Frank 26080115
Date: March 20, 2011 This library is created from "LPC17xx CMSIS-Compliant Standard Peripheral Firmware Driver Library (GNU, Keil, IAR) (Jan 28, 2011)", available from NXP's website, under "All microcontrollers support documents" [[http://ics.nxp.com/support/documents/microcontrollers/?type=software]] You will need to follow [[/projects/libraries/svn/mbed/trunk/LPC1768/LPC17xx.h]] while using this library Examples provided here [[/users/frank26080115/programs/LPC1700CMSIS_Examples/]] The beautiful thing is that NXP does not place copyright protection on any of the files in here Only a few modifications are made to make it compile with the mbed online compiler, I fixed some warnings as well. This is untested as of March 20, 2011 Forum post about this library: [[/forum/mbed/topic/2030/]]
lpc17xx_ssp.c@0:84d7747641aa, 2011-03-20 (annotated)
- Committer:
- frank26080115
- Date:
- Sun Mar 20 18:45:15 2011 +0000
- Revision:
- 0:84d7747641aa
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| frank26080115 | 0:84d7747641aa | 1 | /***********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 2 | * @file lpc17xx_ssp.c |
| frank26080115 | 0:84d7747641aa | 3 | * @brief Contains all functions support for SSP firmware library on LPC17xx |
| frank26080115 | 0:84d7747641aa | 4 | * @version 3.0 |
| frank26080115 | 0:84d7747641aa | 5 | * @date 18. June. 2010 |
| frank26080115 | 0:84d7747641aa | 6 | * @author NXP MCU SW Application Team |
| frank26080115 | 0:84d7747641aa | 7 | ************************************************************************** |
| frank26080115 | 0:84d7747641aa | 8 | * Software that is described herein is for illustrative purposes only |
| frank26080115 | 0:84d7747641aa | 9 | * which provides customers with programming information regarding the |
| frank26080115 | 0:84d7747641aa | 10 | * products. This software is supplied "AS IS" without any warranties. |
| frank26080115 | 0:84d7747641aa | 11 | * NXP Semiconductors assumes no responsibility or liability for the |
| frank26080115 | 0:84d7747641aa | 12 | * use of the software, conveys no license or title under any patent, |
| frank26080115 | 0:84d7747641aa | 13 | * copyright, or mask work right to the product. NXP Semiconductors |
| frank26080115 | 0:84d7747641aa | 14 | * reserves the right to make changes in the software without |
| frank26080115 | 0:84d7747641aa | 15 | * notification. NXP Semiconductors also make no representation or |
| frank26080115 | 0:84d7747641aa | 16 | * warranty that such application will be suitable for the specified |
| frank26080115 | 0:84d7747641aa | 17 | * use without further testing or modification. |
| frank26080115 | 0:84d7747641aa | 18 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 19 | |
| frank26080115 | 0:84d7747641aa | 20 | /* Peripheral group ----------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 21 | /** @addtogroup SSP |
| frank26080115 | 0:84d7747641aa | 22 | * @{ |
| frank26080115 | 0:84d7747641aa | 23 | */ |
| frank26080115 | 0:84d7747641aa | 24 | |
| frank26080115 | 0:84d7747641aa | 25 | /* Includes ------------------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 26 | #include "lpc17xx_ssp.h" |
| frank26080115 | 0:84d7747641aa | 27 | #include "lpc17xx_clkpwr.h" |
| frank26080115 | 0:84d7747641aa | 28 | |
| frank26080115 | 0:84d7747641aa | 29 | |
| frank26080115 | 0:84d7747641aa | 30 | /* If this source file built with example, the LPC17xx FW library configuration |
| frank26080115 | 0:84d7747641aa | 31 | * file in each example directory ("lpc17xx_libcfg.h") must be included, |
| frank26080115 | 0:84d7747641aa | 32 | * otherwise the default FW library configuration file must be included instead |
| frank26080115 | 0:84d7747641aa | 33 | */ |
| frank26080115 | 0:84d7747641aa | 34 | #ifdef __BUILD_WITH_EXAMPLE__ |
| frank26080115 | 0:84d7747641aa | 35 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:84d7747641aa | 36 | #else |
| frank26080115 | 0:84d7747641aa | 37 | #include "lpc17xx_libcfg_default.h" |
| frank26080115 | 0:84d7747641aa | 38 | #endif /* __BUILD_WITH_EXAMPLE__ */ |
| frank26080115 | 0:84d7747641aa | 39 | |
| frank26080115 | 0:84d7747641aa | 40 | |
| frank26080115 | 0:84d7747641aa | 41 | #ifdef _SSP |
| frank26080115 | 0:84d7747641aa | 42 | |
| frank26080115 | 0:84d7747641aa | 43 | /* Public Functions ----------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 44 | /** @addtogroup SSP_Public_Functions |
| frank26080115 | 0:84d7747641aa | 45 | * @{ |
| frank26080115 | 0:84d7747641aa | 46 | */ |
| frank26080115 | 0:84d7747641aa | 47 | static void setSSPclock (LPC_SSP_TypeDef *SSPx, uint32_t target_clock); |
| frank26080115 | 0:84d7747641aa | 48 | |
| frank26080115 | 0:84d7747641aa | 49 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 50 | * @brief Setup clock rate for SSP device |
| frank26080115 | 0:84d7747641aa | 51 | * @param[in] SSPx SSP peripheral definition, should be: |
| frank26080115 | 0:84d7747641aa | 52 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 53 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 54 | * @param[in] target_clock : clock of SSP (Hz) |
| frank26080115 | 0:84d7747641aa | 55 | * @return None |
| frank26080115 | 0:84d7747641aa | 56 | ***********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 57 | static void setSSPclock (LPC_SSP_TypeDef *SSPx, uint32_t target_clock) |
| frank26080115 | 0:84d7747641aa | 58 | { |
| frank26080115 | 0:84d7747641aa | 59 | uint32_t prescale, cr0_div, cmp_clk, ssp_clk; |
| frank26080115 | 0:84d7747641aa | 60 | |
| frank26080115 | 0:84d7747641aa | 61 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 62 | |
| frank26080115 | 0:84d7747641aa | 63 | /* The SSP clock is derived from the (main system oscillator / 2), |
| frank26080115 | 0:84d7747641aa | 64 | so compute the best divider from that clock */ |
| frank26080115 | 0:84d7747641aa | 65 | if (SSPx == LPC_SSP0){ |
| frank26080115 | 0:84d7747641aa | 66 | ssp_clk = CLKPWR_GetPCLK (CLKPWR_PCLKSEL_SSP0); |
