 | |
mbed_official | 52:a51c77007319 | 663 | /** |
mbed_official | 52:a51c77007319 | 664 | * @brief Receives a message. |
mbed_official | 52:a51c77007319 | 665 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 666 | * @param FIFONumber: Receive FIFO number, CAN_FIFO0 or CAN_FIFO1. |
mbed_official | 52:a51c77007319 | 667 | * @param RxMessage: pointer to a structure receive message which contains |
mbed_official | 52:a51c77007319 | 668 | * CAN Id, CAN DLC, CAN datas and FMI number. |
mbed_official | 52:a51c77007319 | 669 | * @retval None. |
mbed_official | 52:a51c77007319 | 670 | */ |
mbed_official | 52:a51c77007319 | 671 | void CAN_Receive(CAN_TypeDef* CANx, uint8_t FIFONumber, CanRxMsg* RxMessage) |
mbed_official | 52:a51c77007319 | 672 | { |
mbed_official | 52:a51c77007319 | 673 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 674 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 675 | assert_param(IS_CAN_FIFO(FIFONumber)); |
mbed_official | 52:a51c77007319 | 676 | /* Get the Id */ |
mbed_official | 52:a51c77007319 | 677 | RxMessage->IDE = (uint8_t)0x04 & CANx->sFIFOMailBox[FIFONumber].RIR; |
mbed_official | 52:a51c77007319 | 678 | if (RxMessage->IDE == CAN_Id_Standard) |
mbed_official | 52:a51c77007319 | 679 | { |
mbed_official | 52:a51c77007319 | 680 | RxMessage->StdId = (uint32_t)0x000007FF & (CANx->sFIFOMailBox[FIFONumber].RIR >> 21); |
mbed_official | 52:a51c77007319 | 681 | } |
mbed_official | 52:a51c77007319 | 682 | else |
mbed_official | 52:a51c77007319 | 683 | { |
mbed_official | 52:a51c77007319 | 684 | RxMessage->ExtId = (uint32_t)0x1FFFFFFF & (CANx->sFIFOMailBox[FIFONumber].RIR >> 3); |
mbed_official | 52:a51c77007319 | 685 | } |
mbed_official | 52:a51c77007319 | 686 | |
mbed_official | 52:a51c77007319 | 687 | RxMessage->RTR = (uint8_t)0x02 & CANx->sFIFOMailBox[FIFONumber].RIR; |
mbed_official | 52:a51c77007319 | 688 | /* Get the DLC */ |
mbed_official | 52:a51c77007319 | 689 | RxMessage->DLC = (uint8_t)0x0F & CANx->sFIFOMailBox[FIFONumber].RDTR; |
mbed_official | 52:a51c77007319 | 690 | /* Get the FMI */ |
mbed_official | 52:a51c77007319 | 691 | RxMessage->FMI = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDTR >> 8); |
mbed_official | 52:a51c77007319 | 692 | /* Get the data field */ |
mbed_official | 52:a51c77007319 | 693 | RxMessage->Data[0] = (uint8_t)0xFF & CANx->sFIFOMailBox[FIFONumber].RDLR; |
mbed_official | 52:a51c77007319 | 694 | RxMessage->Data[1] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDLR >> 8); |
mbed_official | 52:a51c77007319 | 695 | RxMessage->Data[2] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDLR >> 16); |
mbed_official | 52:a51c77007319 | 696 | RxMessage->Data[3] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDLR >> 24); |
mbed_official | 52:a51c77007319 | 697 | RxMessage->Data[4] = (uint8_t)0xFF & CANx->sFIFOMailBox[FIFONumber].RDHR; |
mbed_official | 52:a51c77007319 | 698 | RxMessage->Data[5] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDHR >> 8); |
mbed_official | 52:a51c77007319 | 699 | RxMessage->Data[6] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDHR >> 16); |
mbed_official | 52:a51c77007319 | 700 | RxMessage->Data[7] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDHR >> 24); |
mbed_official | 52:a51c77007319 | 701 | /* Release the FIFO */ |
mbed_official | 52:a51c77007319 | 702 | /* Release FIFO0 */ |
mbed_official | 52:a51c77007319 | 703 | if (FIFONumber == CAN_FIFO0) |
mbed_official | 52:a51c77007319 | 704 | { |
mbed_official | 52:a51c77007319 | 705 | CANx->RF0R |= CAN_RF0R_RFOM0; |
mbed_official | 52:a51c77007319 | 706 | } |
mbed_official | 52:a51c77007319 | 707 | /* Release FIFO1 */ |
mbed_official | 52:a51c77007319 | 708 | else /* FIFONumber == CAN_FIFO1 */ |
mbed_official | 52:a51c77007319 | 709 | { |
mbed_official | 52:a51c77007319 | 710 | CANx->RF1R |= CAN_RF1R_RFOM1; |
mbed_official | 52:a51c77007319 | 711 | } |
mbed_official | 52:a51c77007319 | 712 | } |
mbed_official | 52:a51c77007319 | 713 | |
mbed_official | 52:a51c77007319 | 714 | /** |
mbed_official | 52:a51c77007319 | 715 | * @brief Releases the specified FIFO. |
mbed_official | 52:a51c77007319 | 716 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 717 | * @param FIFONumber: FIFO to release, CAN_FIFO0 or CAN_FIFO1. |
mbed_official | 52:a51c77007319 | 718 | * @retval None. |
mbed_official | 52:a51c77007319 | 719 | */ |
mbed_official | 52:a51c77007319 | 720 | void CAN_FIFORelease(CAN_TypeDef* CANx, uint8_t FIFONumber) |
mbed_official | 52:a51c77007319 | 721 | { |
mbed_official | 52:a51c77007319 | 722 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 723 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 724 | assert_param(IS_CAN_FIFO(FIFONumber)); |
mbed_official | 52:a51c77007319 | 725 | /* Release FIFO0 */ |
mbed_official | 52:a51c77007319 | 726 | if (FIFONumber == CAN_FIFO0) |
mbed_official | 52:a51c77007319 | 727 | { |
mbed_official | 52:a51c77007319 | 728 | CANx->RF0R |= CAN_RF0R_RFOM0; |
mbed_official | 52:a51c77007319 | 729 | } |
mbed_official | 52:a51c77007319 | 730 | /* Release FIFO1 */ |
mbed_official | 52:a51c77007319 | 731 | else /* FIFONumber == CAN_FIFO1 */ |
mbed_official | 52:a51c77007319 | 732 | { |
mbed_official | 52:a51c77007319 | 733 | CANx->RF1R |= CAN_RF1R_RFOM1; |
mbed_official | 52:a51c77007319 | 734 | } |
mbed_official | 52:a51c77007319 | 735 | } |
mbed_official | 52:a51c77007319 | 736 | |
mbed_official | 52:a51c77007319 | 737 | /** |
mbed_official | 52:a51c77007319 | 738 | * @brief Returns the number of pending messages. |
mbed_official | 52:a51c77007319 | 739 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 740 | * @param FIFONumber: Receive FIFO number, CAN_FIFO0 or CAN_FIFO1. |
mbed_official | 52:a51c77007319 | 741 | * @retval NbMessage : which is the number of pending message. |
mbed_official | 52:a51c77007319 | 742 | */ |
mbed_official | 52:a51c77007319 | 743 | uint8_t CAN_MessagePending(CAN_TypeDef* CANx, uint8_t FIFONumber) |
mbed_official | 52:a51c77007319 | 744 | { |
mbed_official | 52:a51c77007319 | 745 | uint8_t message_pending=0; |