| frank26080115 | 0:84d7747641aa | 67 | } else if (SSPx == LPC_SSP1) { |
| frank26080115 | 0:84d7747641aa | 68 | ssp_clk = CLKPWR_GetPCLK (CLKPWR_PCLKSEL_SSP1); |
| frank26080115 | 0:84d7747641aa | 69 | } else { |
| frank26080115 | 0:84d7747641aa | 70 | return; |
| frank26080115 | 0:84d7747641aa | 71 | } |
| frank26080115 | 0:84d7747641aa | 72 | |
| frank26080115 | 0:84d7747641aa | 73 | /* Find closest divider to get at or under the target frequency. |
| frank26080115 | 0:84d7747641aa | 74 | Use smallest prescale possible and rely on the divider to get |
| frank26080115 | 0:84d7747641aa | 75 | the closest target frequency */ |
| frank26080115 | 0:84d7747641aa | 76 | cr0_div = 0; |
| frank26080115 | 0:84d7747641aa | 77 | cmp_clk = 0xFFFFFFFF; |
| frank26080115 | 0:84d7747641aa | 78 | prescale = 2; |
| frank26080115 | 0:84d7747641aa | 79 | while (cmp_clk > target_clock) |
| frank26080115 | 0:84d7747641aa | 80 | { |
| frank26080115 | 0:84d7747641aa | 81 | cmp_clk = ssp_clk / ((cr0_div + 1) * prescale); |
| frank26080115 | 0:84d7747641aa | 82 | if (cmp_clk > target_clock) |
| frank26080115 | 0:84d7747641aa | 83 | { |
| frank26080115 | 0:84d7747641aa | 84 | cr0_div++; |
| frank26080115 | 0:84d7747641aa | 85 | if (cr0_div > 0xFF) |
| frank26080115 | 0:84d7747641aa | 86 | { |
| frank26080115 | 0:84d7747641aa | 87 | cr0_div = 0; |
| frank26080115 | 0:84d7747641aa | 88 | prescale += 2; |
| frank26080115 | 0:84d7747641aa | 89 | } |
| frank26080115 | 0:84d7747641aa | 90 | } |
| frank26080115 | 0:84d7747641aa | 91 | } |
| frank26080115 | 0:84d7747641aa | 92 | |
| frank26080115 | 0:84d7747641aa | 93 | /* Write computed prescaler and divider back to register */ |
| frank26080115 | 0:84d7747641aa | 94 | SSPx->CR0 &= (~SSP_CR0_SCR(0xFF)) & SSP_CR0_BITMASK; |
| frank26080115 | 0:84d7747641aa | 95 | SSPx->CR0 |= (SSP_CR0_SCR(cr0_div)) & SSP_CR0_BITMASK; |
| frank26080115 | 0:84d7747641aa | 96 | SSPx->CPSR = prescale & SSP_CPSR_BITMASK; |
| frank26080115 | 0:84d7747641aa | 97 | } |
| frank26080115 | 0:84d7747641aa | 98 | |
| frank26080115 | 0:84d7747641aa | 99 | /** |
| frank26080115 | 0:84d7747641aa | 100 | * @} |
| frank26080115 | 0:84d7747641aa | 101 | */ |
| frank26080115 | 0:84d7747641aa | 102 | |
| frank26080115 | 0:84d7747641aa | 103 | /* Public Functions ----------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 104 | /** @addtogroup SSP_Public_Functions |
| frank26080115 | 0:84d7747641aa | 105 | * @{ |
| frank26080115 | 0:84d7747641aa | 106 | */ |
| frank26080115 | 0:84d7747641aa | 107 | |
| frank26080115 | 0:84d7747641aa | 108 | /********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 109 | * @brief Initializes the SSPx peripheral according to the specified |
| frank26080115 | 0:84d7747641aa | 110 | * parameters in the SSP_ConfigStruct. |
| frank26080115 | 0:84d7747641aa | 111 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 112 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 113 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 114 | * @param[in] SSP_ConfigStruct Pointer to a SSP_CFG_Type structure |
| frank26080115 | 0:84d7747641aa | 115 | * that contains the configuration information for the |
| frank26080115 | 0:84d7747641aa | 116 | * specified SSP peripheral. |
| frank26080115 | 0:84d7747641aa | 117 | * @return None |
| frank26080115 | 0:84d7747641aa | 118 | *********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 119 | void SSP_Init(LPC_SSP_TypeDef *SSPx, SSP_CFG_Type *SSP_ConfigStruct) |
| frank26080115 | 0:84d7747641aa | 120 | { |
| frank26080115 | 0:84d7747641aa | 121 | uint32_t tmp; |
| frank26080115 | 0:84d7747641aa | 122 | |
| frank26080115 | 0:84d7747641aa | 123 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 124 | |
| frank26080115 | 0:84d7747641aa | 125 | if(SSPx == LPC_SSP0) { |
| frank26080115 | 0:84d7747641aa | 126 | /* Set up clock and power for SSP0 module */ |
| frank26080115 | 0:84d7747641aa | 127 | CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSSP0, ENABLE); |
| frank26080115 | 0:84d7747641aa | 128 | } else if(SSPx == LPC_SSP1) { |
| frank26080115 | 0:84d7747641aa | 129 | /* Set up clock and power for SSP1 module */ |
| frank26080115 | 0:84d7747641aa | 130 | CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSSP1, ENABLE); |
| frank26080115 | 0:84d7747641aa | 131 | } else { |
| frank26080115 | 0:84d7747641aa | 132 | return; |
| frank26080115 | 0:84d7747641aa | 133 | } |
| frank26080115 | 0:84d7747641aa | 134 | |
| frank26080115 | 0:84d7747641aa | 135 | /* Configure SSP, interrupt is disable, LoopBack mode is disable, |
| frank26080115 | 0:84d7747641aa | 136 | * SSP is disable, Slave output is disable as default |
| frank26080115 | 0:84d7747641aa | 137 | */ |
| frank26080115 | 0:84d7747641aa | 138 | tmp = ((SSP_ConfigStruct->CPHA) | (SSP_ConfigStruct->CPOL) \ |
| frank26080115 | 0:84d7747641aa | 139 | | (SSP_ConfigStruct->FrameFormat) | (SSP_ConfigStruct->Databit)) |
| frank26080115 | 0:84d7747641aa | 140 | & SSP_CR0_BITMASK; |
| frank26080115 | 0:84d7747641aa | 141 | // write back to SSP control register |
| frank26080115 | 0:84d7747641aa | 142 | SSPx->CR0 = tmp; |
| frank26080115 | 0:84d7747641aa | 143 | |
| frank26080115 | 0:84d7747641aa | 144 | tmp = SSP_ConfigStruct->Mode & SSP_CR1_BITMASK; |
| frank26080115 | 0:84d7747641aa | 145 | // Write back to CR1 |
| frank26080115 | 0:84d7747641aa | 146 | SSPx->CR1 = tmp; |
| frank26080115 | 0:84d7747641aa | 147 | |
| frank26080115 | 0:84d7747641aa | 148 | // Set clock rate for SSP peripheral |
| frank26080115 | 0:84d7747641aa | 149 | setSSPclock(SSPx, SSP_ConfigStruct->ClockRate); |
| frank26080115 | 0:84d7747641aa | 150 | } |
| frank26080115 | 0:84d7747641aa | 151 | |
| frank26080115 | 0:84d7747641aa | 152 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 153 | * @brief De-initializes the SSPx peripheral registers to their |
| frank26080115 | 0:84d7747641aa | 154 | * default reset values. |
| frank26080115 | 0:84d7747641aa | 155 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 156 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 157 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 158 | * @return None |
| frank26080115 | 0:84d7747641aa | 159 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 160 | void SSP_DeInit(LPC_SSP_TypeDef* SSPx) |
| frank26080115 | 0:84d7747641aa | 161 | { |
| frank26080115 | 0:84d7747641aa | 162 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 163 | |
| frank26080115 | 0:84d7747641aa | 164 | if (SSPx == LPC_SSP0){ |
| frank26080115 | 0:84d7747641aa | 165 | /* Set up clock and power for SSP0 module */ |
| frank26080115 | 0:84d7747641aa | 166 | CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSSP0, DISABLE); |
| frank26080115 | 0:84d7747641aa | 167 | } else if (SSPx == LPC_SSP1) { |
| frank26080115 | 0:84d7747641aa | 168 | /* Set up clock and power for SSP1 module */ |
| frank26080115 | 0:84d7747641aa | 169 | CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSSP1, DISABLE); |
| frank26080115 | 0:84d7747641aa | 170 | } |
| frank26080115 | 0:84d7747641aa | 171 | } |
| frank26080115 | 0:84d7747641aa | 172 | |
| frank26080115 | 0:84d7747641aa | 173 | /*****************************************************************************//** |
| frank26080115 | 0:84d7747641aa | 174 | * @brief Get data size bit selected |
| frank26080115 | 0:84d7747641aa | 175 | * @param[in] SSPx pointer to LPC_SSP_TypeDef structure, should be: |
| frank26080115 | 0:84d7747641aa | 176 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 177 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 178 | * @return Data size, could be: |
| frank26080115 | 0:84d7747641aa | 179 | * - SSP_DATABIT_4: 4 bit transfer |
| frank26080115 | 0:84d7747641aa | 180 | * - SSP_DATABIT_5: 5 bit transfer |
| frank26080115 | 0:84d7747641aa | 181 | * ... |
| frank26080115 | 0:84d7747641aa | 182 | * - SSP_DATABIT_16: 16 bit transfer |
| frank26080115 | 0:84d7747641aa | 183 | *******************************************************************************/ |
| frank26080115 | 0:84d7747641aa | 184 | uint8_t SSP_GetDataSize(LPC_SSP_TypeDef* SSPx) |
| frank26080115 | 0:84d7747641aa | 185 | { |
| frank26080115 | 0:84d7747641aa | 186 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 187 | return (SSPx->CR0 & (0xF)); |
| frank26080115 | 0:84d7747641aa | 188 | } |
| frank26080115 | 0:84d7747641aa | 189 | |
| frank26080115 | 0:84d7747641aa | 190 | /*****************************************************************************//** |
| frank26080115 | 0:84d7747641aa | 191 | * @brief Fills each SSP_InitStruct member with its default value: |
| frank26080115 | 0:84d7747641aa | 192 | * - CPHA = SSP_CPHA_FIRST |
| frank26080115 | 0:84d7747641aa | 193 | * - CPOL = SSP_CPOL_HI |
| frank26080115 | 0:84d7747641aa | 194 | * - ClockRate = 1000000 |
| frank26080115 | 0:84d7747641aa | 195 | * - Databit = SSP_DATABIT_8 |
| frank26080115 | 0:84d7747641aa | 196 | * - Mode = SSP_MASTER_MODE |
| frank26080115 | 0:84d7747641aa | 197 | * - FrameFormat = SSP_FRAME_SSP |
| frank26080115 | 0:84d7747641aa | 198 | * @param[in] SSP_InitStruct Pointer to a SSP_CFG_Type structure |
| frank26080115 | 0:84d7747641aa | 199 | * which will be initialized. |
| frank26080115 | 0:84d7747641aa | 200 | * @return None |
| frank26080115 | 0:84d7747641aa | 201 | *******************************************************************************/ |
| frank26080115 | 0:84d7747641aa | 202 | void SSP_ConfigStructInit(SSP_CFG_Type *SSP_InitStruct) |
| frank26080115 | 0:84d7747641aa | 203 | { |
| frank26080115 | 0:84d7747641aa | 204 | SSP_InitStruct->CPHA = SSP_CPHA_FIRST; |
| frank26080115 | 0:84d7747641aa | 205 | SSP_InitStruct->CPOL = SSP_CPOL_HI; |
| frank26080115 | 0:84d7747641aa | 206 | SSP_InitStruct->ClockRate = 1000000; |
| frank26080115 | 0:84d7747641aa | 207 | SSP_InitStruct->Databit = SSP_DATABIT_8; |
| frank26080115 | 0:84d7747641aa | 208 | SSP_InitStruct->Mode = SSP_MASTER_MODE; |
| frank26080115 | 0:84d7747641aa | 209 | SSP_InitStruct->FrameFormat = SSP_FRAME_SPI; |
| frank26080115 | 0:84d7747641aa | 210 | } |
| frank26080115 | 0:84d7747641aa | 211 | |
| frank26080115 | 0:84d7747641aa | 212 | |
| frank26080115 | 0:84d7747641aa | 213 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 214 | * @brief Enable or disable SSP peripheral's operation |
| frank26080115 | 0:84d7747641aa | 215 | * @param[in] SSPx SSP peripheral, should be: |
| frank26080115 | 0:84d7747641aa | 216 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 217 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 218 | * @param[in] NewState New State of SSPx peripheral's operation |
| frank26080115 | 0:84d7747641aa | 219 | * @return none |
| frank26080115 | 0:84d7747641aa | 220 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 221 | void SSP_Cmd(LPC_SSP_TypeDef* SSPx, FunctionalState NewState) |
| frank26080115 | 0:84d7747641aa | 222 | { |
| frank26080115 | 0:84d7747641aa | 223 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 224 | CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); |
| frank26080115 | 0:84d7747641aa | 225 | |
| frank26080115 | 0:84d7747641aa | 226 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 227 | { |
| frank26080115 | 0:84d7747641aa | 228 | SSPx->CR1 |= SSP_CR1_SSP_EN; |
| frank26080115 | 0:84d7747641aa | 229 | } |
| frank26080115 | 0:84d7747641aa | 230 | else |
| frank26080115 | 0:84d7747641aa | 231 | { |
| frank26080115 | 0:84d7747641aa | 232 | SSPx->CR1 &= (~SSP_CR1_SSP_EN) & SSP_CR1_BITMASK; |
| frank26080115 | 0:84d7747641aa | 233 | } |
| frank26080115 | 0:84d7747641aa | 234 | } |
| frank26080115 | 0:84d7747641aa | 235 | |
| frank26080115 | 0:84d7747641aa | 236 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 237 | * @brief Enable or disable Loop Back mode function in SSP peripheral |
| frank26080115 | 0:84d7747641aa | 238 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 239 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 240 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 241 | * @param[in] NewState New State of Loop Back mode, should be: |