mbed_official | 52:a51c77007319 | 746 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 747 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 748 | assert_param(IS_CAN_FIFO(FIFONumber)); |
mbed_official | 52:a51c77007319 | 749 | if (FIFONumber == CAN_FIFO0) |
mbed_official | 52:a51c77007319 | 750 | { |
mbed_official | 52:a51c77007319 | 751 | message_pending = (uint8_t)(CANx->RF0R&(uint32_t)0x03); |
mbed_official | 52:a51c77007319 | 752 | } |
mbed_official | 52:a51c77007319 | 753 | else if (FIFONumber == CAN_FIFO1) |
mbed_official | 52:a51c77007319 | 754 | { |
mbed_official | 52:a51c77007319 | 755 | message_pending = (uint8_t)(CANx->RF1R&(uint32_t)0x03); |
mbed_official | 52:a51c77007319 | 756 | } |
mbed_official | 52:a51c77007319 | 757 | else |
mbed_official | 52:a51c77007319 | 758 | { |
mbed_official | 52:a51c77007319 | 759 | message_pending = 0; |
mbed_official | 52:a51c77007319 | 760 | } |
mbed_official | 52:a51c77007319 | 761 | return message_pending; |
mbed_official | 52:a51c77007319 | 762 | } |
mbed_official | 52:a51c77007319 | 763 | |
mbed_official | 52:a51c77007319 | 764 | |
mbed_official | 52:a51c77007319 | 765 | /** |
mbed_official | 52:a51c77007319 | 766 | * @brief Select the CAN Operation mode. |
mbed_official | 52:a51c77007319 | 767 | * @param CAN_OperatingMode : CAN Operating Mode. This parameter can be one |
mbed_official | 52:a51c77007319 | 768 | * of @ref CAN_OperatingMode_TypeDef enumeration. |
mbed_official | 52:a51c77007319 | 769 | * @retval status of the requested mode which can be |
mbed_official | 52:a51c77007319 | 770 | * - CAN_ModeStatus_Failed CAN failed entering the specific mode |
mbed_official | 52:a51c77007319 | 771 | * - CAN_ModeStatus_Success CAN Succeed entering the specific mode |
mbed_official | 52:a51c77007319 | 772 | |
mbed_official | 52:a51c77007319 | 773 | */ |
mbed_official | 52:a51c77007319 | 774 | uint8_t CAN_OperatingModeRequest(CAN_TypeDef* CANx, uint8_t CAN_OperatingMode) |
mbed_official | 52:a51c77007319 | 775 | { |
mbed_official | 52:a51c77007319 | 776 | uint8_t status = CAN_ModeStatus_Failed; |
mbed_official | 52:a51c77007319 | 777 | |
mbed_official | 52:a51c77007319 | 778 | /* Timeout for INAK or also for SLAK bits*/ |
mbed_official | 52:a51c77007319 | 779 | uint32_t timeout = INAK_TIMEOUT; |
mbed_official | 52:a51c77007319 | 780 | |
mbed_official | 52:a51c77007319 | 781 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 782 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 783 | assert_param(IS_CAN_OPERATING_MODE(CAN_OperatingMode)); |
mbed_official | 52:a51c77007319 | 784 | |
mbed_official | 52:a51c77007319 | 785 | if (CAN_OperatingMode == CAN_OperatingMode_Initialization) |
mbed_official | 52:a51c77007319 | 786 | { |
mbed_official | 52:a51c77007319 | 787 | /* Request initialisation */ |
mbed_official | 52:a51c77007319 | 788 | CANx->MCR = (uint32_t)((CANx->MCR & (uint32_t)(~(uint32_t)CAN_MCR_SLEEP)) | CAN_MCR_INRQ); |
mbed_official | 52:a51c77007319 | 789 | |
mbed_official | 52:a51c77007319 | 790 | /* Wait the acknowledge */ |
mbed_official | 52:a51c77007319 | 791 | while (((CANx->MSR & CAN_MODE_MASK) != CAN_MSR_INAK) && (timeout != 0)) |
mbed_official | 52:a51c77007319 | 792 | { |
mbed_official | 52:a51c77007319 | 793 | timeout--; |
mbed_official | 52:a51c77007319 | 794 | } |
mbed_official | 52:a51c77007319 | 795 | if ((CANx->MSR & CAN_MODE_MASK) != CAN_MSR_INAK) |
mbed_official | 52:a51c77007319 | 796 | { |
mbed_official | 52:a51c77007319 | 797 | status = CAN_ModeStatus_Failed; |
mbed_official | 52:a51c77007319 | 798 | } |
mbed_official | 52:a51c77007319 | 799 | else |
mbed_official | 52:a51c77007319 | 800 | { |
mbed_official | 52:a51c77007319 | 801 | status = CAN_ModeStatus_Success; |
mbed_official | 52:a51c77007319 | 802 | } |
mbed_official | 52:a51c77007319 | 803 | } |
mbed_official | 52:a51c77007319 | 804 | else if (CAN_OperatingMode == CAN_OperatingMode_Normal) |
mbed_official | 52:a51c77007319 | 805 | { |
mbed_official | 52:a51c77007319 | 806 | /* Request leave initialisation and sleep mode and enter Normal mode */ |
mbed_official | 52:a51c77007319 | 807 | CANx->MCR &= (uint32_t)(~(CAN_MCR_SLEEP|CAN_MCR_INRQ)); |
mbed_official | 52:a51c77007319 | 808 | |
mbed_official | 52:a51c77007319 | 809 | /* Wait the acknowledge */ |
mbed_official | 52:a51c77007319 | 810 | while (((CANx->MSR & CAN_MODE_MASK) != 0) && (timeout!=0)) |
mbed_official | 52:a51c77007319 | 811 | { |
mbed_official | 52:a51c77007319 | 812 | timeout--; |
mbed_official | 52:a51c77007319 | 813 | } |
mbed_official | 52:a51c77007319 | 814 | if ((CANx->MSR & CAN_MODE_MASK) != 0) |
mbed_official | 52:a51c77007319 | 815 | { |
mbed_official | 52:a51c77007319 | 816 | status = CAN_ModeStatus_Failed; |
mbed_official | 52:a51c77007319 | 817 | } |
mbed_official | 52:a51c77007319 | 818 | else |
mbed_official | 52:a51c77007319 | 819 | { |
mbed_official | 52:a51c77007319 | 820 | status = CAN_ModeStatus_Success; |
mbed_official | 52:a51c77007319 | 821 | } |
mbed_official | 52:a51c77007319 | 822 | } |
mbed_official | 52:a51c77007319 | 823 | else if (CAN_OperatingMode == CAN_OperatingMode_Sleep) |
mbed_official | 52:a51c77007319 | 824 | { |
mbed_official | 52:a51c77007319 | 825 | /* Request Sleep mode */ |
mbed_official | 52:a51c77007319 | 826 | CANx->MCR = (uint32_t)((CANx->MCR & (uint32_t)(~(uint32_t)CAN_MCR_INRQ)) | CAN_MCR_SLEEP); |
mbed_official | 52:a51c77007319 | 827 | |
mbed_official | 52:a51c77007319 | 828 | /* Wait the acknowledge */ |
mbed_official | 52:a51c77007319 | 829 | while (((CANx->MSR & CAN_MODE_MASK) != CAN_MSR_SLAK) && (timeout!=0)) |
mbed_official | 52:a51c77007319 | 830 | { |
mbed_official | 52:a51c77007319 | 831 | timeout--; |
mbed_official | 52:a51c77007319 | 832 | } |
mbed_official | 52:a51c77007319 | 833 | if ((CANx->MSR & CAN_MODE_MASK) != CAN_MSR_SLAK) |
mbed_official | 52:a51c77007319 | 834 | { |
mbed_official | 52:a51c77007319 | 835 | status = CAN_ModeStatus_Failed; |
mbed_official | 52:a51c77007319 | 836 | } |
mbed_official | 52:a51c77007319 | 837 | else |
mbed_official | 52:a51c77007319 | 838 | { |
mbed_official | 52:a51c77007319 | 839 | status = CAN_ModeStatus_Success; |
mbed_official | 52:a51c77007319 | 840 | } |
mbed_official | 52:a51c77007319 | 841 | } |
mbed_official | 52:a51c77007319 | 842 | else |
mbed_official | 52:a51c77007319 | 843 | { |
mbed_official | 52:a51c77007319 | 844 | status = CAN_ModeStatus_Failed; |
mbed_official | 52:a51c77007319 | 845 | } |
mbed_official | 52:a51c77007319 | 846 | |
mbed_official | 52:a51c77007319 | 847 | return (uint8_t) status; |
mbed_official | 52:a51c77007319 | 848 | } |
mbed_official | 52:a51c77007319 | 849 | |
mbed_official | 52:a51c77007319 | 850 | /** |
mbed_official | 52:a51c77007319 | 851 | * @brief Enters the low power mode. |
mbed_official | 52:a51c77007319 | 852 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 853 | * @retval status: CAN_Sleep_Ok if sleep entered, CAN_Sleep_Failed in an |
mbed_official | 52:a51c77007319 | 854 | * other case. |
mbed_official | 52:a51c77007319 | 855 | */ |
mbed_official | 52:a51c77007319 | 856 | uint8_t CAN_Sleep(CAN_TypeDef* CANx) |
mbed_official | 52:a51c77007319 | 857 | { |
mbed_official | 52:a51c77007319 | 858 | uint8_t sleepstatus = CAN_Sleep_Failed; |
mbed_official | 52:a51c77007319 | 859 | |
mbed_official | 52:a51c77007319 | 860 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 861 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 862 | |
mbed_official | 52:a51c77007319 | 863 | /* Request Sleep mode */ |
mbed_official | 52:a51c77007319 | 864 | CANx->MCR = (((CANx->MCR) & (uint32_t)(~(uint32_t)CAN_MCR_INRQ)) | CAN_MCR_SLEEP); |
mbed_official | 52:a51c77007319 | 865 | |
mbed_official | 52:a51c77007319 | 866 | /* Sleep mode status */ |
mbed_official | 52:a51c77007319 | 867 | if ((CANx->MSR & (CAN_MSR_SLAK|CAN_MSR_INAK)) == CAN_MSR_SLAK) |
mbed_official | 52:a51c77007319 | 868 | { |
mbed_official | 52:a51c77007319 | 869 | /* Sleep mode not entered */ |
mbed_official | 52:a51c77007319 | 870 | sleepstatus = CAN_Sleep_Ok; |
mbed_official | 52:a51c77007319 | 871 | } |
mbed_official | 52:a51c77007319 | 872 | /* return sleep mode status */ |
mbed_official | 52:a51c77007319 | 873 | return (uint8_t)sleepstatus; |
mbed_official | 52:a51c77007319 | 874 | } |
mbed_official | 52:a51c77007319 | 875 | |
mbed_official | 52:a51c77007319 | 876 | /** |
mbed_official | 52:a51c77007319 | 877 | * @brief Wakes the CAN up. |
mbed_official | 52:a51c77007319 | 878 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 879 | * @retval status: CAN_WakeUp_Ok if sleep mode left, CAN_WakeUp_Failed in an |
mbed_official | 52:a51c77007319 | 880 | * other case. |
mbed_official | 52:a51c77007319 | 881 | */ |
mbed_official | 52:a51c77007319 | 882 | uint8_t CAN_WakeUp(CAN_TypeDef* CANx) |
mbed_official | 52:a51c77007319 | 883 | { |
mbed_official | 52:a51c77007319 | 884 | uint32_t wait_slak = SLAK_TIMEOUT; |
mbed_official | 52:a51c77007319 | 885 | uint8_t wakeupstatus = CAN_WakeUp_Failed; |
mbed_official | 52:a51c77007319 | 886 | |
mbed_official | 52:a51c77007319 | 887 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 888 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 889 | |
mbed_official | 52:a51c77007319 | 890 | /* Wake up request */ |
mbed_official | 52:a51c77007319 | 891 | CANx->MCR &= ~(uint32_t)CAN_MCR_SLEEP; |
mbed_official | 52:a51c77007319 | 892 | |
mbed_official | 52:a51c77007319 | 893 | /* Sleep mode status */ |
mbed_official | 52:a51c77007319 | 894 | while(((CANx->MSR & CAN_MSR_SLAK) == CAN_MSR_SLAK)&&(wait_slak!=0x00)) |
mbed_official | 52:a51c77007319 | 895 | { |
mbed_official | 52:a51c77007319 | 896 | wait_slak--; |
mbed_official | 52:a51c77007319 | 897 | } |
mbed_official | 52:a51c77007319 | 898 | if((CANx->MSR & CAN_MSR_SLAK) != CAN_MSR_SLAK) |
mbed_official | 52:a51c77007319 | 899 | { |
mbed_official | 52:a51c77007319 | 900 | /* wake up done : Sleep mode exited */ |
mbed_official | 52:a51c77007319 | 901 | wakeupstatus = CAN_WakeUp_Ok; |
mbed_official | 52:a51c77007319 | 902 | } |
mbed_official | 52:a51c77007319 | 903 | /* return wakeup status */ |
mbed_official | 52:a51c77007319 | 904 | return (uint8_t)wakeupstatus; |
mbed_official | 52:a51c77007319 | 905 | } |
mbed_official | 52:a51c77007319 | 906 | |
mbed_official | 52:a51c77007319 | 907 | |
mbed_official | 52:a51c77007319 | 908 | /** |
mbed_official | 52:a51c77007319 | 909 | * @brief Returns the CANx's last error code (LEC). |
mbed_official | 52:a51c77007319 | 910 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 911 | * @retval CAN_ErrorCode: specifies the Error code : |
mbed_official | 52:a51c77007319 | 912 | * - CAN_ERRORCODE_NoErr No Error |
mbed_official | 52:a51c77007319 | 913 | * - CAN_ERRORCODE_StuffErr Stuff Error |
mbed_official | 52:a51c77007319 | 914 | * - CAN_ERRORCODE_FormErr Form Error |
mbed_official | 52:a51c77007319 | 915 | * - CAN_ERRORCODE_ACKErr Acknowledgment Error |
mbed_official | 52:a51c77007319 | 916 | * - CAN_ERRORCODE_BitRecessiveErr Bit Recessive Error |
mbed_official | 52:a51c77007319 | 917 | * - CAN_ERRORCODE_BitDominantErr Bit Dominant Error |
mbed_official | 52:a51c77007319 | 918 | * - CAN_ERRORCODE_CRCErr CRC Error |
mbed_official | 52:a51c77007319 | 919 | * - CAN_ERRORCODE_SoftwareSetErr Software Set Error |
mbed_official | 52:a51c77007319 | 920 | */ |
mbed_official | 52:a51c77007319 | 921 | |
mbed_official | 52:a51c77007319 | 922 | uint8_t CAN_GetLastErrorCode(CAN_TypeDef* CANx) |
mbed_official | 52:a51c77007319 | 923 | { |
mbed_official | 52:a51c77007319 | 924 | uint8_t errorcode=0; |
mbed_official | 52:a51c77007319 | 925 | |
mbed_official | 52:a51c77007319 | 926 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 927 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 928 | |
mbed_official | 52:a51c77007319 | 929 | /* Get the error code*/ |
mbed_official | 52:a51c77007319 | 930 | errorcode = (((uint8_t)CANx->ESR) & (uint8_t)CAN_ESR_LEC); |
mbed_official | 52:a51c77007319 | 931 | |
mbed_official | 52:a51c77007319 | 932 | /* Return the error code*/ |
mbed_official | 52:a51c77007319 | 933 | return errorcode; |
mbed_official | 52:a51c77007319 | 934 | } |
mbed_official | 52:a51c77007319 | 935 | /** |
mbed_official | 52:a51c77007319 | 936 | * @brief Returns the CANx Receive Error Counter (REC). |
mbed_official | 52:a51c77007319 | 937 | * @note In case of an error during reception, this counter is incremented |