| frank26080115 | 0:84d7747641aa | 242 | * - ENABLE: Enable this function |
| frank26080115 | 0:84d7747641aa | 243 | * - DISABLE: Disable this function |
| frank26080115 | 0:84d7747641aa | 244 | * @return None |
| frank26080115 | 0:84d7747641aa | 245 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 246 | void SSP_LoopBackCmd(LPC_SSP_TypeDef* SSPx, FunctionalState NewState) |
| frank26080115 | 0:84d7747641aa | 247 | { |
| frank26080115 | 0:84d7747641aa | 248 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 249 | CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); |
| frank26080115 | 0:84d7747641aa | 250 | |
| frank26080115 | 0:84d7747641aa | 251 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 252 | { |
| frank26080115 | 0:84d7747641aa | 253 | SSPx->CR1 |= SSP_CR1_LBM_EN; |
| frank26080115 | 0:84d7747641aa | 254 | } |
| frank26080115 | 0:84d7747641aa | 255 | else |
| frank26080115 | 0:84d7747641aa | 256 | { |
| frank26080115 | 0:84d7747641aa | 257 | SSPx->CR1 &= (~SSP_CR1_LBM_EN) & SSP_CR1_BITMASK; |
| frank26080115 | 0:84d7747641aa | 258 | } |
| frank26080115 | 0:84d7747641aa | 259 | } |
| frank26080115 | 0:84d7747641aa | 260 | |
| frank26080115 | 0:84d7747641aa | 261 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 262 | * @brief Enable or disable Slave Output function in SSP peripheral |
| frank26080115 | 0:84d7747641aa | 263 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 264 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 265 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 266 | * @param[in] NewState New State of Slave Output function, should be: |
| frank26080115 | 0:84d7747641aa | 267 | * - ENABLE: Slave Output in normal operation |
| frank26080115 | 0:84d7747641aa | 268 | * - DISABLE: Slave Output is disabled. This blocks |
| frank26080115 | 0:84d7747641aa | 269 | * SSP controller from driving the transmit data |
| frank26080115 | 0:84d7747641aa | 270 | * line (MISO) |
| frank26080115 | 0:84d7747641aa | 271 | * Note: This function is available when SSP peripheral in Slave mode |
| frank26080115 | 0:84d7747641aa | 272 | * @return None |
| frank26080115 | 0:84d7747641aa | 273 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 274 | void SSP_SlaveOutputCmd(LPC_SSP_TypeDef* SSPx, FunctionalState NewState) |
| frank26080115 | 0:84d7747641aa | 275 | { |
| frank26080115 | 0:84d7747641aa | 276 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 277 | CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); |
| frank26080115 | 0:84d7747641aa | 278 | |
| frank26080115 | 0:84d7747641aa | 279 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 280 | { |
| frank26080115 | 0:84d7747641aa | 281 | SSPx->CR1 &= (~SSP_CR1_SO_DISABLE) & SSP_CR1_BITMASK; |
| frank26080115 | 0:84d7747641aa | 282 | } |
| frank26080115 | 0:84d7747641aa | 283 | else |
| frank26080115 | 0:84d7747641aa | 284 | { |
| frank26080115 | 0:84d7747641aa | 285 | SSPx->CR1 |= SSP_CR1_SO_DISABLE; |
| frank26080115 | 0:84d7747641aa | 286 | } |
| frank26080115 | 0:84d7747641aa | 287 | } |
| frank26080115 | 0:84d7747641aa | 288 | |
| frank26080115 | 0:84d7747641aa | 289 | |
| frank26080115 | 0:84d7747641aa | 290 | |
| frank26080115 | 0:84d7747641aa | 291 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 292 | * @brief Transmit a single data through SSPx peripheral |
| frank26080115 | 0:84d7747641aa | 293 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 294 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 295 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 296 | * @param[in] Data Data to transmit (must be 16 or 8-bit long, |
| frank26080115 | 0:84d7747641aa | 297 | * this depend on SSP data bit number configured) |
| frank26080115 | 0:84d7747641aa | 298 | * @return none |
| frank26080115 | 0:84d7747641aa | 299 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 300 | void SSP_SendData(LPC_SSP_TypeDef* SSPx, uint16_t Data) |
| frank26080115 | 0:84d7747641aa | 301 | { |
| frank26080115 | 0:84d7747641aa | 302 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 303 | |
| frank26080115 | 0:84d7747641aa | 304 | SSPx->DR = SSP_DR_BITMASK(Data); |
| frank26080115 | 0:84d7747641aa | 305 | } |
| frank26080115 | 0:84d7747641aa | 306 | |
| frank26080115 | 0:84d7747641aa | 307 | |
| frank26080115 | 0:84d7747641aa | 308 | |
| frank26080115 | 0:84d7747641aa | 309 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 310 | * @brief Receive a single data from SSPx peripheral |
| frank26080115 | 0:84d7747641aa | 311 | * @param[in] SSPx SSP peripheral selected, should be |
| frank26080115 | 0:84d7747641aa | 312 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 313 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 314 | * @return Data received (16-bit long) |
| frank26080115 | 0:84d7747641aa | 315 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 316 | uint16_t SSP_ReceiveData(LPC_SSP_TypeDef* SSPx) |
| frank26080115 | 0:84d7747641aa | 317 | { |
| frank26080115 | 0:84d7747641aa | 318 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 319 | |
| frank26080115 | 0:84d7747641aa | 320 | return ((uint16_t) (SSP_DR_BITMASK(SSPx->DR))); |
| frank26080115 | 0:84d7747641aa | 321 | } |
| frank26080115 | 0:84d7747641aa | 322 | |
| frank26080115 | 0:84d7747641aa | 323 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 324 | * @brief SSP Read write data function |
| frank26080115 | 0:84d7747641aa | 325 | * @param[in] SSPx Pointer to SSP peripheral, should be |
| frank26080115 | 0:84d7747641aa | 326 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 327 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 328 | * @param[in] dataCfg Pointer to a SSP_DATA_SETUP_Type structure that |
| frank26080115 | 0:84d7747641aa | 329 | * contains specified information about transmit |
| frank26080115 | 0:84d7747641aa | 330 | * data configuration. |