mbed_official | 52:a51c77007319 | 938 | * by 1 or by 8 depending on the error condition as defined by the CAN |
mbed_official | 52:a51c77007319 | 939 | * standard. After every successful reception, the counter is |
mbed_official | 52:a51c77007319 | 940 | * decremented by 1 or reset to 120 if its value was higher than 128. |
mbed_official | 52:a51c77007319 | 941 | * When the counter value exceeds 127, the CAN controller enters the |
mbed_official | 52:a51c77007319 | 942 | * error passive state. |
mbed_official | 52:a51c77007319 | 943 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 944 | * @retval CAN Receive Error Counter. |
mbed_official | 52:a51c77007319 | 945 | */ |
mbed_official | 52:a51c77007319 | 946 | uint8_t CAN_GetReceiveErrorCounter(CAN_TypeDef* CANx) |
mbed_official | 52:a51c77007319 | 947 | { |
mbed_official | 52:a51c77007319 | 948 | uint8_t counter=0; |
mbed_official | 52:a51c77007319 | 949 | |
mbed_official | 52:a51c77007319 | 950 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 951 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 952 | |
mbed_official | 52:a51c77007319 | 953 | /* Get the Receive Error Counter*/ |
mbed_official | 52:a51c77007319 | 954 | counter = (uint8_t)((CANx->ESR & CAN_ESR_REC)>> 24); |
mbed_official | 52:a51c77007319 | 955 | |
mbed_official | 52:a51c77007319 | 956 | /* Return the Receive Error Counter*/ |
mbed_official | 52:a51c77007319 | 957 | return counter; |
mbed_official | 52:a51c77007319 | 958 | } |
mbed_official | 52:a51c77007319 | 959 | |
mbed_official | 52:a51c77007319 | 960 | |
mbed_official | 52:a51c77007319 | 961 | /** |
mbed_official | 52:a51c77007319 | 962 | * @brief Returns the LSB of the 9-bit CANx Transmit Error Counter(TEC). |
mbed_official | 52:a51c77007319 | 963 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 964 | * @retval LSB of the 9-bit CAN Transmit Error Counter. |
mbed_official | 52:a51c77007319 | 965 | */ |
mbed_official | 52:a51c77007319 | 966 | uint8_t CAN_GetLSBTransmitErrorCounter(CAN_TypeDef* CANx) |
mbed_official | 52:a51c77007319 | 967 | { |
mbed_official | 52:a51c77007319 | 968 | uint8_t counter=0; |
mbed_official | 52:a51c77007319 | 969 | |
mbed_official | 52:a51c77007319 | 970 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 971 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 972 | |
mbed_official | 52:a51c77007319 | 973 | /* Get the LSB of the 9-bit CANx Transmit Error Counter(TEC) */ |
mbed_official | 52:a51c77007319 | 974 | counter = (uint8_t)((CANx->ESR & CAN_ESR_TEC)>> 16); |
mbed_official | 52:a51c77007319 | 975 | |
mbed_official | 52:a51c77007319 | 976 | /* Return the LSB of the 9-bit CANx Transmit Error Counter(TEC) */ |
mbed_official | 52:a51c77007319 | 977 | return counter; |
mbed_official | 52:a51c77007319 | 978 | } |
mbed_official | 52:a51c77007319 | 979 | |
mbed_official | 52:a51c77007319 | 980 | |
mbed_official | 52:a51c77007319 | 981 | /** |
mbed_official | 52:a51c77007319 | 982 | * @brief Enables or disables the specified CANx interrupts. |
mbed_official | 52:a51c77007319 | 983 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 984 | * @param CAN_IT: specifies the CAN interrupt sources to be enabled or disabled. |
mbed_official | 52:a51c77007319 | 985 | * This parameter can be: |
mbed_official | 52:a51c77007319 | 986 | * - CAN_IT_TME, |
mbed_official | 52:a51c77007319 | 987 | * - CAN_IT_FMP0, |
mbed_official | 52:a51c77007319 | 988 | * - CAN_IT_FF0, |
mbed_official | 52:a51c77007319 | 989 | * - CAN_IT_FOV0, |
mbed_official | 52:a51c77007319 | 990 | * - CAN_IT_FMP1, |
mbed_official | 52:a51c77007319 | 991 | * - CAN_IT_FF1, |
mbed_official | 52:a51c77007319 | 992 | * - CAN_IT_FOV1, |
mbed_official | 52:a51c77007319 | 993 | * - CAN_IT_EWG, |
mbed_official | 52:a51c77007319 | 994 | * - CAN_IT_EPV, |
mbed_official | 52:a51c77007319 | 995 | * - CAN_IT_LEC, |
mbed_official | 52:a51c77007319 | 996 | * - CAN_IT_ERR, |
mbed_official | 52:a51c77007319 | 997 | * - CAN_IT_WKU or |
mbed_official | 52:a51c77007319 | 998 | * - CAN_IT_SLK. |
mbed_official | 52:a51c77007319 | 999 | * @param NewState: new state of the CAN interrupts. |
mbed_official | 52:a51c77007319 | 1000 | * This parameter can be: ENABLE or DISABLE. |
mbed_official | 52:a51c77007319 | 1001 | * @retval None. |
mbed_official | 52:a51c77007319 | 1002 | */ |
mbed_official | 52:a51c77007319 | 1003 | void CAN_ITConfig(CAN_TypeDef* CANx, uint32_t CAN_IT, FunctionalState NewState) |
mbed_official | 52:a51c77007319 | 1004 | { |
mbed_official | 52:a51c77007319 | 1005 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 1006 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 1007 | assert_param(IS_CAN_IT(CAN_IT)); |
mbed_official | 52:a51c77007319 | 1008 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 52:a51c77007319 | 1009 | |
mbed_official | 52:a51c77007319 | 1010 | if (NewState != DISABLE) |
mbed_official | 52:a51c77007319 | 1011 | { |
mbed_official | 52:a51c77007319 | 1012 | /* Enable the selected CANx interrupt */ |
mbed_official | 52:a51c77007319 | 1013 | CANx->IER |= CAN_IT; |
mbed_official | 52:a51c77007319 | 1014 | } |
mbed_official | 52:a51c77007319 | 1015 | else |
mbed_official | 52:a51c77007319 | 1016 | { |
mbed_official | 52:a51c77007319 | 1017 | /* Disable the selected CANx interrupt */ |
mbed_official | 52:a51c77007319 | 1018 | CANx->IER &= ~CAN_IT; |
mbed_official | 52:a51c77007319 | 1019 | } |
mbed_official | 52:a51c77007319 | 1020 | } |
mbed_official | 52:a51c77007319 | 1021 | /** |
mbed_official | 52:a51c77007319 | 1022 | * @brief Checks whether the specified CAN flag is set or not. |
mbed_official | 52:a51c77007319 | 1023 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 1024 | * @param CAN_FLAG: specifies the flag to check. |
mbed_official | 52:a51c77007319 | 1025 | * This parameter can be one of the following flags: |
mbed_official | 52:a51c77007319 | 1026 | * - CAN_FLAG_EWG |
mbed_official | 52:a51c77007319 | 1027 | * - CAN_FLAG_EPV |
mbed_official | 52:a51c77007319 | 1028 | * - CAN_FLAG_BOF |
mbed_official | 52:a51c77007319 | 1029 | * - CAN_FLAG_RQCP0 |
mbed_official | 52:a51c77007319 | 1030 | * - CAN_FLAG_RQCP1 |
mbed_official | 52:a51c77007319 | 1031 | * - CAN_FLAG_RQCP2 |
mbed_official | 52:a51c77007319 | 1032 | * - CAN_FLAG_FMP1 |
mbed_official | 52:a51c77007319 | 1033 | * - CAN_FLAG_FF1 |
mbed_official | 52:a51c77007319 | 1034 | * - CAN_FLAG_FOV1 |
mbed_official | 52:a51c77007319 | 1035 | * - CAN_FLAG_FMP0 |
mbed_official | 52:a51c77007319 | 1036 | * - CAN_FLAG_FF0 |
mbed_official | 52:a51c77007319 | 1037 | * - CAN_FLAG_FOV0 |
mbed_official | 52:a51c77007319 | 1038 | * - CAN_FLAG_WKU |
mbed_official | 52:a51c77007319 | 1039 | * - CAN_FLAG_SLAK |
mbed_official | 52:a51c77007319 | 1040 | * - CAN_FLAG_LEC |
mbed_official | 52:a51c77007319 | 1041 | * @retval The new state of CAN_FLAG (SET or RESET). |
mbed_official | 52:a51c77007319 | 1042 | */ |
mbed_official | 52:a51c77007319 | 1043 | FlagStatus CAN_GetFlagStatus(CAN_TypeDef* CANx, uint32_t CAN_FLAG) |
mbed_official | 52:a51c77007319 | 1044 | { |
mbed_official | 52:a51c77007319 | 1045 | FlagStatus bitstatus = RESET; |
mbed_official | 52:a51c77007319 | 1046 | |
mbed_official | 52:a51c77007319 | 1047 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 1048 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 1049 | assert_param(IS_CAN_GET_FLAG(CAN_FLAG)); |
mbed_official | 52:a51c77007319 | 1050 | |
mbed_official | 52:a51c77007319 | 1051 | |
mbed_official | 52:a51c77007319 | 1052 | if((CAN_FLAG & CAN_FLAGS_ESR) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1053 | { |
mbed_official | 52:a51c77007319 | 1054 | /* Check the status of the specified CAN flag */ |
mbed_official | 52:a51c77007319 | 1055 | if ((CANx->ESR & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1056 | { |
mbed_official | 52:a51c77007319 | 1057 | /* CAN_FLAG is set */ |
mbed_official | 52:a51c77007319 | 1058 | bitstatus = SET; |
mbed_official | 52:a51c77007319 | 1059 | } |
mbed_official | 52:a51c77007319 | 1060 | else |
mbed_official | 52:a51c77007319 | 1061 | { |
mbed_official | 52:a51c77007319 | 1062 | /* CAN_FLAG is reset */ |
mbed_official | 52:a51c77007319 | 1063 | bitstatus = RESET; |
mbed_official | 52:a51c77007319 | 1064 | } |
mbed_official | 52:a51c77007319 | 1065 | } |
mbed_official | 52:a51c77007319 | 1066 | else if((CAN_FLAG & CAN_FLAGS_MSR) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1067 | { |
mbed_official | 52:a51c77007319 | 1068 | /* Check the status of the specified CAN flag */ |
mbed_official | 52:a51c77007319 | 1069 | if ((CANx->MSR & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1070 | { |
mbed_official | 52:a51c77007319 | 1071 | /* CAN_FLAG is set */ |
mbed_official | 52:a51c77007319 | 1072 | bitstatus = SET; |
mbed_official | 52:a51c77007319 | 1073 | } |
mbed_official | 52:a51c77007319 | 1074 | else |
mbed_official | 52:a51c77007319 | 1075 | { |
mbed_official | 52:a51c77007319 | 1076 | /* CAN_FLAG is reset */ |
mbed_official | 52:a51c77007319 | 1077 | bitstatus = RESET; |
mbed_official | 52:a51c77007319 | 1078 | } |
mbed_official | 52:a51c77007319 | 1079 | } |
mbed_official | 52:a51c77007319 | 1080 | else if((CAN_FLAG & CAN_FLAGS_TSR) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1081 | { |
mbed_official | 52:a51c77007319 | 1082 | /* Check the status of the specified CAN flag */ |
mbed_official | 52:a51c77007319 | 1083 | if ((CANx->TSR & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1084 | { |
mbed_official | 52:a51c77007319 | 1085 | /* CAN_FLAG is set */ |
mbed_official | 52:a51c77007319 | 1086 | bitstatus = SET; |
mbed_official | 52:a51c77007319 | 1087 | } |
mbed_official | 52:a51c77007319 | 1088 | else |
mbed_official | 52:a51c77007319 | 1089 | { |
mbed_official | 52:a51c77007319 | 1090 | /* CAN_FLAG is reset */ |
mbed_official | 52:a51c77007319 | 1091 | bitstatus = RESET; |
mbed_official | 52:a51c77007319 | 1092 | } |
mbed_official | 52:a51c77007319 | 1093 | } |
mbed_official | 52:a51c77007319 | 1094 | else if((CAN_FLAG & CAN_FLAGS_RF0R) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1095 | { |
mbed_official | 52:a51c77007319 | 1096 | /* Check the status of the specified CAN flag */ |
mbed_official | 52:a51c77007319 | 1097 | if ((CANx->RF0R & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1098 | { |
mbed_official | 52:a51c77007319 | 1099 | /* CAN_FLAG is set */ |
mbed_official | 52:a51c77007319 | 1100 | bitstatus = SET; |
mbed_official | 52:a51c77007319 | 1101 | } |
mbed_official | 52:a51c77007319 | 1102 | else |
mbed_official | 52:a51c77007319 | 1103 | { |
mbed_official | 52:a51c77007319 | 1104 | /* CAN_FLAG is reset */ |
mbed_official | 52:a51c77007319 | 1105 | bitstatus = RESET; |
mbed_official | 52:a51c77007319 | 1106 | } |
mbed_official | 52:a51c77007319 | 1107 | } |
mbed_official | 52:a51c77007319 | 1108 | else /* If(CAN_FLAG & CAN_FLAGS_RF1R != (uint32_t)RESET) */ |
mbed_official | 52:a51c77007319 | 1109 | { |
mbed_official | 52:a51c77007319 | 1110 | /* Check the status of the specified CAN flag */ |
mbed_official | 52:a51c77007319 | 1111 | if ((uint32_t)(CANx->RF1R & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1112 | { |
mbed_official | 52:a51c77007319 | 1113 | /* CAN_FLAG is set */ |
mbed_official | 52:a51c77007319 | 1114 | bitstatus = SET; |
mbed_official | 52:a51c77007319 | 1115 | } |
mbed_official | 52:a51c77007319 | 1116 | else |
mbed_official | 52:a51c77007319 | 1117 | { |
mbed_official | 52:a51c77007319 | 1118 | /* CAN_FLAG is reset */ |
mbed_official | 52:a51c77007319 | 1119 | bitstatus = RESET; |
mbed_official | 52:a51c77007319 | 1120 | } |
mbed_official | 52:a51c77007319 | 1121 | } |
mbed_official | 52:a51c77007319 | 1122 | /* Return the CAN_FLAG status */ |
mbed_official | 52:a51c77007319 | 1123 | return bitstatus; |
mbed_official | 52:a51c77007319 | 1124 | } |
mbed_official | 52:a51c77007319 | 1125 | |
mbed_official | 52:a51c77007319 | 1126 | /** |
mbed_official | 52:a51c77007319 | 1127 | * @brief Clears the CAN's pending flags. |
mbed_official | 52:a51c77007319 | 1128 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 1129 | * @param CAN_FLAG: specifies the flag to clear. |
mbed_official | 52:a51c77007319 | 1130 | * This parameter can be one of the following flags: |
mbed_official | 52:a51c77007319 | 1131 | * - CAN_FLAG_RQCP0 |