| frank26080115 | 0:84d7747641aa | 331 | * @param[in] xfType Transfer type, should be: |
| frank26080115 | 0:84d7747641aa | 332 | * - SSP_TRANSFER_POLLING: Polling mode |
| frank26080115 | 0:84d7747641aa | 333 | * - SSP_TRANSFER_INTERRUPT: Interrupt mode |
| frank26080115 | 0:84d7747641aa | 334 | * @return Actual Data length has been transferred in polling mode. |
| frank26080115 | 0:84d7747641aa | 335 | * In interrupt mode, always return (0) |
| frank26080115 | 0:84d7747641aa | 336 | * Return (-1) if error. |
| frank26080115 | 0:84d7747641aa | 337 | * Note: This function can be used in both master and slave mode. |
| frank26080115 | 0:84d7747641aa | 338 | ***********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 339 | int32_t SSP_ReadWrite (LPC_SSP_TypeDef *SSPx, SSP_DATA_SETUP_Type *dataCfg, \ |
| frank26080115 | 0:84d7747641aa | 340 | SSP_TRANSFER_Type xfType) |
| frank26080115 | 0:84d7747641aa | 341 | { |
| frank26080115 | 0:84d7747641aa | 342 | uint8_t *rdata8 = 0; |
| frank26080115 | 0:84d7747641aa | 343 | uint8_t *wdata8 = 0; |
| frank26080115 | 0:84d7747641aa | 344 | uint16_t *rdata16 = 0; |
| frank26080115 | 0:84d7747641aa | 345 | uint16_t *wdata16 = 0; |
| frank26080115 | 0:84d7747641aa | 346 | uint32_t stat = 0; |
| frank26080115 | 0:84d7747641aa | 347 | uint32_t tmp = 0; |
| frank26080115 | 0:84d7747641aa | 348 | int32_t dataword; |
| frank26080115 | 0:84d7747641aa | 349 | |
| frank26080115 | 0:84d7747641aa | 350 | dataCfg->rx_cnt = 0; |
| frank26080115 | 0:84d7747641aa | 351 | dataCfg->tx_cnt = 0; |
| frank26080115 | 0:84d7747641aa | 352 | dataCfg->status = 0; |
| frank26080115 | 0:84d7747641aa | 353 | |
| frank26080115 | 0:84d7747641aa | 354 | |
| frank26080115 | 0:84d7747641aa | 355 | /* Clear all remaining data in RX FIFO */ |
| frank26080115 | 0:84d7747641aa | 356 | while (SSPx->SR & SSP_SR_RNE){ |
| frank26080115 | 0:84d7747641aa | 357 | tmp = (uint32_t) SSP_ReceiveData(SSPx); |
| frank26080115 | 0:84d7747641aa | 358 | } |
| frank26080115 | 0:84d7747641aa | 359 | |
| frank26080115 | 0:84d7747641aa | 360 | // Clear status |
| frank26080115 | 0:84d7747641aa | 361 | SSPx->ICR = SSP_ICR_BITMASK; |
| frank26080115 | 0:84d7747641aa | 362 | if(SSP_GetDataSize(SSPx)>8) |
| frank26080115 | 0:84d7747641aa | 363 | dataword = 1; |
| frank26080115 | 0:84d7747641aa | 364 | else dataword = 0; |
| frank26080115 | 0:84d7747641aa | 365 | |
| frank26080115 | 0:84d7747641aa | 366 | // Polling mode ---------------------------------------------------------------------- |
| frank26080115 | 0:84d7747641aa | 367 | if (xfType == SSP_TRANSFER_POLLING){ |
| frank26080115 | 0:84d7747641aa | 368 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 369 | rdata8 = (uint8_t *)dataCfg->rx_data; |
| frank26080115 | 0:84d7747641aa | 370 | wdata8 = (uint8_t *)dataCfg->tx_data; |
| frank26080115 | 0:84d7747641aa | 371 | } else { |
| frank26080115 | 0:84d7747641aa | 372 | rdata16 = (uint16_t *)dataCfg->rx_data; |
| frank26080115 | 0:84d7747641aa | 373 | wdata16 = (uint16_t *)dataCfg->tx_data; |
| frank26080115 | 0:84d7747641aa | 374 | } |
| frank26080115 | 0:84d7747641aa | 375 | while ((dataCfg->tx_cnt != dataCfg->length) || (dataCfg->rx_cnt != dataCfg->length)){ |
| frank26080115 | 0:84d7747641aa | 376 | if ((SSPx->SR & SSP_SR_TNF) && (dataCfg->tx_cnt != dataCfg->length)){ |
| frank26080115 | 0:84d7747641aa | 377 | // Write data to buffer |
| frank26080115 | 0:84d7747641aa | 378 | if(dataCfg->tx_data == NULL){ |
| frank26080115 | 0:84d7747641aa | 379 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 380 | SSP_SendData(SSPx, 0xFF); |
| frank26080115 | 0:84d7747641aa | 381 | dataCfg->tx_cnt++; |
| frank26080115 | 0:84d7747641aa | 382 | } else { |
| frank26080115 | 0:84d7747641aa | 383 | SSP_SendData(SSPx, 0xFFFF); |
| frank26080115 | 0:84d7747641aa | 384 | dataCfg->tx_cnt += 2; |
| frank26080115 | 0:84d7747641aa | 385 | } |
| frank26080115 | 0:84d7747641aa | 386 | } else { |
| frank26080115 | 0:84d7747641aa | 387 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 388 | SSP_SendData(SSPx, *wdata8); |
| frank26080115 | 0:84d7747641aa | 389 | wdata8++; |
| frank26080115 | 0:84d7747641aa | 390 | dataCfg->tx_cnt++; |
| frank26080115 | 0:84d7747641aa | 391 | } else { |
| frank26080115 | 0:84d7747641aa | 392 | SSP_SendData(SSPx, *wdata16); |
| frank26080115 | 0:84d7747641aa | 393 | wdata16++; |
| frank26080115 | 0:84d7747641aa | 394 | dataCfg->tx_cnt += 2; |
| frank26080115 | 0:84d7747641aa | 395 | } |
| frank26080115 | 0:84d7747641aa | 396 | } |
| frank26080115 | 0:84d7747641aa | 397 | } |
| frank26080115 | 0:84d7747641aa | 398 | |
| frank26080115 | 0:84d7747641aa | 399 | // Check overrun error |
| frank26080115 | 0:84d7747641aa | 400 | if ((stat = SSPx->RIS) & SSP_RIS_ROR){ |
| frank26080115 | 0:84d7747641aa | 401 | // save status and return |
| frank26080115 | 0:84d7747641aa | 402 | dataCfg->status = stat | SSP_STAT_ERROR; |
| frank26080115 | 0:84d7747641aa | 403 | return (-1); |
| frank26080115 | 0:84d7747641aa | 404 | } |
| frank26080115 | 0:84d7747641aa | 405 | |
| frank26080115 | 0:84d7747641aa | 406 | // Check for any data available in RX FIFO |
| frank26080115 | 0:84d7747641aa | 407 | while ((SSPx->SR & SSP_SR_RNE) && (dataCfg->rx_cnt != dataCfg->length)){ |
| frank26080115 | 0:84d7747641aa | 408 | // Read data from SSP data |
| frank26080115 | 0:84d7747641aa | 409 | tmp = SSP_ReceiveData(SSPx); |
| frank26080115 | 0:84d7747641aa | 410 | |
| frank26080115 | 0:84d7747641aa | 411 | // Store data to destination |
| frank26080115 | 0:84d7747641aa | 412 | if (dataCfg->rx_data != NULL) |
| frank26080115 | 0:84d7747641aa | 413 | { |
| frank26080115 | 0:84d7747641aa | 414 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 415 | *(rdata8) = (uint8_t) tmp; |
| frank26080115 | 0:84d7747641aa | 416 | rdata8++; |
| frank26080115 | 0:84d7747641aa | 417 | } else { |
| frank26080115 | 0:84d7747641aa | 418 | *(rdata16) = (uint16_t) tmp; |
| frank26080115 | 0:84d7747641aa | 419 | rdata16++; |
| frank26080115 | 0:84d7747641aa | 420 | } |
| frank26080115 | 0:84d7747641aa | 421 | } |
| frank26080115 | 0:84d7747641aa | 422 | // Increase counter |
| frank26080115 | 0:84d7747641aa | 423 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 424 | dataCfg->rx_cnt++; |
| frank26080115 | 0:84d7747641aa | 425 | } else { |
| frank26080115 | 0:84d7747641aa | 426 | dataCfg->rx_cnt += 2; |
| frank26080115 | 0:84d7747641aa | 427 | } |
| frank26080115 | 0:84d7747641aa | 428 | } |
| frank26080115 | 0:84d7747641aa | 429 | } |
| frank26080115 | 0:84d7747641aa | 430 | |
| frank26080115 | 0:84d7747641aa | 431 | // save status |
| frank26080115 | 0:84d7747641aa | 432 | dataCfg->status = SSP_STAT_DONE; |
| frank26080115 | 0:84d7747641aa | 433 | |
| frank26080115 | 0:84d7747641aa | 434 | if (dataCfg->tx_data != NULL){ |
| frank26080115 | 0:84d7747641aa | 435 | return dataCfg->tx_cnt; |
| frank26080115 | 0:84d7747641aa | 436 | } else if (dataCfg->rx_data != NULL){ |
| frank26080115 | 0:84d7747641aa | 437 | return dataCfg->rx_cnt; |
| frank26080115 | 0:84d7747641aa | 438 | } else { |
| frank26080115 | 0:84d7747641aa | 439 | return (0); |
| frank26080115 | 0:84d7747641aa | 440 | } |
| frank26080115 | 0:84d7747641aa | 441 | } |
| frank26080115 | 0:84d7747641aa | 442 | |
| frank26080115 | 0:84d7747641aa | 443 | // Interrupt mode ---------------------------------------------------------------------- |
| frank26080115 | 0:84d7747641aa | 444 | else if (xfType == SSP_TRANSFER_INTERRUPT){ |
| frank26080115 | 0:84d7747641aa | 445 | |
| frank26080115 | 0:84d7747641aa | 446 | while ((SSPx->SR & SSP_SR_TNF) && (dataCfg->tx_cnt != dataCfg->length)){ |
| frank26080115 | 0:84d7747641aa | 447 | // Write data to buffer |
| frank26080115 | 0:84d7747641aa | 448 | if(dataCfg->tx_data == NULL){ |
| frank26080115 | 0:84d7747641aa | 449 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 450 | SSP_SendData(SSPx, 0xFF); |
| frank26080115 | 0:84d7747641aa | 451 | dataCfg->tx_cnt++; |
| frank26080115 | 0:84d7747641aa | 452 | } else { |
| frank26080115 | 0:84d7747641aa | 453 | SSP_SendData(SSPx, 0xFFFF); |
| frank26080115 | 0:84d7747641aa | 454 | dataCfg->tx_cnt += 2; |
| frank26080115 | 0:84d7747641aa | 455 | } |
| frank26080115 | 0:84d7747641aa | 456 | } else { |
| frank26080115 | 0:84d7747641aa | 457 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 458 | SSP_SendData(SSPx, (*(uint8_t *)((uint32_t)dataCfg->tx_data + dataCfg->tx_cnt))); |
| frank26080115 | 0:84d7747641aa | 459 | dataCfg->tx_cnt++; |
| frank26080115 | 0:84d7747641aa | 460 | } else { |
| frank26080115 | 0:84d7747641aa | 461 | SSP_SendData(SSPx, (*(uint16_t *)((uint32_t)dataCfg->tx_data + dataCfg->tx_cnt))); |
| frank26080115 | 0:84d7747641aa | 462 | dataCfg->tx_cnt += 2; |
| frank26080115 | 0:84d7747641aa | 463 | } |
| frank26080115 | 0:84d7747641aa | 464 | } |
| frank26080115 | 0:84d7747641aa | 465 | |
| frank26080115 | 0:84d7747641aa | 466 | // Check error |
| frank26080115 | 0:84d7747641aa | 467 | if ((stat = SSPx->RIS) & SSP_RIS_ROR){ |
| frank26080115 | 0:84d7747641aa | 468 | // save status and return |
| frank26080115 | 0:84d7747641aa | 469 | dataCfg->status = stat | SSP_STAT_ERROR; |
| frank26080115 | 0:84d7747641aa | 470 | return (-1); |
| frank26080115 | 0:84d7747641aa | 471 | } |
| frank26080115 | 0:84d7747641aa | 472 | |
| frank26080115 | 0:84d7747641aa | 473 | // Check for any data available in RX FIFO |
| frank26080115 | 0:84d7747641aa | 474 | while ((SSPx->SR & SSP_SR_RNE) && (dataCfg->rx_cnt != dataCfg->length)){ |
| frank26080115 | 0:84d7747641aa | 475 | // Read data from SSP data |
| frank26080115 | 0:84d7747641aa | 476 | tmp = SSP_ReceiveData(SSPx); |
| frank26080115 | 0:84d7747641aa | 477 | |
| frank26080115 | 0:84d7747641aa | 478 | // Store data to destination |
| frank26080115 | 0:84d7747641aa | 479 | if (dataCfg->rx_data != NULL) |
| frank26080115 | 0:84d7747641aa | 480 | { |
| frank26080115 | 0:84d7747641aa | 481 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 482 | *(uint8_t *)((uint32_t)dataCfg->rx_data + dataCfg->rx_cnt) = (uint8_t) tmp; |
| frank26080115 | 0:84d7747641aa | 483 | } else { |
| frank26080115 | 0:84d7747641aa | 484 | *(uint16_t *)((uint32_t)dataCfg->rx_data + dataCfg->rx_cnt) = (uint16_t) tmp; |
| frank26080115 | 0:84d7747641aa | 485 | } |
| frank26080115 | 0:84d7747641aa | 486 | } |
| frank26080115 | 0:84d7747641aa | 487 | // Increase counter |
| frank26080115 | 0:84d7747641aa | 488 | if (dataword == 0){ |
| frank26080115 | 0:84d7747641aa | 489 | dataCfg->rx_cnt++; |
| frank26080115 | 0:84d7747641aa | 490 | } else { |
| frank26080115 | 0:84d7747641aa | 491 | dataCfg->rx_cnt += 2; |
| frank26080115 | 0:84d7747641aa | 492 | } |
| frank26080115 | 0:84d7747641aa | 493 | } |
| frank26080115 | 0:84d7747641aa | 494 | } |
| frank26080115 | 0:84d7747641aa | 495 | |
| frank26080115 | 0:84d7747641aa | 496 | // If there more data to sent or receive |
| frank26080115 | 0:84d7747641aa | 497 | if ((dataCfg->rx_cnt != dataCfg->length) || (dataCfg->tx_cnt != dataCfg->length)){ |
| frank26080115 | 0:84d7747641aa | 498 | // Enable all interrupt |
| frank26080115 | 0:84d7747641aa | 499 | SSPx->IMSC = SSP_IMSC_BITMASK; |
| frank26080115 | 0:84d7747641aa | 500 | } else { |
| frank26080115 | 0:84d7747641aa | 501 | // Save status |
| frank26080115 | 0:84d7747641aa | 502 | dataCfg->status = SSP_STAT_DONE; |
| frank26080115 | 0:84d7747641aa | 503 | } |
| frank26080115 | 0:84d7747641aa | 504 | return (0); |
| frank26080115 | 0:84d7747641aa | 505 | } |
| frank26080115 | 0:84d7747641aa | 506 | |
| frank26080115 | 0:84d7747641aa | 507 | return (-1); |
| frank26080115 | 0:84d7747641aa | 508 | } |
| frank26080115 | 0:84d7747641aa | 509 | |
| frank26080115 | 0:84d7747641aa | 510 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 511 | * @brief Checks whether the specified SSP status flag is set or not |
| frank26080115 | 0:84d7747641aa | 512 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 513 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 514 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 515 | * @param[in] FlagType Type of flag to check status, should be one |
| frank26080115 | 0:84d7747641aa | 516 | * of following: |
| frank26080115 | 0:84d7747641aa | 517 | * - SSP_STAT_TXFIFO_EMPTY: TX FIFO is empty |
| frank26080115 | 0:84d7747641aa | 518 | * - SSP_STAT_TXFIFO_NOTFULL: TX FIFO is not full |
| frank26080115 | 0:84d7747641aa | 519 | * - SSP_STAT_RXFIFO_NOTEMPTY: RX FIFO is not empty |
| frank26080115 | 0:84d7747641aa | 520 | * - SSP_STAT_RXFIFO_FULL: RX FIFO is full |
| frank26080115 | 0:84d7747641aa | 521 | * - SSP_STAT_BUSY: SSP peripheral is busy |
| frank26080115 | 0:84d7747641aa | 522 | * @return New State of specified SSP status flag |
| frank26080115 | 0:84d7747641aa | 523 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 524 | FlagStatus SSP_GetStatus(LPC_SSP_TypeDef* SSPx, uint32_t FlagType) |
| frank26080115 | 0:84d7747641aa | 525 | { |
| frank26080115 | 0:84d7747641aa | 526 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 527 | CHECK_PARAM(PARAM_SSP_STAT(FlagType)); |
| frank26080115 | 0:84d7747641aa | 528 | |
| frank26080115 | 0:84d7747641aa | 529 | return ((SSPx->SR & FlagType) ? SET : RESET); |
| frank26080115 | 0:84d7747641aa | 530 | } |
| frank26080115 | 0:84d7747641aa | 531 | |
| frank26080115 | 0:84d7747641aa | 532 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 533 | * @brief Enable or disable specified interrupt type in SSP peripheral |
| frank26080115 | 0:84d7747641aa | 534 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 535 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 536 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 537 | * @param[in] IntType Interrupt type in SSP peripheral, should be: |
| frank26080115 | 0:84d7747641aa | 538 | * - SSP_INTCFG_ROR: Receive Overrun interrupt |
| frank26080115 | 0:84d7747641aa | 539 | * - SSP_INTCFG_RT: Receive Time out interrupt |
| frank26080115 | 0:84d7747641aa | 540 | * - SSP_INTCFG_RX: RX FIFO is at least half full interrupt |
| frank26080115 | 0:84d7747641aa | 541 | * - SSP_INTCFG_TX: TX FIFO is at least half empty interrupt |
| frank26080115 | 0:84d7747641aa | 542 | * @param[in] NewState New State of specified interrupt type, should be: |
| frank26080115 | 0:84d7747641aa | 543 | * - ENABLE: Enable this interrupt type |
| frank26080115 | 0:84d7747641aa | 544 | * - DISABLE: Disable this interrupt type |
| frank26080115 | 0:84d7747641aa | 545 | * @return None |
| frank26080115 | 0:84d7747641aa | 546 | * Note: We can enable/disable multi-interrupt type by OR multi value |
| frank26080115 | 0:84d7747641aa | 547 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 548 | void SSP_IntConfig(LPC_SSP_TypeDef *SSPx, uint32_t IntType, FunctionalState NewState) |
| frank26080115 | 0:84d7747641aa | 549 | { |
| frank26080115 | 0:84d7747641aa | 550 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 551 | |
| frank26080115 | 0:84d7747641aa | 552 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 553 | { |
| frank26080115 | 0:84d7747641aa | 554 | SSPx->IMSC |= IntType; |
| frank26080115 | 0:84d7747641aa | 555 | } |
| frank26080115 | 0:84d7747641aa | 556 | else |
| frank26080115 | 0:84d7747641aa | 557 | { |
| frank26080115 | 0:84d7747641aa | 558 | SSPx->IMSC &= (~IntType) & SSP_IMSC_BITMASK; |
| frank26080115 | 0:84d7747641aa | 559 | } |
| frank26080115 | 0:84d7747641aa | 560 | } |
| frank26080115 | 0:84d7747641aa | 561 | |
| frank26080115 | 0:84d7747641aa | 562 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 563 | * @brief Check whether the specified Raw interrupt status flag is |
| frank26080115 | 0:84d7747641aa | 564 | * set or not |
| frank26080115 | 0:84d7747641aa | 565 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 566 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 567 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 568 | * @param[in] RawIntType Raw Interrupt Type, should be: |
| frank26080115 | 0:84d7747641aa | 569 | * - SSP_INTSTAT_RAW_ROR: Receive Overrun interrupt |
| frank26080115 | 0:84d7747641aa | 570 | * - SSP_INTSTAT_RAW_RT: Receive Time out interrupt |
| frank26080115 | 0:84d7747641aa | 571 | * - SSP_INTSTAT_RAW_RX: RX FIFO is at least half full interrupt |
| frank26080115 | 0:84d7747641aa | 572 | * - SSP_INTSTAT_RAW_TX: TX FIFO is at least half empty interrupt |
| frank26080115 | 0:84d7747641aa | 573 | * @return New State of specified Raw interrupt status flag in SSP peripheral |
| frank26080115 | 0:84d7747641aa | 574 | * Note: Enabling/Disabling specified interrupt in SSP peripheral does not |
| frank26080115 | 0:84d7747641aa | 575 | * effect to Raw Interrupt Status flag. |
| frank26080115 | 0:84d7747641aa | 576 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 577 | IntStatus SSP_GetRawIntStatus(LPC_SSP_TypeDef *SSPx, uint32_t RawIntType) |
| frank26080115 | 0:84d7747641aa | 578 | { |
| frank26080115 | 0:84d7747641aa | 579 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 580 | CHECK_PARAM(PARAM_SSP_INTSTAT_RAW(RawIntType)); |
| frank26080115 | 0:84d7747641aa | 581 | |
| frank26080115 | 0:84d7747641aa | 582 | return ((SSPx->RIS & RawIntType) ? SET : RESET); |
| frank26080115 | 0:84d7747641aa | 583 | } |
| frank26080115 | 0:84d7747641aa | 584 | |
| frank26080115 | 0:84d7747641aa | 585 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 586 | * @brief Get Raw Interrupt Status register |
| frank26080115 | 0:84d7747641aa | 587 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 588 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 589 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 590 | * @return Raw Interrupt Status (RIS) register value |
| frank26080115 | 0:84d7747641aa | 591 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 592 | uint32_t SSP_GetRawIntStatusReg(LPC_SSP_TypeDef *SSPx) |
| frank26080115 | 0:84d7747641aa | 593 | { |
| frank26080115 | 0:84d7747641aa | 594 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 595 | return (SSPx->RIS); |
| frank26080115 | 0:84d7747641aa | 596 | } |
| frank26080115 | 0:84d7747641aa | 597 | |
| frank26080115 | 0:84d7747641aa | 598 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 599 | * @brief Check whether the specified interrupt status flag is |
| frank26080115 | 0:84d7747641aa | 600 | * set or not |
| frank26080115 | 0:84d7747641aa | 601 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 602 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 603 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 604 | * @param[in] IntType Raw Interrupt Type, should be: |
| frank26080115 | 0:84d7747641aa | 605 | * - SSP_INTSTAT_ROR: Receive Overrun interrupt |
| frank26080115 | 0:84d7747641aa | 606 | * - SSP_INTSTAT_RT: Receive Time out interrupt |
| frank26080115 | 0:84d7747641aa | 607 | * - SSP_INTSTAT_RX: RX FIFO is at least half full interrupt |
| frank26080115 | 0:84d7747641aa | 608 | * - SSP_INTSTAT_TX: TX FIFO is at least half empty interrupt |
| frank26080115 | 0:84d7747641aa | 609 | * @return New State of specified interrupt status flag in SSP peripheral |
| frank26080115 | 0:84d7747641aa | 610 | * Note: Enabling/Disabling specified interrupt in SSP peripheral effects |
| frank26080115 | 0:84d7747641aa | 611 | * to Interrupt Status flag. |
| frank26080115 | 0:84d7747641aa | 612 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 613 | IntStatus SSP_GetIntStatus (LPC_SSP_TypeDef *SSPx, uint32_t IntType) |
| frank26080115 | 0:84d7747641aa | 614 | { |
| frank26080115 | 0:84d7747641aa | 615 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 616 | CHECK_PARAM(PARAM_SSP_INTSTAT(IntType)); |
| frank26080115 | 0:84d7747641aa | 617 | |
| frank26080115 | 0:84d7747641aa | 618 | return ((SSPx->MIS & IntType) ? SET :RESET); |
| frank26080115 | 0:84d7747641aa | 619 | } |
| frank26080115 | 0:84d7747641aa | 620 | |
| frank26080115 | 0:84d7747641aa | 621 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 622 | * @brief Clear specified interrupt pending in SSP peripheral |
| frank26080115 | 0:84d7747641aa | 623 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 624 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 625 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 626 | * @param[in] IntType Interrupt pending to clear, should be: |
| frank26080115 | 0:84d7747641aa | 627 | * - SSP_INTCLR_ROR: clears the "frame was received when |
| frank26080115 | 0:84d7747641aa | 628 | * RxFIFO was full" interrupt. |
| frank26080115 | 0:84d7747641aa | 629 | * - SSP_INTCLR_RT: clears the "Rx FIFO was not empty and |
| frank26080115 | 0:84d7747641aa | 630 | * has not been read for a timeout period" interrupt. |
| frank26080115 | 0:84d7747641aa | 631 | * @return None |
| frank26080115 | 0:84d7747641aa | 632 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 633 | void SSP_ClearIntPending(LPC_SSP_TypeDef *SSPx, uint32_t IntType) |
| frank26080115 | 0:84d7747641aa | 634 | { |
| frank26080115 | 0:84d7747641aa | 635 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 636 | CHECK_PARAM(PARAM_SSP_INTCLR(IntType)); |
| frank26080115 | 0:84d7747641aa | 637 | |
| frank26080115 | 0:84d7747641aa | 638 | SSPx->ICR = IntType; |
| frank26080115 | 0:84d7747641aa | 639 | } |
| frank26080115 | 0:84d7747641aa | 640 | |
| frank26080115 | 0:84d7747641aa | 641 | /*********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 642 | * @brief Enable/Disable DMA function for SSP peripheral |
| frank26080115 | 0:84d7747641aa | 643 | * @param[in] SSPx SSP peripheral selected, should be: |
| frank26080115 | 0:84d7747641aa | 644 | * - LPC_SSP0: SSP0 peripheral |
| frank26080115 | 0:84d7747641aa | 645 | * - LPC_SSP1: SSP1 peripheral |
| frank26080115 | 0:84d7747641aa | 646 | * @param[in] DMAMode Type of DMA, should be: |
| frank26080115 | 0:84d7747641aa | 647 | * - SSP_DMA_TX: DMA for the transmit FIFO |
| frank26080115 | 0:84d7747641aa | 648 | * - SSP_DMA_RX: DMA for the Receive FIFO |
| frank26080115 | 0:84d7747641aa | 649 | * @param[in] NewState New State of DMA function on SSP peripheral, |
| frank26080115 | 0:84d7747641aa | 650 | * should be: |
| frank26080115 | 0:84d7747641aa | 651 | * - ENALBE: Enable this function |
| frank26080115 | 0:84d7747641aa | 652 | * - DISABLE: Disable this function |
| frank26080115 | 0:84d7747641aa | 653 | * @return None |
| frank26080115 | 0:84d7747641aa | 654 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 655 | void SSP_DMACmd(LPC_SSP_TypeDef *SSPx, uint32_t DMAMode, FunctionalState NewState) |
| frank26080115 | 0:84d7747641aa | 656 | { |
| frank26080115 | 0:84d7747641aa | 657 | CHECK_PARAM(PARAM_SSPx(SSPx)); |
| frank26080115 | 0:84d7747641aa | 658 | CHECK_PARAM(PARAM_SSP_DMA(DMAMode)); |
| frank26080115 | 0:84d7747641aa | 659 | CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); |
| frank26080115 | 0:84d7747641aa | 660 | |
| frank26080115 | 0:84d7747641aa | 661 | if (NewState == ENABLE) |
| frank26080115 | 0:84d7747641aa | 662 | { |
| frank26080115 | 0:84d7747641aa | 663 | SSPx->DMACR |= DMAMode; |
| frank26080115 | 0:84d7747641aa | 664 | } |
| frank26080115 | 0:84d7747641aa | 665 | else |
| frank26080115 | 0:84d7747641aa | 666 | { |
| frank26080115 | 0:84d7747641aa | 667 | SSPx->DMACR &= (~DMAMode) & SSP_DMA_BITMASK; |
| frank26080115 | 0:84d7747641aa | 668 | } |
| frank26080115 | 0:84d7747641aa | 669 | } |
| frank26080115 | 0:84d7747641aa | 670 | |
| frank26080115 | 0:84d7747641aa | 671 | /** |
| frank26080115 | 0:84d7747641aa | 672 | * @} |
| frank26080115 | 0:84d7747641aa | 673 | */ |
| frank26080115 | 0:84d7747641aa | 674 | |
| frank26080115 | 0:84d7747641aa | 675 | #endif /* _SSP */ |
| frank26080115 | 0:84d7747641aa | 676 | |
| frank26080115 | 0:84d7747641aa | 677 | /** |
| frank26080115 | 0:84d7747641aa | 678 | * @} |
| frank26080115 | 0:84d7747641aa | 679 | */ |
| frank26080115 | 0:84d7747641aa | 680 | |
| frank26080115 | 0:84d7747641aa | 681 | /* --------------------------------- End Of File ------------------------------ */ |
| frank26080115 | 0:84d7747641aa | 682 |