mbed_official | 52:a51c77007319 | 1132 | * - CAN_FLAG_RQCP1 |
mbed_official | 52:a51c77007319 | 1133 | * - CAN_FLAG_RQCP2 |
mbed_official | 52:a51c77007319 | 1134 | * - CAN_FLAG_FF1 |
mbed_official | 52:a51c77007319 | 1135 | * - CAN_FLAG_FOV1 |
mbed_official | 52:a51c77007319 | 1136 | * - CAN_FLAG_FF0 |
mbed_official | 52:a51c77007319 | 1137 | * - CAN_FLAG_FOV0 |
mbed_official | 52:a51c77007319 | 1138 | * - CAN_FLAG_WKU |
mbed_official | 52:a51c77007319 | 1139 | * - CAN_FLAG_SLAK |
mbed_official | 52:a51c77007319 | 1140 | * - CAN_FLAG_LEC |
mbed_official | 52:a51c77007319 | 1141 | * @retval None. |
mbed_official | 52:a51c77007319 | 1142 | */ |
mbed_official | 52:a51c77007319 | 1143 | void CAN_ClearFlag(CAN_TypeDef* CANx, uint32_t CAN_FLAG) |
mbed_official | 52:a51c77007319 | 1144 | { |
mbed_official | 52:a51c77007319 | 1145 | uint32_t flagtmp=0; |
mbed_official | 52:a51c77007319 | 1146 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 1147 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 1148 | assert_param(IS_CAN_CLEAR_FLAG(CAN_FLAG)); |
mbed_official | 52:a51c77007319 | 1149 | |
mbed_official | 52:a51c77007319 | 1150 | if (CAN_FLAG == CAN_FLAG_LEC) /* ESR register */ |
mbed_official | 52:a51c77007319 | 1151 | { |
mbed_official | 52:a51c77007319 | 1152 | /* Clear the selected CAN flags */ |
mbed_official | 52:a51c77007319 | 1153 | CANx->ESR = (uint32_t)RESET; |
mbed_official | 52:a51c77007319 | 1154 | } |
mbed_official | 52:a51c77007319 | 1155 | else /* MSR or TSR or RF0R or RF1R */ |
mbed_official | 52:a51c77007319 | 1156 | { |
mbed_official | 52:a51c77007319 | 1157 | flagtmp = CAN_FLAG & 0x000FFFFF; |
mbed_official | 52:a51c77007319 | 1158 | |
mbed_official | 52:a51c77007319 | 1159 | if ((CAN_FLAG & CAN_FLAGS_RF0R)!=(uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1160 | { |
mbed_official | 52:a51c77007319 | 1161 | /* Receive Flags */ |
mbed_official | 52:a51c77007319 | 1162 | CANx->RF0R = (uint32_t)(flagtmp); |
mbed_official | 52:a51c77007319 | 1163 | } |
mbed_official | 52:a51c77007319 | 1164 | else if ((CAN_FLAG & CAN_FLAGS_RF1R)!=(uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1165 | { |
mbed_official | 52:a51c77007319 | 1166 | /* Receive Flags */ |
mbed_official | 52:a51c77007319 | 1167 | CANx->RF1R = (uint32_t)(flagtmp); |
mbed_official | 52:a51c77007319 | 1168 | } |
mbed_official | 52:a51c77007319 | 1169 | else if ((CAN_FLAG & CAN_FLAGS_TSR)!=(uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1170 | { |
mbed_official | 52:a51c77007319 | 1171 | /* Transmit Flags */ |
mbed_official | 52:a51c77007319 | 1172 | CANx->TSR = (uint32_t)(flagtmp); |
mbed_official | 52:a51c77007319 | 1173 | } |
mbed_official | 52:a51c77007319 | 1174 | else /* If((CAN_FLAG & CAN_FLAGS_MSR)!=(uint32_t)RESET) */ |
mbed_official | 52:a51c77007319 | 1175 | { |
mbed_official | 52:a51c77007319 | 1176 | /* Operating mode Flags */ |
mbed_official | 52:a51c77007319 | 1177 | CANx->MSR = (uint32_t)(flagtmp); |
mbed_official | 52:a51c77007319 | 1178 | } |
mbed_official | 52:a51c77007319 | 1179 | } |
mbed_official | 52:a51c77007319 | 1180 | } |
mbed_official | 52:a51c77007319 | 1181 | |
mbed_official | 52:a51c77007319 | 1182 | /** |
mbed_official | 52:a51c77007319 | 1183 | * @brief Checks whether the specified CANx interrupt has occurred or not. |
mbed_official | 52:a51c77007319 | 1184 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 1185 | * @param CAN_IT: specifies the CAN interrupt source to check. |
mbed_official | 52:a51c77007319 | 1186 | * This parameter can be one of the following flags: |
mbed_official | 52:a51c77007319 | 1187 | * - CAN_IT_TME |
mbed_official | 52:a51c77007319 | 1188 | * - CAN_IT_FMP0 |
mbed_official | 52:a51c77007319 | 1189 | * - CAN_IT_FF0 |
mbed_official | 52:a51c77007319 | 1190 | * - CAN_IT_FOV0 |
mbed_official | 52:a51c77007319 | 1191 | * - CAN_IT_FMP1 |
mbed_official | 52:a51c77007319 | 1192 | * - CAN_IT_FF1 |
mbed_official | 52:a51c77007319 | 1193 | * - CAN_IT_FOV1 |
mbed_official | 52:a51c77007319 | 1194 | * - CAN_IT_WKU |
mbed_official | 52:a51c77007319 | 1195 | * - CAN_IT_SLK |
mbed_official | 52:a51c77007319 | 1196 | * - CAN_IT_EWG |
mbed_official | 52:a51c77007319 | 1197 | * - CAN_IT_EPV |
mbed_official | 52:a51c77007319 | 1198 | * - CAN_IT_BOF |
mbed_official | 52:a51c77007319 | 1199 | * - CAN_IT_LEC |
mbed_official | 52:a51c77007319 | 1200 | * - CAN_IT_ERR |
mbed_official | 52:a51c77007319 | 1201 | * @retval The current state of CAN_IT (SET or RESET). |
mbed_official | 52:a51c77007319 | 1202 | */ |
mbed_official | 52:a51c77007319 | 1203 | ITStatus CAN_GetITStatus(CAN_TypeDef* CANx, uint32_t CAN_IT) |
mbed_official | 52:a51c77007319 | 1204 | { |
mbed_official | 52:a51c77007319 | 1205 | ITStatus itstatus = RESET; |
mbed_official | 52:a51c77007319 | 1206 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 1207 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 1208 | assert_param(IS_CAN_IT(CAN_IT)); |
mbed_official | 52:a51c77007319 | 1209 | |
mbed_official | 52:a51c77007319 | 1210 | /* check the enable interrupt bit */ |
mbed_official | 52:a51c77007319 | 1211 | if((CANx->IER & CAN_IT) != RESET) |
mbed_official | 52:a51c77007319 | 1212 | { |
mbed_official | 52:a51c77007319 | 1213 | /* in case the Interrupt is enabled, .... */ |
mbed_official | 52:a51c77007319 | 1214 | switch (CAN_IT) |
mbed_official | 52:a51c77007319 | 1215 | { |
mbed_official | 52:a51c77007319 | 1216 | case CAN_IT_TME: |
mbed_official | 52:a51c77007319 | 1217 | /* Check CAN_TSR_RQCPx bits */ |
mbed_official | 52:a51c77007319 | 1218 | itstatus = CheckITStatus(CANx->TSR, CAN_TSR_RQCP0|CAN_TSR_RQCP1|CAN_TSR_RQCP2); |
mbed_official | 52:a51c77007319 | 1219 | break; |
mbed_official | 52:a51c77007319 | 1220 | case CAN_IT_FMP0: |
mbed_official | 52:a51c77007319 | 1221 | /* Check CAN_RF0R_FMP0 bit */ |
mbed_official | 52:a51c77007319 | 1222 | itstatus = CheckITStatus(CANx->RF0R, CAN_RF0R_FMP0); |
mbed_official | 52:a51c77007319 | 1223 | break; |
mbed_official | 52:a51c77007319 | 1224 | case CAN_IT_FF0: |
mbed_official | 52:a51c77007319 | 1225 | /* Check CAN_RF0R_FULL0 bit */ |
mbed_official | 52:a51c77007319 | 1226 | itstatus = CheckITStatus(CANx->RF0R, CAN_RF0R_FULL0); |
mbed_official | 52:a51c77007319 | 1227 | break; |
mbed_official | 52:a51c77007319 | 1228 | case CAN_IT_FOV0: |
mbed_official | 52:a51c77007319 | 1229 | /* Check CAN_RF0R_FOVR0 bit */ |
mbed_official | 52:a51c77007319 | 1230 | itstatus = CheckITStatus(CANx->RF0R, CAN_RF0R_FOVR0); |
mbed_official | 52:a51c77007319 | 1231 | break; |
mbed_official | 52:a51c77007319 | 1232 | case CAN_IT_FMP1: |
mbed_official | 52:a51c77007319 | 1233 | /* Check CAN_RF1R_FMP1 bit */ |
mbed_official | 52:a51c77007319 | 1234 | itstatus = CheckITStatus(CANx->RF1R, CAN_RF1R_FMP1); |
mbed_official | 52:a51c77007319 | 1235 | break; |
mbed_official | 52:a51c77007319 | 1236 | case CAN_IT_FF1: |
mbed_official | 52:a51c77007319 | 1237 | /* Check CAN_RF1R_FULL1 bit */ |
mbed_official | 52:a51c77007319 | 1238 | itstatus = CheckITStatus(CANx->RF1R, CAN_RF1R_FULL1); |
mbed_official | 52:a51c77007319 | 1239 | break; |
mbed_official | 52:a51c77007319 | 1240 | case CAN_IT_FOV1: |
mbed_official | 52:a51c77007319 | 1241 | /* Check CAN_RF1R_FOVR1 bit */ |
mbed_official | 52:a51c77007319 | 1242 | itstatus = CheckITStatus(CANx->RF1R, CAN_RF1R_FOVR1); |
mbed_official | 52:a51c77007319 | 1243 | break; |
mbed_official | 52:a51c77007319 | 1244 | case CAN_IT_WKU: |
mbed_official | 52:a51c77007319 | 1245 | /* Check CAN_MSR_WKUI bit */ |
mbed_official | 52:a51c77007319 | 1246 | itstatus = CheckITStatus(CANx->MSR, CAN_MSR_WKUI); |
mbed_official | 52:a51c77007319 | 1247 | break; |
mbed_official | 52:a51c77007319 | 1248 | case CAN_IT_SLK: |
mbed_official | 52:a51c77007319 | 1249 | /* Check CAN_MSR_SLAKI bit */ |
mbed_official | 52:a51c77007319 | 1250 | itstatus = CheckITStatus(CANx->MSR, CAN_MSR_SLAKI); |
mbed_official | 52:a51c77007319 | 1251 | break; |
mbed_official | 52:a51c77007319 | 1252 | case CAN_IT_EWG: |
mbed_official | 52:a51c77007319 | 1253 | /* Check CAN_ESR_EWGF bit */ |
mbed_official | 52:a51c77007319 | 1254 | itstatus = CheckITStatus(CANx->ESR, CAN_ESR_EWGF); |
mbed_official | 52:a51c77007319 | 1255 | break; |
mbed_official | 52:a51c77007319 | 1256 | case CAN_IT_EPV: |
mbed_official | 52:a51c77007319 | 1257 | /* Check CAN_ESR_EPVF bit */ |
mbed_official | 52:a51c77007319 | 1258 | itstatus = CheckITStatus(CANx->ESR, CAN_ESR_EPVF); |
mbed_official | 52:a51c77007319 | 1259 | break; |
mbed_official | 52:a51c77007319 | 1260 | case CAN_IT_BOF: |
mbed_official | 52:a51c77007319 | 1261 | /* Check CAN_ESR_BOFF bit */ |
mbed_official | 52:a51c77007319 | 1262 | itstatus = CheckITStatus(CANx->ESR, CAN_ESR_BOFF); |
mbed_official | 52:a51c77007319 | 1263 | break; |
mbed_official | 52:a51c77007319 | 1264 | case CAN_IT_LEC: |
mbed_official | 52:a51c77007319 | 1265 | /* Check CAN_ESR_LEC bit */ |
mbed_official | 52:a51c77007319 | 1266 | itstatus = CheckITStatus(CANx->ESR, CAN_ESR_LEC); |
mbed_official | 52:a51c77007319 | 1267 | break; |
mbed_official | 52:a51c77007319 | 1268 | case CAN_IT_ERR: |
mbed_official | 52:a51c77007319 | 1269 | /* Check CAN_MSR_ERRI bit */ |
mbed_official | 52:a51c77007319 | 1270 | itstatus = CheckITStatus(CANx->MSR, CAN_MSR_ERRI); |
mbed_official | 52:a51c77007319 | 1271 | break; |
mbed_official | 52:a51c77007319 | 1272 | default : |
mbed_official | 52:a51c77007319 | 1273 | /* in case of error, return RESET */ |
mbed_official | 52:a51c77007319 | 1274 | itstatus = RESET; |
mbed_official | 52:a51c77007319 | 1275 | break; |
mbed_official | 52:a51c77007319 | 1276 | } |
mbed_official | 52:a51c77007319 | 1277 | } |
mbed_official | 52:a51c77007319 | 1278 | else |
mbed_official | 52:a51c77007319 | 1279 | { |
mbed_official | 52:a51c77007319 | 1280 | /* in case the Interrupt is not enabled, return RESET */ |
mbed_official | 52:a51c77007319 | 1281 | itstatus = RESET; |
mbed_official | 52:a51c77007319 | 1282 | } |
mbed_official | 52:a51c77007319 | 1283 | |
mbed_official | 52:a51c77007319 | 1284 | /* Return the CAN_IT status */ |
mbed_official | 52:a51c77007319 | 1285 | return itstatus; |
mbed_official | 52:a51c77007319 | 1286 | } |
mbed_official | 52:a51c77007319 | 1287 | |
mbed_official | 52:a51c77007319 | 1288 | /** |
mbed_official | 52:a51c77007319 | 1289 | * @brief Clears the CANx's interrupt pending bits. |
mbed_official | 52:a51c77007319 | 1290 | * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. |
mbed_official | 52:a51c77007319 | 1291 | * @param CAN_IT: specifies the interrupt pending bit to clear. |
mbed_official | 52:a51c77007319 | 1292 | * - CAN_IT_TME |
mbed_official | 52:a51c77007319 | 1293 | * - CAN_IT_FF0 |
mbed_official | 52:a51c77007319 | 1294 | * - CAN_IT_FOV0 |
mbed_official | 52:a51c77007319 | 1295 | * - CAN_IT_FF1 |
mbed_official | 52:a51c77007319 | 1296 | * - CAN_IT_FOV1 |
mbed_official | 52:a51c77007319 | 1297 | * - CAN_IT_WKU |
mbed_official | 52:a51c77007319 | 1298 | * - CAN_IT_SLK |
mbed_official | 52:a51c77007319 | 1299 | * - CAN_IT_EWG |
mbed_official | 52:a51c77007319 | 1300 | * - CAN_IT_EPV |
mbed_official | 52:a51c77007319 | 1301 | * - CAN_IT_BOF |
mbed_official | 52:a51c77007319 | 1302 | * - CAN_IT_LEC |
mbed_official | 52:a51c77007319 | 1303 | * - CAN_IT_ERR |
mbed_official | 52:a51c77007319 | 1304 | * @retval None. |
mbed_official | 52:a51c77007319 | 1305 | */ |
mbed_official | 52:a51c77007319 | 1306 | void CAN_ClearITPendingBit(CAN_TypeDef* CANx, uint32_t CAN_IT) |
mbed_official | 52:a51c77007319 | 1307 | { |
mbed_official | 52:a51c77007319 | 1308 | /* Check the parameters */ |
mbed_official | 52:a51c77007319 | 1309 | assert_param(IS_CAN_ALL_PERIPH(CANx)); |
mbed_official | 52:a51c77007319 | 1310 | assert_param(IS_CAN_CLEAR_IT(CAN_IT)); |
mbed_official | 52:a51c77007319 | 1311 | |
mbed_official | 52:a51c77007319 | 1312 | switch (CAN_IT) |
mbed_official | 52:a51c77007319 | 1313 | { |
mbed_official | 52:a51c77007319 | 1314 | case CAN_IT_TME: |
mbed_official | 52:a51c77007319 | 1315 | /* Clear CAN_TSR_RQCPx (rc_w1)*/ |
mbed_official | 52:a51c77007319 | 1316 | CANx->TSR = CAN_TSR_RQCP0|CAN_TSR_RQCP1|CAN_TSR_RQCP2; |
mbed_official | 52:a51c77007319 | 1317 | break; |
mbed_official | 52:a51c77007319 | 1318 | case CAN_IT_FF0: |
mbed_official | 52:a51c77007319 | 1319 | /* Clear CAN_RF0R_FULL0 (rc_w1)*/ |
mbed_official | 52:a51c77007319 | 1320 | CANx->RF0R = CAN_RF0R_FULL0; |
mbed_official | 52:a51c77007319 | 1321 | break; |
mbed_official | 52:a51c77007319 | 1322 | case CAN_IT_FOV0: |
mbed_official | 52:a51c77007319 | 1323 | /* Clear CAN_RF0R_FOVR0 (rc_w1)*/ |
mbed_official | 52:a51c77007319 | 1324 | CANx->RF0R = CAN_RF0R_FOVR0; |
mbed_official | 52:a51c77007319 | 1325 | break; |
mbed_official | 52:a51c77007319 | 1326 | case CAN_IT_FF1: |
mbed_official | 52:a51c77007319 | 1327 | /* Clear CAN_RF1R_FULL1 (rc_w1)*/ |
mbed_official | 52:a51c77007319 | 1328 | CANx->RF1R = CAN_RF1R_FULL1; |
mbed_official | 52:a51c77007319 | 1329 | break; |
mbed_official | 52:a51c77007319 | 1330 | case CAN_IT_FOV1: |
mbed_official | 52:a51c77007319 | 1331 | /* Clear CAN_RF1R_FOVR1 (rc_w1)*/ |
mbed_official | 52:a51c77007319 | 1332 | CANx->RF1R = CAN_RF1R_FOVR1; |
mbed_official | 52:a51c77007319 | 1333 | break; |
mbed_official | 52:a51c77007319 | 1334 | case CAN_IT_WKU: |
mbed_official | 52:a51c77007319 | 1335 | /* Clear CAN_MSR_WKUI (rc_w1)*/ |
mbed_official | 52:a51c77007319 | 1336 | CANx->MSR = CAN_MSR_WKUI; |
mbed_official | 52:a51c77007319 | 1337 | break; |
mbed_official | 52:a51c77007319 | 1338 | case CAN_IT_SLK: |
mbed_official | 52:a51c77007319 | 1339 | /* Clear CAN_MSR_SLAKI (rc_w1)*/ |
mbed_official | 52:a51c77007319 | 1340 | CANx->MSR = CAN_MSR_SLAKI; |
mbed_official | 52:a51c77007319 | 1341 | break; |
mbed_official | 52:a51c77007319 | 1342 | case CAN_IT_EWG: |
mbed_official | 52:a51c77007319 | 1343 | /* Clear CAN_MSR_ERRI (rc_w1) */ |
mbed_official | 52:a51c77007319 | 1344 | CANx->MSR = CAN_MSR_ERRI; |
mbed_official | 52:a51c77007319 | 1345 | /* Note : the corresponding Flag is cleared by hardware depending |
mbed_official | 52:a51c77007319 | 1346 | of the CAN Bus status*/ |
mbed_official | 52:a51c77007319 | 1347 | break; |
mbed_official | 52:a51c77007319 | 1348 | case CAN_IT_EPV: |
mbed_official | 52:a51c77007319 | 1349 | /* Clear CAN_MSR_ERRI (rc_w1) */ |
mbed_official | 52:a51c77007319 | 1350 | CANx->MSR = CAN_MSR_ERRI; |
mbed_official | 52:a51c77007319 | 1351 | /* Note : the corresponding Flag is cleared by hardware depending |
mbed_official | 52:a51c77007319 | 1352 | of the CAN Bus status*/ |
mbed_official | 52:a51c77007319 | 1353 | break; |
mbed_official | 52:a51c77007319 | 1354 | case CAN_IT_BOF: |
mbed_official | 52:a51c77007319 | 1355 | /* Clear CAN_MSR_ERRI (rc_w1) */ |
mbed_official | 52:a51c77007319 | 1356 | CANx->MSR = CAN_MSR_ERRI; |
mbed_official | 52:a51c77007319 | 1357 | /* Note : the corresponding Flag is cleared by hardware depending |
mbed_official | 52:a51c77007319 | 1358 | of the CAN Bus status*/ |
mbed_official | 52:a51c77007319 | 1359 | break; |
mbed_official | 52:a51c77007319 | 1360 | case CAN_IT_LEC: |
mbed_official | 52:a51c77007319 | 1361 | /* Clear LEC bits */ |
mbed_official | 52:a51c77007319 | 1362 | CANx->ESR = RESET; |
mbed_official | 52:a51c77007319 | 1363 | /* Clear CAN_MSR_ERRI (rc_w1) */ |
mbed_official | 52:a51c77007319 | 1364 | CANx->MSR = CAN_MSR_ERRI; |
mbed_official | 52:a51c77007319 | 1365 | break; |
mbed_official | 52:a51c77007319 | 1366 | case CAN_IT_ERR: |
mbed_official | 52:a51c77007319 | 1367 | /*Clear LEC bits */ |
mbed_official | 52:a51c77007319 | 1368 | CANx->ESR = RESET; |
mbed_official | 52:a51c77007319 | 1369 | /* Clear CAN_MSR_ERRI (rc_w1) */ |
mbed_official | 52:a51c77007319 | 1370 | CANx->MSR = CAN_MSR_ERRI; |
mbed_official | 52:a51c77007319 | 1371 | /* Note : BOFF, EPVF and EWGF Flags are cleared by hardware depending |
mbed_official | 52:a51c77007319 | 1372 | of the CAN Bus status*/ |
mbed_official | 52:a51c77007319 | 1373 | break; |
mbed_official | 52:a51c77007319 | 1374 | default : |
mbed_official | 52:a51c77007319 | 1375 | break; |
mbed_official | 52:a51c77007319 | 1376 | } |
mbed_official | 52:a51c77007319 | 1377 | } |
mbed_official | 52:a51c77007319 | 1378 | |
mbed_official | 52:a51c77007319 | 1379 | /** |
mbed_official | 52:a51c77007319 | 1380 | * @brief Checks whether the CAN interrupt has occurred or not. |
mbed_official | 52:a51c77007319 | 1381 | * @param CAN_Reg: specifies the CAN interrupt register to check. |
mbed_official | 52:a51c77007319 | 1382 | * @param It_Bit: specifies the interrupt source bit to check. |
mbed_official | 52:a51c77007319 | 1383 | * @retval The new state of the CAN Interrupt (SET or RESET). |
mbed_official | 52:a51c77007319 | 1384 | */ |
mbed_official | 52:a51c77007319 | 1385 | static ITStatus CheckITStatus(uint32_t CAN_Reg, uint32_t It_Bit) |
mbed_official | 52:a51c77007319 | 1386 | { |
mbed_official | 52:a51c77007319 | 1387 | ITStatus pendingbitstatus = RESET; |
mbed_official | 52:a51c77007319 | 1388 | |
mbed_official | 52:a51c77007319 | 1389 | if ((CAN_Reg & It_Bit) != (uint32_t)RESET) |
mbed_official | 52:a51c77007319 | 1390 | { |
mbed_official | 52:a51c77007319 | 1391 | /* CAN_IT is set */ |
mbed_official | 52:a51c77007319 | 1392 | pendingbitstatus = SET; |
mbed_official | 52:a51c77007319 | 1393 | } |
mbed_official | 52:a51c77007319 | 1394 | else |
mbed_official | 52:a51c77007319 | 1395 | { |
mbed_official | 52:a51c77007319 | 1396 | /* CAN_IT is reset */ |
mbed_official | 52:a51c77007319 | 1397 | pendingbitstatus = RESET; |
mbed_official | 52:a51c77007319 | 1398 | } |
mbed_official | 52:a51c77007319 | 1399 | return pendingbitstatus; |
mbed_official | 52:a51c77007319 | 1400 | } |
mbed_official | 52:a51c77007319 | 1401 | |
mbed_official | 52:a51c77007319 | 1402 | |
mbed_official | 52:a51c77007319 | 1403 | /** |
mbed_official | 52:a51c77007319 | 1404 | * @} |
mbed_official | 52:a51c77007319 | 1405 | */ |
mbed_official | 52:a51c77007319 | 1406 | |
mbed_official | 52:a51c77007319 | 1407 | /** |
mbed_official | 52:a51c77007319 | 1408 | * @} |
mbed_official | 52:a51c77007319 | 1409 | */ |
mbed_official | 52:a51c77007319 | 1410 | |
mbed_official | 52:a51c77007319 | 1411 | /** |
mbed_official | 52:a51c77007319 | 1412 | * @} |
mbed_official | 52:a51c77007319 | 1413 | */ |
mbed_official | 52:a51c77007319 | 1414 | |
mbed_official | 52:a51c77007319 | 1415 | /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |