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Dependents: STM32_F103-C8T6basecanblink_led
Fork of mbed-dev by
targets/TARGET_NUVOTON/TARGET_NUC472/serial_api.c@149:156823d33999, 2016-10-28 (annotated)
- Committer:
- <>
- Date:
- Fri Oct 28 11:17:30 2016 +0100
- Revision:
- 149:156823d33999
- Parent:
- targets/hal/TARGET_NUVOTON/TARGET_NUC472/serial_api.c@144:ef7eb2e8f9f7
- Child:
- 151:5eaa88a5bcc7
This updates the lib to the mbed lib v128
NOTE: This release includes a restructuring of the file and directory locations and thus some
include paths in your code may need updating accordingly.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2015-2016 Nuvoton |
<> | 144:ef7eb2e8f9f7 | 3 | * |
<> | 144:ef7eb2e8f9f7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 144:ef7eb2e8f9f7 | 5 | * you may not use this file except in compliance with the License. |
<> | 144:ef7eb2e8f9f7 | 6 | * You may obtain a copy of the License at |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 144:ef7eb2e8f9f7 | 9 | * |
<> | 144:ef7eb2e8f9f7 | 10 | * Unless required by applicable law or agreed to in writing, software |
<> | 144:ef7eb2e8f9f7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 144:ef7eb2e8f9f7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 144:ef7eb2e8f9f7 | 13 | * See the License for the specific language governing permissions and |
<> | 144:ef7eb2e8f9f7 | 14 | * limitations under the License. |
<> | 144:ef7eb2e8f9f7 | 15 | */ |
<> | 144:ef7eb2e8f9f7 | 16 | |
<> | 144:ef7eb2e8f9f7 | 17 | #include "serial_api.h" |
<> | 144:ef7eb2e8f9f7 | 18 | |
<> | 144:ef7eb2e8f9f7 | 19 | #if DEVICE_SERIAL |
<> | 144:ef7eb2e8f9f7 | 20 | |
<> | 144:ef7eb2e8f9f7 | 21 | #include "cmsis.h" |
<> | 144:ef7eb2e8f9f7 | 22 | #include "mbed_error.h" |
<> | 144:ef7eb2e8f9f7 | 23 | #include "mbed_assert.h" |
<> | 144:ef7eb2e8f9f7 | 24 | #include "PeripheralPins.h" |
<> | 144:ef7eb2e8f9f7 | 25 | #include "nu_modutil.h" |
<> | 144:ef7eb2e8f9f7 | 26 | #include "nu_bitutil.h" |
<> | 144:ef7eb2e8f9f7 | 27 | |
<> | 144:ef7eb2e8f9f7 | 28 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 29 | #include "dma_api.h" |
<> | 144:ef7eb2e8f9f7 | 30 | #include "dma.h" |
<> | 144:ef7eb2e8f9f7 | 31 | #endif |
<> | 144:ef7eb2e8f9f7 | 32 | |
<> | 144:ef7eb2e8f9f7 | 33 | struct nu_uart_var { |
<> | 144:ef7eb2e8f9f7 | 34 | serial_t * obj; |
<> | 144:ef7eb2e8f9f7 | 35 | uint32_t fifo_size_tx; |
<> | 144:ef7eb2e8f9f7 | 36 | uint32_t fifo_size_rx; |
<> | 144:ef7eb2e8f9f7 | 37 | void (*vec)(void); |
<> | 144:ef7eb2e8f9f7 | 38 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 39 | void (*vec_async)(void); |
<> | 144:ef7eb2e8f9f7 | 40 | uint8_t pdma_perp_tx; |
<> | 144:ef7eb2e8f9f7 | 41 | uint8_t pdma_perp_rx; |
<> | 144:ef7eb2e8f9f7 | 42 | #endif |
<> | 144:ef7eb2e8f9f7 | 43 | }; |
<> | 144:ef7eb2e8f9f7 | 44 | |
<> | 144:ef7eb2e8f9f7 | 45 | static void uart0_vec(void); |
<> | 144:ef7eb2e8f9f7 | 46 | static void uart1_vec(void); |
<> | 144:ef7eb2e8f9f7 | 47 | static void uart2_vec(void); |
<> | 144:ef7eb2e8f9f7 | 48 | static void uart3_vec(void); |
<> | 144:ef7eb2e8f9f7 | 49 | static void uart4_vec(void); |
<> | 144:ef7eb2e8f9f7 | 50 | static void uart5_vec(void); |
<> | 144:ef7eb2e8f9f7 | 51 | static void uart_irq(serial_t *obj); |
<> | 144:ef7eb2e8f9f7 | 52 | |
<> | 144:ef7eb2e8f9f7 | 53 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 54 | static void uart0_vec_async(void); |
<> | 144:ef7eb2e8f9f7 | 55 | static void uart1_vec_async(void); |
<> | 144:ef7eb2e8f9f7 | 56 | static void uart2_vec_async(void); |
<> | 144:ef7eb2e8f9f7 | 57 | static void uart3_vec_async(void); |
<> | 144:ef7eb2e8f9f7 | 58 | static void uart4_vec_async(void); |
<> | 144:ef7eb2e8f9f7 | 59 | static void uart5_vec_async(void); |
<> | 144:ef7eb2e8f9f7 | 60 | static void uart_irq_async(serial_t *obj); |
<> | 144:ef7eb2e8f9f7 | 61 | |
<> | 144:ef7eb2e8f9f7 | 62 | static void uart_dma_handler_tx(uint32_t id, uint32_t event); |
<> | 144:ef7eb2e8f9f7 | 63 | static void uart_dma_handler_rx(uint32_t id, uint32_t event); |
<> | 144:ef7eb2e8f9f7 | 64 | |
<> | 144:ef7eb2e8f9f7 | 65 | static void serial_tx_enable_interrupt(serial_t *obj, uint32_t address, uint8_t enable); |
<> | 144:ef7eb2e8f9f7 | 66 | static void serial_rx_enable_interrupt(serial_t *obj, uint32_t address, uint8_t enable); |
<> | 144:ef7eb2e8f9f7 | 67 | static int serial_write_async(serial_t *obj); |
<> | 144:ef7eb2e8f9f7 | 68 | static int serial_read_async(serial_t *obj); |
<> | 144:ef7eb2e8f9f7 | 69 | |
<> | 144:ef7eb2e8f9f7 | 70 | static uint32_t serial_rx_event_check(serial_t *obj); |
<> | 144:ef7eb2e8f9f7 | 71 | static uint32_t serial_tx_event_check(serial_t *obj); |
<> | 144:ef7eb2e8f9f7 | 72 | |
<> | 144:ef7eb2e8f9f7 | 73 | static int serial_is_tx_complete(serial_t *obj); |
<> | 144:ef7eb2e8f9f7 | 74 | static void serial_tx_enable_event(serial_t *obj, int event, uint8_t enable); |
<> | 144:ef7eb2e8f9f7 | 75 | |
<> | 144:ef7eb2e8f9f7 | 76 | static void serial_tx_buffer_set(serial_t *obj, const void *tx, size_t length, uint8_t width); |
<> | 144:ef7eb2e8f9f7 | 77 | static void serial_rx_buffer_set(serial_t *obj, void *rx, size_t length, uint8_t width); |
<> | 144:ef7eb2e8f9f7 | 78 | static void serial_rx_set_char_match(serial_t *obj, uint8_t char_match); |
<> | 144:ef7eb2e8f9f7 | 79 | static void serial_rx_enable_event(serial_t *obj, int event, uint8_t enable); |
<> | 144:ef7eb2e8f9f7 | 80 | static int serial_is_rx_complete(serial_t *obj); |
<> | 144:ef7eb2e8f9f7 | 81 | |
<> | 144:ef7eb2e8f9f7 | 82 | static void serial_check_dma_usage(DMAUsage *dma_usage, int *dma_ch); |
<> | 144:ef7eb2e8f9f7 | 83 | static int serial_is_irq_en(serial_t *obj, SerialIrq irq); |
<> | 144:ef7eb2e8f9f7 | 84 | #endif |
<> | 144:ef7eb2e8f9f7 | 85 | |
<> | 144:ef7eb2e8f9f7 | 86 | static struct nu_uart_var uart0_var = { |
<> | 144:ef7eb2e8f9f7 | 87 | .obj = NULL, |
<> | 144:ef7eb2e8f9f7 | 88 | .fifo_size_tx = 64, |
<> | 144:ef7eb2e8f9f7 | 89 | .fifo_size_rx = 64, |
<> | 144:ef7eb2e8f9f7 | 90 | .vec = uart0_vec, |
<> | 144:ef7eb2e8f9f7 | 91 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 92 | .vec_async = uart0_vec_async, |
<> | 144:ef7eb2e8f9f7 | 93 | .pdma_perp_tx = PDMA_UART0_TX, |
<> | 144:ef7eb2e8f9f7 | 94 | .pdma_perp_rx = PDMA_UART0_RX |
<> | 144:ef7eb2e8f9f7 | 95 | #endif |
<> | 144:ef7eb2e8f9f7 | 96 | }; |
<> | 144:ef7eb2e8f9f7 | 97 | static struct nu_uart_var uart1_var = { |
<> | 144:ef7eb2e8f9f7 | 98 | .obj = NULL, |
<> | 144:ef7eb2e8f9f7 | 99 | .fifo_size_tx = 16, |
<> | 144:ef7eb2e8f9f7 | 100 | .fifo_size_rx = 16, |
<> | 144:ef7eb2e8f9f7 | 101 | .vec = uart1_vec, |
<> | 144:ef7eb2e8f9f7 | 102 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 103 | .vec_async = uart1_vec_async, |
<> | 144:ef7eb2e8f9f7 | 104 | .pdma_perp_tx = PDMA_UART1_TX, |
<> | 144:ef7eb2e8f9f7 | 105 | .pdma_perp_rx = PDMA_UART1_RX |
<> | 144:ef7eb2e8f9f7 | 106 | #endif |
<> | 144:ef7eb2e8f9f7 | 107 | }; |
<> | 144:ef7eb2e8f9f7 | 108 | static struct nu_uart_var uart2_var = { |
<> | 144:ef7eb2e8f9f7 | 109 | .obj = NULL, |
<> | 144:ef7eb2e8f9f7 | 110 | .fifo_size_tx = 16, |
<> | 144:ef7eb2e8f9f7 | 111 | .fifo_size_rx = 16, |
<> | 144:ef7eb2e8f9f7 | 112 | .vec = uart2_vec, |
<> | 144:ef7eb2e8f9f7 | 113 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 114 | .vec_async = uart2_vec_async, |
<> | 144:ef7eb2e8f9f7 | 115 | .pdma_perp_tx = PDMA_UART2_TX, |
<> | 144:ef7eb2e8f9f7 | 116 | .pdma_perp_rx = PDMA_UART2_RX |
<> | 144:ef7eb2e8f9f7 | 117 | #endif |
<> | 144:ef7eb2e8f9f7 | 118 | }; |
<> | 144:ef7eb2e8f9f7 | 119 | static struct nu_uart_var uart3_var = { |
<> | 144:ef7eb2e8f9f7 | 120 | .obj = NULL, |
<> | 144:ef7eb2e8f9f7 | 121 | .fifo_size_tx = 16, |
<> | 144:ef7eb2e8f9f7 | 122 | .fifo_size_rx = 16, |
<> | 144:ef7eb2e8f9f7 | 123 | .vec = uart3_vec, |
<> | 144:ef7eb2e8f9f7 | 124 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 125 | .vec_async = uart3_vec_async, |
<> | 144:ef7eb2e8f9f7 | 126 | .pdma_perp_tx = PDMA_UART3_TX, |
<> | 144:ef7eb2e8f9f7 | 127 | .pdma_perp_rx = PDMA_UART3_RX |
<> | 144:ef7eb2e8f9f7 | 128 | #endif |
<> | 144:ef7eb2e8f9f7 | 129 | }; |
<> | 144:ef7eb2e8f9f7 | 130 | static struct nu_uart_var uart4_var = { |
<> | 144:ef7eb2e8f9f7 | 131 | .obj = NULL, |
<> | 144:ef7eb2e8f9f7 | 132 | .fifo_size_tx = 16, |
<> | 144:ef7eb2e8f9f7 | 133 | .fifo_size_rx = 16, |
<> | 144:ef7eb2e8f9f7 | 134 | .vec = uart4_vec, |
<> | 144:ef7eb2e8f9f7 | 135 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 136 | .vec_async = uart4_vec_async, |
<> | 144:ef7eb2e8f9f7 | 137 | .pdma_perp_tx = PDMA_UART4_TX, |
<> | 144:ef7eb2e8f9f7 | 138 | .pdma_perp_rx = PDMA_UART4_RX |
<> | 144:ef7eb2e8f9f7 | 139 | #endif |
<> | 144:ef7eb2e8f9f7 | 140 | }; |
<> | 144:ef7eb2e8f9f7 | 141 | static struct nu_uart_var uart5_var = { |
<> | 144:ef7eb2e8f9f7 | 142 | .obj = NULL, |
<> | 144:ef7eb2e8f9f7 | 143 | .fifo_size_tx = 16, |
<> | 144:ef7eb2e8f9f7 | 144 | .fifo_size_rx = 16, |
<> | 144:ef7eb2e8f9f7 | 145 | .vec = uart5_vec, |
<> | 144:ef7eb2e8f9f7 | 146 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 147 | .vec_async = uart5_vec_async, |
<> | 144:ef7eb2e8f9f7 | 148 | .pdma_perp_tx = PDMA_UART5_TX, |
<> | 144:ef7eb2e8f9f7 | 149 | .pdma_perp_rx = PDMA_UART5_RX |
<> | 144:ef7eb2e8f9f7 | 150 | #endif |
<> | 144:ef7eb2e8f9f7 | 151 | }; |
<> | 144:ef7eb2e8f9f7 | 152 | |
<> | 144:ef7eb2e8f9f7 | 153 | |
<> | 144:ef7eb2e8f9f7 | 154 | int stdio_uart_inited = 0; |
<> | 144:ef7eb2e8f9f7 | 155 | serial_t stdio_uart; |
<> | 144:ef7eb2e8f9f7 | 156 | static uint32_t uart_modinit_mask = 0; |
<> | 144:ef7eb2e8f9f7 | 157 | |
<> | 144:ef7eb2e8f9f7 | 158 | static const struct nu_modinit_s uart_modinit_tab[] = { |
<> | 144:ef7eb2e8f9f7 | 159 | {UART_0, UART0_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1), UART0_RST, UART0_IRQn, &uart0_var}, |
<> | 144:ef7eb2e8f9f7 | 160 | {UART_1, UART1_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1), UART1_RST, UART1_IRQn, &uart1_var}, |
<> | 144:ef7eb2e8f9f7 | 161 | {UART_2, UART2_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1), UART2_RST, UART2_IRQn, &uart2_var}, |
<> | 144:ef7eb2e8f9f7 | 162 | {UART_3, UART3_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1), UART3_RST, UART3_IRQn, &uart3_var}, |
<> | 144:ef7eb2e8f9f7 | 163 | {UART_4, UART4_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1), UART4_RST, UART4_IRQn, &uart4_var}, |
<> | 144:ef7eb2e8f9f7 | 164 | {UART_5, UART5_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1), UART5_RST, UART5_IRQn, &uart5_var}, |
<> | 144:ef7eb2e8f9f7 | 165 | |
<> | 144:ef7eb2e8f9f7 | 166 | {NC, 0, 0, 0, 0, (IRQn_Type) 0, NULL} |
<> | 144:ef7eb2e8f9f7 | 167 | }; |
<> | 144:ef7eb2e8f9f7 | 168 | |
<> | 144:ef7eb2e8f9f7 | 169 | extern void mbed_sdk_init(void); |
<> | 144:ef7eb2e8f9f7 | 170 | |
<> | 144:ef7eb2e8f9f7 | 171 | void serial_init(serial_t *obj, PinName tx, PinName rx) |
<> | 144:ef7eb2e8f9f7 | 172 | { |
<> | 144:ef7eb2e8f9f7 | 173 | // NOTE: serial_init() gets called from _sys_open() timing of which is before main()/mbed_sdk_init(). |
<> | 144:ef7eb2e8f9f7 | 174 | mbed_sdk_init(); |
<> | 144:ef7eb2e8f9f7 | 175 | |
<> | 144:ef7eb2e8f9f7 | 176 | // Determine which UART_x the pins are used for |
<> | 144:ef7eb2e8f9f7 | 177 | uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX); |
<> | 144:ef7eb2e8f9f7 | 178 | uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX); |
<> | 144:ef7eb2e8f9f7 | 179 | // Get the peripheral name (UART_x) from the pins and assign it to the object |
<> | 144:ef7eb2e8f9f7 | 180 | obj->serial.uart = (UARTName) pinmap_merge(uart_tx, uart_rx); |
<> | 144:ef7eb2e8f9f7 | 181 | MBED_ASSERT((int)obj->serial.uart != NC); |
<> | 144:ef7eb2e8f9f7 | 182 | |
<> | 144:ef7eb2e8f9f7 | 183 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 184 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 185 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 186 | |
<> | 144:ef7eb2e8f9f7 | 187 | // Reset this module |
<> | 144:ef7eb2e8f9f7 | 188 | SYS_ResetModule(modinit->rsetidx); |
<> | 144:ef7eb2e8f9f7 | 189 | |
<> | 144:ef7eb2e8f9f7 | 190 | // Select IP clock source |
<> | 144:ef7eb2e8f9f7 | 191 | CLK_SetModuleClock(modinit->clkidx, modinit->clksrc, modinit->clkdiv); |
<> | 144:ef7eb2e8f9f7 | 192 | // Enable IP clock |
<> | 144:ef7eb2e8f9f7 | 193 | CLK_EnableModuleClock(modinit->clkidx); |
<> | 144:ef7eb2e8f9f7 | 194 | |
<> | 144:ef7eb2e8f9f7 | 195 | pinmap_pinout(tx, PinMap_UART_TX); |
<> | 144:ef7eb2e8f9f7 | 196 | pinmap_pinout(rx, PinMap_UART_RX); |
<> | 144:ef7eb2e8f9f7 | 197 | // FIXME: Why PullUp? |
<> | 144:ef7eb2e8f9f7 | 198 | //if (tx != NC) { |
<> | 144:ef7eb2e8f9f7 | 199 | // pin_mode(tx, PullUp); |
<> | 144:ef7eb2e8f9f7 | 200 | //} |
<> | 144:ef7eb2e8f9f7 | 201 | //if (rx != NC) { |
<> | 144:ef7eb2e8f9f7 | 202 | // pin_mode(rx, PullUp); |
<> | 144:ef7eb2e8f9f7 | 203 | //} |
<> | 144:ef7eb2e8f9f7 | 204 | obj->serial.pin_tx = tx; |
<> | 144:ef7eb2e8f9f7 | 205 | obj->serial.pin_rx = rx; |
<> | 144:ef7eb2e8f9f7 | 206 | |
<> | 144:ef7eb2e8f9f7 | 207 | // Configure the UART module and set its baudrate |
<> | 144:ef7eb2e8f9f7 | 208 | serial_baud(obj, 9600); |
<> | 144:ef7eb2e8f9f7 | 209 | // Configure data bits, parity, and stop bits |
<> | 144:ef7eb2e8f9f7 | 210 | serial_format(obj, 8, ParityNone, 1); |
<> | 144:ef7eb2e8f9f7 | 211 | |
<> | 144:ef7eb2e8f9f7 | 212 | obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec; |
<> | 144:ef7eb2e8f9f7 | 213 | |
<> | 144:ef7eb2e8f9f7 | 214 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 215 | obj->serial.dma_usage_tx = DMA_USAGE_NEVER; |
<> | 144:ef7eb2e8f9f7 | 216 | obj->serial.dma_usage_rx = DMA_USAGE_NEVER; |
<> | 144:ef7eb2e8f9f7 | 217 | obj->serial.event = 0; |
<> | 144:ef7eb2e8f9f7 | 218 | obj->serial.dma_chn_id_tx = DMA_ERROR_OUT_OF_CHANNELS; |
<> | 144:ef7eb2e8f9f7 | 219 | obj->serial.dma_chn_id_rx = DMA_ERROR_OUT_OF_CHANNELS; |
<> | 144:ef7eb2e8f9f7 | 220 | #endif |
<> | 144:ef7eb2e8f9f7 | 221 | |
<> | 144:ef7eb2e8f9f7 | 222 | // For stdio management |
<> | 144:ef7eb2e8f9f7 | 223 | if (obj == &stdio_uart) { |
<> | 144:ef7eb2e8f9f7 | 224 | stdio_uart_inited = 1; |
<> | 144:ef7eb2e8f9f7 | 225 | /* NOTE: Not required anymore because stdio_uart will be manually initialized in mbed-drivers/source/retarget.cpp from mbed beta */ |
<> | 144:ef7eb2e8f9f7 | 226 | //memcpy(&stdio_uart, obj, sizeof(serial_t)); |
<> | 144:ef7eb2e8f9f7 | 227 | } |
<> | 144:ef7eb2e8f9f7 | 228 | |
<> | 144:ef7eb2e8f9f7 | 229 | // Mark this module to be inited. |
<> | 144:ef7eb2e8f9f7 | 230 | int i = modinit - uart_modinit_tab; |
<> | 144:ef7eb2e8f9f7 | 231 | uart_modinit_mask |= 1 << i; |
<> | 144:ef7eb2e8f9f7 | 232 | } |
<> | 144:ef7eb2e8f9f7 | 233 | |
<> | 144:ef7eb2e8f9f7 | 234 | void serial_free(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 235 | { |
<> | 144:ef7eb2e8f9f7 | 236 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 237 | if (obj->serial.dma_chn_id_tx != DMA_ERROR_OUT_OF_CHANNELS) { |
<> | 144:ef7eb2e8f9f7 | 238 | dma_channel_free(obj->serial.dma_chn_id_tx); |
<> | 144:ef7eb2e8f9f7 | 239 | obj->serial.dma_chn_id_tx = DMA_ERROR_OUT_OF_CHANNELS; |
<> | 144:ef7eb2e8f9f7 | 240 | } |
<> | 144:ef7eb2e8f9f7 | 241 | if (obj->serial.dma_chn_id_rx != DMA_ERROR_OUT_OF_CHANNELS) { |
<> | 144:ef7eb2e8f9f7 | 242 | dma_channel_free(obj->serial.dma_chn_id_rx); |
<> | 144:ef7eb2e8f9f7 | 243 | obj->serial.dma_chn_id_rx = DMA_ERROR_OUT_OF_CHANNELS; |
<> | 144:ef7eb2e8f9f7 | 244 | } |
<> | 144:ef7eb2e8f9f7 | 245 | #endif |
<> | 144:ef7eb2e8f9f7 | 246 | |
<> | 144:ef7eb2e8f9f7 | 247 | UART_Close((UART_T *) NU_MODBASE(obj->serial.uart)); |
<> | 144:ef7eb2e8f9f7 | 248 | |
<> | 144:ef7eb2e8f9f7 | 249 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 250 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 251 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 252 | |
<> | 144:ef7eb2e8f9f7 | 253 | UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_THREIEN_Msk | UART_INTEN_RXTOIEN_Msk)); |
<> | 144:ef7eb2e8f9f7 | 254 | NVIC_DisableIRQ(modinit->irq_n); |
<> | 144:ef7eb2e8f9f7 | 255 | |
<> | 144:ef7eb2e8f9f7 | 256 | // Disable IP clock |
<> | 144:ef7eb2e8f9f7 | 257 | CLK_DisableModuleClock(modinit->clkidx); |
<> | 144:ef7eb2e8f9f7 | 258 | |
<> | 144:ef7eb2e8f9f7 | 259 | ((struct nu_uart_var *) modinit->var)->obj = NULL; |
<> | 144:ef7eb2e8f9f7 | 260 | |
<> | 144:ef7eb2e8f9f7 | 261 | if (obj == &stdio_uart) { |
<> | 144:ef7eb2e8f9f7 | 262 | stdio_uart_inited = 0; |
<> | 144:ef7eb2e8f9f7 | 263 | } |
<> | 144:ef7eb2e8f9f7 | 264 | |
<> | 144:ef7eb2e8f9f7 | 265 | // Mark this module to be deinited. |
<> | 144:ef7eb2e8f9f7 | 266 | int i = modinit - uart_modinit_tab; |
<> | 144:ef7eb2e8f9f7 | 267 | uart_modinit_mask &= ~(1 << i); |
<> | 144:ef7eb2e8f9f7 | 268 | } |
<> | 144:ef7eb2e8f9f7 | 269 | |
<> | 144:ef7eb2e8f9f7 | 270 | void serial_baud(serial_t *obj, int baudrate) { |
<> | 144:ef7eb2e8f9f7 | 271 | // Flush Tx FIFO. Otherwise, output data may get lost on this change. |
<> | 144:ef7eb2e8f9f7 | 272 | while (! UART_IS_TX_EMPTY(((UART_T *) obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 273 | |
<> | 144:ef7eb2e8f9f7 | 274 | obj->serial.baudrate = baudrate; |
<> | 144:ef7eb2e8f9f7 | 275 | UART_Open((UART_T *) NU_MODBASE(obj->serial.uart), baudrate); |
<> | 144:ef7eb2e8f9f7 | 276 | } |
<> | 144:ef7eb2e8f9f7 | 277 | |
<> | 144:ef7eb2e8f9f7 | 278 | void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) { |
<> | 144:ef7eb2e8f9f7 | 279 | // Flush Tx FIFO. Otherwise, output data may get lost on this change. |
<> | 144:ef7eb2e8f9f7 | 280 | while (! UART_IS_TX_EMPTY(((UART_T *) obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 281 | |
<> | 144:ef7eb2e8f9f7 | 282 | // TODO: Assert for not supported parity and data bits |
<> | 144:ef7eb2e8f9f7 | 283 | obj->serial.databits = data_bits; |
<> | 144:ef7eb2e8f9f7 | 284 | obj->serial.parity = parity; |
<> | 144:ef7eb2e8f9f7 | 285 | obj->serial.stopbits = stop_bits; |
<> | 144:ef7eb2e8f9f7 | 286 | |
<> | 144:ef7eb2e8f9f7 | 287 | uint32_t databits_intern = (data_bits == 5) ? UART_WORD_LEN_5 : |
<> | 144:ef7eb2e8f9f7 | 288 | (data_bits == 6) ? UART_WORD_LEN_6 : |
<> | 144:ef7eb2e8f9f7 | 289 | (data_bits == 7) ? UART_WORD_LEN_7 : |
<> | 144:ef7eb2e8f9f7 | 290 | UART_WORD_LEN_8; |
<> | 144:ef7eb2e8f9f7 | 291 | uint32_t parity_intern = (parity == ParityOdd || parity == ParityForced1) ? UART_PARITY_ODD : |
<> | 144:ef7eb2e8f9f7 | 292 | (parity == ParityEven || parity == ParityForced0) ? UART_PARITY_EVEN : |
<> | 144:ef7eb2e8f9f7 | 293 | UART_PARITY_NONE; |
<> | 144:ef7eb2e8f9f7 | 294 | uint32_t stopbits_intern = (stop_bits == 2) ? UART_STOP_BIT_2 : UART_STOP_BIT_1; |
<> | 144:ef7eb2e8f9f7 | 295 | UART_SetLine_Config((UART_T *) NU_MODBASE(obj->serial.uart), |
<> | 144:ef7eb2e8f9f7 | 296 | 0, // Don't change baudrate |
<> | 144:ef7eb2e8f9f7 | 297 | databits_intern, |
<> | 144:ef7eb2e8f9f7 | 298 | parity_intern, |
<> | 144:ef7eb2e8f9f7 | 299 | stopbits_intern); |
<> | 144:ef7eb2e8f9f7 | 300 | } |
<> | 144:ef7eb2e8f9f7 | 301 | |
<> | 144:ef7eb2e8f9f7 | 302 | #if DEVICE_SERIAL_FC |
<> | 144:ef7eb2e8f9f7 | 303 | |
<> | 144:ef7eb2e8f9f7 | 304 | void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) |
<> | 144:ef7eb2e8f9f7 | 305 | { |
<> | 144:ef7eb2e8f9f7 | 306 | UART_T *uart_base = (UART_T *) NU_MODBASE(obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 307 | |
<> | 144:ef7eb2e8f9f7 | 308 | // First, disable flow control completely. |
<> | 144:ef7eb2e8f9f7 | 309 | uart_base->INTEN &= ~(UART_INTEN_ATORTSEN_Msk | UART_INTEN_ATOCTSEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 310 | |
<> | 144:ef7eb2e8f9f7 | 311 | if ((type == FlowControlRTS || type == FlowControlRTSCTS) && rxflow != NC) { |
<> | 144:ef7eb2e8f9f7 | 312 | // Check if RTS pin matches. |
<> | 144:ef7eb2e8f9f7 | 313 | uint32_t uart_rts = pinmap_peripheral(rxflow, PinMap_UART_RTS); |
<> | 144:ef7eb2e8f9f7 | 314 | MBED_ASSERT(uart_rts == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 315 | // Enable the pin for RTS function |
<> | 144:ef7eb2e8f9f7 | 316 | pinmap_pinout(rxflow, PinMap_UART_RTS); |
<> | 144:ef7eb2e8f9f7 | 317 | // nRTS pin output is high level active |
<> | 144:ef7eb2e8f9f7 | 318 | uart_base->MODEM = (uart_base->MODEM & ~UART_MODEM_RTSACTLV_Msk) | UART_MODEM_RTSACTLV_Msk; |
<> | 144:ef7eb2e8f9f7 | 319 | uart_base->FIFO = (uart_base->FIFO & ~UART_FIFO_RTSTRGLV_Msk) | UART_FIFO_RTSTRGLV_8BYTES; |
<> | 144:ef7eb2e8f9f7 | 320 | // Enable RTS |
<> | 144:ef7eb2e8f9f7 | 321 | uart_base->INTEN |= UART_INTEN_ATORTSEN_Msk; |
<> | 144:ef7eb2e8f9f7 | 322 | } |
<> | 144:ef7eb2e8f9f7 | 323 | |
<> | 144:ef7eb2e8f9f7 | 324 | if ((type == FlowControlCTS || type == FlowControlRTSCTS) && txflow != NC) { |
<> | 144:ef7eb2e8f9f7 | 325 | // Check if CTS pin matches. |
<> | 144:ef7eb2e8f9f7 | 326 | uint32_t uart_cts = pinmap_peripheral(txflow, PinMap_UART_CTS); |
<> | 144:ef7eb2e8f9f7 | 327 | MBED_ASSERT(uart_cts == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 328 | // Enable the pin for CTS function |
<> | 144:ef7eb2e8f9f7 | 329 | pinmap_pinout(txflow, PinMap_UART_CTS); |
<> | 144:ef7eb2e8f9f7 | 330 | // nCTS pin input is high level active |
<> | 144:ef7eb2e8f9f7 | 331 | uart_base->MODEMSTS = (uart_base->MODEMSTS & ~UART_MODEMSTS_CTSACTLV_Msk) | UART_MODEMSTS_CTSACTLV_Msk; |
<> | 144:ef7eb2e8f9f7 | 332 | // Enable CTS |
<> | 144:ef7eb2e8f9f7 | 333 | uart_base->INTEN |= UART_INTEN_ATOCTSEN_Msk; |
<> | 144:ef7eb2e8f9f7 | 334 | } |
<> | 144:ef7eb2e8f9f7 | 335 | } |
<> | 144:ef7eb2e8f9f7 | 336 | |
<> | 144:ef7eb2e8f9f7 | 337 | #endif //DEVICE_SERIAL_FC |
<> | 144:ef7eb2e8f9f7 | 338 | |
<> | 144:ef7eb2e8f9f7 | 339 | void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) |
<> | 144:ef7eb2e8f9f7 | 340 | { |
<> | 144:ef7eb2e8f9f7 | 341 | // Flush Tx FIFO. Otherwise, output data may get lost on this change. |
<> | 144:ef7eb2e8f9f7 | 342 | while (! UART_IS_TX_EMPTY(((UART_T *) obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 343 | |
<> | 144:ef7eb2e8f9f7 | 344 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 345 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 346 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 347 | |
<> | 144:ef7eb2e8f9f7 | 348 | ((struct nu_uart_var *) modinit->var)->obj = obj; |
<> | 144:ef7eb2e8f9f7 | 349 | obj->serial.irq_handler = (uint32_t) handler; |
<> | 144:ef7eb2e8f9f7 | 350 | obj->serial.irq_id = id; |
<> | 144:ef7eb2e8f9f7 | 351 | |
<> | 144:ef7eb2e8f9f7 | 352 | // Restore sync-mode vector |
<> | 144:ef7eb2e8f9f7 | 353 | obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec; |
<> | 144:ef7eb2e8f9f7 | 354 | } |
<> | 144:ef7eb2e8f9f7 | 355 | |
<> | 144:ef7eb2e8f9f7 | 356 | void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) |
<> | 144:ef7eb2e8f9f7 | 357 | { |
<> | 144:ef7eb2e8f9f7 | 358 | if (enable) { |
<> | 144:ef7eb2e8f9f7 | 359 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 360 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 361 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 362 | |
<> | 144:ef7eb2e8f9f7 | 363 | NVIC_SetVector(modinit->irq_n, (uint32_t) obj->serial.vec); |
<> | 144:ef7eb2e8f9f7 | 364 | NVIC_EnableIRQ(modinit->irq_n); |
<> | 144:ef7eb2e8f9f7 | 365 | |
<> | 144:ef7eb2e8f9f7 | 366 | switch (irq) { |
<> | 144:ef7eb2e8f9f7 | 367 | // NOTE: Setting inten_msk first to avoid race condition |
<> | 144:ef7eb2e8f9f7 | 368 | case RxIrq: |
<> | 144:ef7eb2e8f9f7 | 369 | obj->serial.inten_msk = obj->serial.inten_msk | (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 370 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)); |
<> | 144:ef7eb2e8f9f7 | 371 | break; |
<> | 144:ef7eb2e8f9f7 | 372 | case TxIrq: |
<> | 144:ef7eb2e8f9f7 | 373 | obj->serial.inten_msk = obj->serial.inten_msk | UART_INTEN_THREIEN_Msk; |
<> | 144:ef7eb2e8f9f7 | 374 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_THREIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 375 | break; |
<> | 144:ef7eb2e8f9f7 | 376 | } |
<> | 144:ef7eb2e8f9f7 | 377 | } else { // disable |
<> | 144:ef7eb2e8f9f7 | 378 | switch (irq) { |
<> | 144:ef7eb2e8f9f7 | 379 | case RxIrq: |
<> | 144:ef7eb2e8f9f7 | 380 | UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)); |
<> | 144:ef7eb2e8f9f7 | 381 | obj->serial.inten_msk = obj->serial.inten_msk & ~(UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 382 | break; |
<> | 144:ef7eb2e8f9f7 | 383 | case TxIrq: |
<> | 144:ef7eb2e8f9f7 | 384 | UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_THREIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 385 | obj->serial.inten_msk = obj->serial.inten_msk & ~UART_INTEN_THREIEN_Msk; |
<> | 144:ef7eb2e8f9f7 | 386 | break; |
<> | 144:ef7eb2e8f9f7 | 387 | } |
<> | 144:ef7eb2e8f9f7 | 388 | } |
<> | 144:ef7eb2e8f9f7 | 389 | } |
<> | 144:ef7eb2e8f9f7 | 390 | |
<> | 144:ef7eb2e8f9f7 | 391 | int serial_getc(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 392 | { |
<> | 144:ef7eb2e8f9f7 | 393 | // TODO: Fix every byte access requires accompaniness of one interrupt. This degrades performance much. |
<> | 144:ef7eb2e8f9f7 | 394 | while (! serial_readable(obj)); |
<> | 144:ef7eb2e8f9f7 | 395 | int c = UART_READ(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 396 | |
<> | 144:ef7eb2e8f9f7 | 397 | // Simulate clear of the interrupt flag |
<> | 144:ef7eb2e8f9f7 | 398 | if (obj->serial.inten_msk & (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)) { |
<> | 144:ef7eb2e8f9f7 | 399 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)); |
<> | 144:ef7eb2e8f9f7 | 400 | } |
<> | 144:ef7eb2e8f9f7 | 401 | |
<> | 144:ef7eb2e8f9f7 | 402 | return c; |
<> | 144:ef7eb2e8f9f7 | 403 | } |
<> | 144:ef7eb2e8f9f7 | 404 | |
<> | 144:ef7eb2e8f9f7 | 405 | void serial_putc(serial_t *obj, int c) |
<> | 144:ef7eb2e8f9f7 | 406 | { |
<> | 144:ef7eb2e8f9f7 | 407 | // TODO: Fix every byte access requires accompaniness of one interrupt. This degrades performance much. |
<> | 144:ef7eb2e8f9f7 | 408 | while (! serial_writable(obj)); |
<> | 144:ef7eb2e8f9f7 | 409 | UART_WRITE(((UART_T *) NU_MODBASE(obj->serial.uart)), c); |
<> | 144:ef7eb2e8f9f7 | 410 | |
<> | 144:ef7eb2e8f9f7 | 411 | // Simulate clear of the interrupt flag |
<> | 144:ef7eb2e8f9f7 | 412 | if (obj->serial.inten_msk & UART_INTEN_THREIEN_Msk) { |
<> | 144:ef7eb2e8f9f7 | 413 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_THREIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 414 | } |
<> | 144:ef7eb2e8f9f7 | 415 | } |
<> | 144:ef7eb2e8f9f7 | 416 | |
<> | 144:ef7eb2e8f9f7 | 417 | int serial_readable(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 418 | { |
<> | 144:ef7eb2e8f9f7 | 419 | //return UART_IS_RX_READY(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 420 | return ! (((UART_T *) NU_MODBASE(obj->serial.uart))->FIFOSTS & UART_FIFOSTS_RXEMPTY_Msk); |
<> | 144:ef7eb2e8f9f7 | 421 | } |
<> | 144:ef7eb2e8f9f7 | 422 | |
<> | 144:ef7eb2e8f9f7 | 423 | int serial_writable(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 424 | { |
<> | 144:ef7eb2e8f9f7 | 425 | return ! UART_IS_TX_FULL(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 426 | } |
<> | 144:ef7eb2e8f9f7 | 427 | |
<> | 144:ef7eb2e8f9f7 | 428 | void serial_pinout_tx(PinName tx) |
<> | 144:ef7eb2e8f9f7 | 429 | { |
<> | 144:ef7eb2e8f9f7 | 430 | pinmap_pinout(tx, PinMap_UART_TX); |
<> | 144:ef7eb2e8f9f7 | 431 | } |
<> | 144:ef7eb2e8f9f7 | 432 | |
<> | 144:ef7eb2e8f9f7 | 433 | void serial_break_set(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 434 | { |
<> | 144:ef7eb2e8f9f7 | 435 | ((UART_T *) NU_MODBASE(obj->serial.uart))->LINE |= UART_LINE_BCB_Msk; |
<> | 144:ef7eb2e8f9f7 | 436 | } |
<> | 144:ef7eb2e8f9f7 | 437 | |
<> | 144:ef7eb2e8f9f7 | 438 | void serial_break_clear(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 439 | { |
<> | 144:ef7eb2e8f9f7 | 440 | ((UART_T *) NU_MODBASE(obj->serial.uart))->LINE &= ~UART_LINE_BCB_Msk; |
<> | 144:ef7eb2e8f9f7 | 441 | } |
<> | 144:ef7eb2e8f9f7 | 442 | |
<> | 144:ef7eb2e8f9f7 | 443 | static void uart0_vec(void) |
<> | 144:ef7eb2e8f9f7 | 444 | { |
<> | 144:ef7eb2e8f9f7 | 445 | uart_irq(uart0_var.obj); |
<> | 144:ef7eb2e8f9f7 | 446 | } |
<> | 144:ef7eb2e8f9f7 | 447 | |
<> | 144:ef7eb2e8f9f7 | 448 | static void uart1_vec(void) |
<> | 144:ef7eb2e8f9f7 | 449 | { |
<> | 144:ef7eb2e8f9f7 | 450 | uart_irq(uart1_var.obj); |
<> | 144:ef7eb2e8f9f7 | 451 | } |
<> | 144:ef7eb2e8f9f7 | 452 | |
<> | 144:ef7eb2e8f9f7 | 453 | static void uart2_vec(void) |
<> | 144:ef7eb2e8f9f7 | 454 | { |
<> | 144:ef7eb2e8f9f7 | 455 | uart_irq(uart2_var.obj); |
<> | 144:ef7eb2e8f9f7 | 456 | } |
<> | 144:ef7eb2e8f9f7 | 457 | |
<> | 144:ef7eb2e8f9f7 | 458 | static void uart3_vec(void) |
<> | 144:ef7eb2e8f9f7 | 459 | { |
<> | 144:ef7eb2e8f9f7 | 460 | uart_irq(uart3_var.obj); |
<> | 144:ef7eb2e8f9f7 | 461 | } |
<> | 144:ef7eb2e8f9f7 | 462 | |
<> | 144:ef7eb2e8f9f7 | 463 | static void uart4_vec(void) |
<> | 144:ef7eb2e8f9f7 | 464 | { |
<> | 144:ef7eb2e8f9f7 | 465 | uart_irq(uart4_var.obj); |
<> | 144:ef7eb2e8f9f7 | 466 | } |
<> | 144:ef7eb2e8f9f7 | 467 | |
<> | 144:ef7eb2e8f9f7 | 468 | static void uart5_vec(void) |
<> | 144:ef7eb2e8f9f7 | 469 | { |
<> | 144:ef7eb2e8f9f7 | 470 | uart_irq(uart5_var.obj); |
<> | 144:ef7eb2e8f9f7 | 471 | } |
<> | 144:ef7eb2e8f9f7 | 472 | |
<> | 144:ef7eb2e8f9f7 | 473 | static void uart_irq(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 474 | { |
<> | 144:ef7eb2e8f9f7 | 475 | UART_T *uart_base = (UART_T *) NU_MODBASE(obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 476 | |
<> | 144:ef7eb2e8f9f7 | 477 | if (uart_base->INTSTS & (UART_INTSTS_RDAINT_Msk | UART_INTSTS_RXTOINT_Msk)) { |
<> | 144:ef7eb2e8f9f7 | 478 | // Simulate clear of the interrupt flag. Temporarily disable the interrupt here and to be recovered on next read. |
<> | 144:ef7eb2e8f9f7 | 479 | UART_DISABLE_INT(uart_base, (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)); |
<> | 144:ef7eb2e8f9f7 | 480 | if (obj->serial.irq_handler) { |
<> | 144:ef7eb2e8f9f7 | 481 | ((uart_irq_handler) obj->serial.irq_handler)(obj->serial.irq_id, RxIrq); |
<> | 144:ef7eb2e8f9f7 | 482 | } |
<> | 144:ef7eb2e8f9f7 | 483 | } |
<> | 144:ef7eb2e8f9f7 | 484 | |
<> | 144:ef7eb2e8f9f7 | 485 | if (uart_base->INTSTS & UART_INTSTS_THREINT_Msk) { |
<> | 144:ef7eb2e8f9f7 | 486 | // Simulate clear of the interrupt flag. Temporarily disable the interrupt here and to be recovered on next write. |
<> | 144:ef7eb2e8f9f7 | 487 | UART_DISABLE_INT(uart_base, UART_INTEN_THREIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 488 | if (obj->serial.irq_handler) { |
<> | 144:ef7eb2e8f9f7 | 489 | ((uart_irq_handler) obj->serial.irq_handler)(obj->serial.irq_id, TxIrq); |
<> | 144:ef7eb2e8f9f7 | 490 | } |
<> | 144:ef7eb2e8f9f7 | 491 | } |
<> | 144:ef7eb2e8f9f7 | 492 | |
<> | 144:ef7eb2e8f9f7 | 493 | // FIXME: Ignore all other interrupt flags. Clear them. Otherwise, program will get stuck in interrupt. |
<> | 144:ef7eb2e8f9f7 | 494 | uart_base->INTSTS = uart_base->INTSTS; |
<> | 144:ef7eb2e8f9f7 | 495 | uart_base->FIFOSTS = uart_base->FIFOSTS; |
<> | 144:ef7eb2e8f9f7 | 496 | } |
<> | 144:ef7eb2e8f9f7 | 497 | |
<> | 144:ef7eb2e8f9f7 | 498 | |
<> | 144:ef7eb2e8f9f7 | 499 | #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 500 | int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx_width, uint32_t handler, uint32_t event, DMAUsage hint) |
<> | 144:ef7eb2e8f9f7 | 501 | { |
<> | 144:ef7eb2e8f9f7 | 502 | // NOTE: tx_width is deprecated. Assume its value is databits ceiled to the nearest number among 8, 16, and 32. |
<> | 144:ef7eb2e8f9f7 | 503 | tx_width = (obj->serial.databits <= 8) ? 8 : (obj->serial.databits <= 16) ? 16 : 32; |
<> | 144:ef7eb2e8f9f7 | 504 | |
<> | 144:ef7eb2e8f9f7 | 505 | MBED_ASSERT(tx_width == 8 || tx_width == 16 || tx_width == 32); |
<> | 144:ef7eb2e8f9f7 | 506 | |
<> | 144:ef7eb2e8f9f7 | 507 | obj->serial.dma_usage_tx = hint; |
<> | 144:ef7eb2e8f9f7 | 508 | serial_check_dma_usage(&obj->serial.dma_usage_tx, &obj->serial.dma_chn_id_tx); |
<> | 144:ef7eb2e8f9f7 | 509 | |
<> | 144:ef7eb2e8f9f7 | 510 | // UART IRQ is necessary for both interrupt way and DMA way |
<> | 144:ef7eb2e8f9f7 | 511 | serial_tx_enable_event(obj, event, 1); |
<> | 144:ef7eb2e8f9f7 | 512 | serial_tx_buffer_set(obj, tx, tx_length, tx_width); |
<> | 144:ef7eb2e8f9f7 | 513 | //UART_HAL_DisableTransmitter(obj->serial.address); |
<> | 144:ef7eb2e8f9f7 | 514 | //UART_HAL_FlushTxFifo(obj->serial.address); |
<> | 144:ef7eb2e8f9f7 | 515 | //UART_HAL_EnableTransmitter(obj->serial.address); |
<> | 144:ef7eb2e8f9f7 | 516 | |
<> | 144:ef7eb2e8f9f7 | 517 | int n_word = 0; |
<> | 144:ef7eb2e8f9f7 | 518 | if (obj->serial.dma_usage_tx == DMA_USAGE_NEVER) { |
<> | 144:ef7eb2e8f9f7 | 519 | // Interrupt way |
<> | 144:ef7eb2e8f9f7 | 520 | n_word = serial_write_async(obj); |
<> | 144:ef7eb2e8f9f7 | 521 | serial_tx_enable_interrupt(obj, handler, 1); |
<> | 144:ef7eb2e8f9f7 | 522 | } else { |
<> | 144:ef7eb2e8f9f7 | 523 | // DMA way |
<> | 144:ef7eb2e8f9f7 | 524 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 525 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 526 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 527 | |
<> | 144:ef7eb2e8f9f7 | 528 | PDMA->CHCTL |= 1 << obj->serial.dma_chn_id_tx; // Enable this DMA channel |
<> | 144:ef7eb2e8f9f7 | 529 | PDMA_SetTransferMode(obj->serial.dma_chn_id_tx, |
<> | 144:ef7eb2e8f9f7 | 530 | ((struct nu_uart_var *) modinit->var)->pdma_perp_tx, // Peripheral connected to this PDMA |
<> | 144:ef7eb2e8f9f7 | 531 | 0, // Scatter-gather disabled |
<> | 144:ef7eb2e8f9f7 | 532 | 0); // Scatter-gather descriptor address |
<> | 144:ef7eb2e8f9f7 | 533 | PDMA_SetTransferCnt(obj->serial.dma_chn_id_tx, |
<> | 144:ef7eb2e8f9f7 | 534 | (tx_width == 8) ? PDMA_WIDTH_8 : (tx_width == 16) ? PDMA_WIDTH_16 : PDMA_WIDTH_32, |
<> | 144:ef7eb2e8f9f7 | 535 | tx_length); |
<> | 144:ef7eb2e8f9f7 | 536 | PDMA_SetTransferAddr(obj->serial.dma_chn_id_tx, |
<> | 144:ef7eb2e8f9f7 | 537 | ((uint32_t) tx) + (tx_width / 8) * tx_length, // NOTE: End of source address |
<> | 144:ef7eb2e8f9f7 | 538 | PDMA_SAR_INC, // Source address incremental |
<> | 144:ef7eb2e8f9f7 | 539 | (uint32_t) obj->serial.uart, // Destination address |
<> | 144:ef7eb2e8f9f7 | 540 | PDMA_DAR_FIX); // Destination address fixed |
<> | 144:ef7eb2e8f9f7 | 541 | PDMA_SetBurstType(obj->serial.dma_chn_id_tx, |
<> | 144:ef7eb2e8f9f7 | 542 | PDMA_REQ_SINGLE, // Single mode |
<> | 144:ef7eb2e8f9f7 | 543 | 0); // Burst size |
<> | 144:ef7eb2e8f9f7 | 544 | PDMA_EnableInt(obj->serial.dma_chn_id_tx, |
<> | 144:ef7eb2e8f9f7 | 545 | 0); // Interrupt type. No use here |
<> | 144:ef7eb2e8f9f7 | 546 | // Register DMA event handler |
<> | 144:ef7eb2e8f9f7 | 547 | dma_set_handler(obj->serial.dma_chn_id_tx, (uint32_t) uart_dma_handler_tx, (uint32_t) obj, DMA_EVENT_ALL); |
<> | 144:ef7eb2e8f9f7 | 548 | serial_tx_enable_interrupt(obj, handler, 1); |
<> | 144:ef7eb2e8f9f7 | 549 | ((UART_T *) NU_MODBASE(obj->serial.uart))->INTEN |= UART_INTEN_TXPDMAEN_Msk; // Start DMA transfer |
<> | 144:ef7eb2e8f9f7 | 550 | } |
<> | 144:ef7eb2e8f9f7 | 551 | |
<> | 144:ef7eb2e8f9f7 | 552 | return n_word; |
<> | 144:ef7eb2e8f9f7 | 553 | } |
<> | 144:ef7eb2e8f9f7 | 554 | |
<> | 144:ef7eb2e8f9f7 | 555 | void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_width, uint32_t handler, uint32_t event, uint8_t char_match, DMAUsage hint) |
<> | 144:ef7eb2e8f9f7 | 556 | { |
<> | 144:ef7eb2e8f9f7 | 557 | // NOTE: rx_width is deprecated. Assume its value is databits ceiled to the nearest number among 8, 16, and 32. |
<> | 144:ef7eb2e8f9f7 | 558 | rx_width = (obj->serial.databits <= 8) ? 8 : (obj->serial.databits <= 16) ? 16 : 32; |
<> | 144:ef7eb2e8f9f7 | 559 | |
<> | 144:ef7eb2e8f9f7 | 560 | MBED_ASSERT(rx_width == 8 || rx_width == 16 || rx_width == 32); |
<> | 144:ef7eb2e8f9f7 | 561 | |
<> | 144:ef7eb2e8f9f7 | 562 | obj->serial.dma_usage_rx = hint; |
<> | 144:ef7eb2e8f9f7 | 563 | serial_check_dma_usage(&obj->serial.dma_usage_rx, &obj->serial.dma_chn_id_rx); |
<> | 144:ef7eb2e8f9f7 | 564 | // DMA doesn't support char match, so fall back to IRQ if it is requested. |
<> | 144:ef7eb2e8f9f7 | 565 | if (obj->serial.dma_usage_rx != DMA_USAGE_NEVER && |
<> | 144:ef7eb2e8f9f7 | 566 | (event & SERIAL_EVENT_RX_CHARACTER_MATCH) && |
<> | 144:ef7eb2e8f9f7 | 567 | char_match != SERIAL_RESERVED_CHAR_MATCH) { |
<> | 144:ef7eb2e8f9f7 | 568 | obj->serial.dma_usage_rx = DMA_USAGE_NEVER; |
<> | 144:ef7eb2e8f9f7 | 569 | dma_channel_free(obj->serial.dma_chn_id_rx); |
<> | 144:ef7eb2e8f9f7 | 570 | obj->serial.dma_chn_id_rx = DMA_ERROR_OUT_OF_CHANNELS; |
<> | 144:ef7eb2e8f9f7 | 571 | } |
<> | 144:ef7eb2e8f9f7 | 572 | |
<> | 144:ef7eb2e8f9f7 | 573 | // UART IRQ is necessary for both interrupt way and DMA way |
<> | 144:ef7eb2e8f9f7 | 574 | serial_rx_enable_event(obj, event, 1); |
<> | 144:ef7eb2e8f9f7 | 575 | serial_rx_buffer_set(obj, rx, rx_length, rx_width); |
<> | 144:ef7eb2e8f9f7 | 576 | serial_rx_set_char_match(obj, char_match); |
<> | 144:ef7eb2e8f9f7 | 577 | //UART_HAL_DisableReceiver(obj->serial.address); |
<> | 144:ef7eb2e8f9f7 | 578 | //UART_HAL_FlushRxFifo(obj->serial.address); |
<> | 144:ef7eb2e8f9f7 | 579 | //UART_HAL_EnableReceiver(obj->serial.address); |
<> | 144:ef7eb2e8f9f7 | 580 | |
<> | 144:ef7eb2e8f9f7 | 581 | if (obj->serial.dma_usage_rx == DMA_USAGE_NEVER) { |
<> | 144:ef7eb2e8f9f7 | 582 | // Interrupt way |
<> | 144:ef7eb2e8f9f7 | 583 | serial_rx_enable_interrupt(obj, handler, 1); |
<> | 144:ef7eb2e8f9f7 | 584 | } else { |
<> | 144:ef7eb2e8f9f7 | 585 | // DMA way |
<> | 144:ef7eb2e8f9f7 | 586 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 587 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 588 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 589 | |
<> | 144:ef7eb2e8f9f7 | 590 | PDMA->CHCTL |= 1 << obj->serial.dma_chn_id_rx; // Enable this DMA channel |
<> | 144:ef7eb2e8f9f7 | 591 | PDMA_SetTransferMode(obj->serial.dma_chn_id_rx, |
<> | 144:ef7eb2e8f9f7 | 592 | ((struct nu_uart_var *) modinit->var)->pdma_perp_rx, // Peripheral connected to this PDMA |
<> | 144:ef7eb2e8f9f7 | 593 | 0, // Scatter-gather disabled |
<> | 144:ef7eb2e8f9f7 | 594 | 0); // Scatter-gather descriptor address |
<> | 144:ef7eb2e8f9f7 | 595 | PDMA_SetTransferCnt(obj->serial.dma_chn_id_rx, |
<> | 144:ef7eb2e8f9f7 | 596 | (rx_width == 8) ? PDMA_WIDTH_8 : (rx_width == 16) ? PDMA_WIDTH_16 : PDMA_WIDTH_32, |
<> | 144:ef7eb2e8f9f7 | 597 | rx_length); |
<> | 144:ef7eb2e8f9f7 | 598 | PDMA_SetTransferAddr(obj->serial.dma_chn_id_rx, |
<> | 144:ef7eb2e8f9f7 | 599 | (uint32_t) obj->serial.uart, // Source address |
<> | 144:ef7eb2e8f9f7 | 600 | PDMA_SAR_FIX, // Source address fixed |
<> | 144:ef7eb2e8f9f7 | 601 | ((uint32_t) rx) + (rx_width / 8) * rx_length, // NOTE: End of destination address |
<> | 144:ef7eb2e8f9f7 | 602 | PDMA_DAR_INC); // Destination address incremental |
<> | 144:ef7eb2e8f9f7 | 603 | PDMA_SetBurstType(obj->serial.dma_chn_id_rx, |
<> | 144:ef7eb2e8f9f7 | 604 | PDMA_REQ_SINGLE, // Single mode |
<> | 144:ef7eb2e8f9f7 | 605 | 0); // Burst size |
<> | 144:ef7eb2e8f9f7 | 606 | PDMA_EnableInt(obj->serial.dma_chn_id_rx, |
<> | 144:ef7eb2e8f9f7 | 607 | 0); // Interrupt type. No use here |
<> | 144:ef7eb2e8f9f7 | 608 | // Register DMA event handler |
<> | 144:ef7eb2e8f9f7 | 609 | dma_set_handler(obj->serial.dma_chn_id_rx, (uint32_t) uart_dma_handler_rx, (uint32_t) obj, DMA_EVENT_ALL); |
<> | 144:ef7eb2e8f9f7 | 610 | serial_rx_enable_interrupt(obj, handler, 1); |
<> | 144:ef7eb2e8f9f7 | 611 | ((UART_T *) NU_MODBASE(obj->serial.uart))->INTEN |= UART_INTEN_RXPDMAEN_Msk; // Start DMA transfer |
<> | 144:ef7eb2e8f9f7 | 612 | } |
<> | 144:ef7eb2e8f9f7 | 613 | } |
<> | 144:ef7eb2e8f9f7 | 614 | |
<> | 144:ef7eb2e8f9f7 | 615 | void serial_tx_abort_asynch(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 616 | { |
<> | 144:ef7eb2e8f9f7 | 617 | // Flush Tx FIFO. Otherwise, output data may get lost on this change. |
<> | 144:ef7eb2e8f9f7 | 618 | while (! UART_IS_TX_EMPTY(((UART_T *) obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 619 | |
<> | 144:ef7eb2e8f9f7 | 620 | if (obj->serial.dma_usage_tx != DMA_USAGE_NEVER) { |
<> | 144:ef7eb2e8f9f7 | 621 | if (obj->serial.dma_chn_id_tx != DMA_ERROR_OUT_OF_CHANNELS) { |
<> | 144:ef7eb2e8f9f7 | 622 | PDMA_DisableInt(obj->serial.dma_chn_id_tx, 0); |
<> | 144:ef7eb2e8f9f7 | 623 | // FIXME: Next PDMA transfer will fail with PDMA_STOP() called. Cause is unknown. |
<> | 144:ef7eb2e8f9f7 | 624 | //PDMA_STOP(obj->serial.dma_chn_id_tx); |
<> | 144:ef7eb2e8f9f7 | 625 | PDMA->CHCTL &= ~(1 << obj->serial.dma_chn_id_tx); |
<> | 144:ef7eb2e8f9f7 | 626 | } |
<> | 144:ef7eb2e8f9f7 | 627 | UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_TXPDMAEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 628 | } |
<> | 144:ef7eb2e8f9f7 | 629 | |
<> | 144:ef7eb2e8f9f7 | 630 | // Necessary for both interrupt way and DMA way |
<> | 144:ef7eb2e8f9f7 | 631 | serial_irq_set(obj, TxIrq, 0); |
<> | 144:ef7eb2e8f9f7 | 632 | // FIXME: more complete abort operation |
<> | 144:ef7eb2e8f9f7 | 633 | //UART_HAL_DisableTransmitter(obj->serial.serial.address); |
<> | 144:ef7eb2e8f9f7 | 634 | //UART_HAL_FlushTxFifo(obj->serial.serial.address); |
<> | 144:ef7eb2e8f9f7 | 635 | } |
<> | 144:ef7eb2e8f9f7 | 636 | |
<> | 144:ef7eb2e8f9f7 | 637 | void serial_rx_abort_asynch(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 638 | { |
<> | 144:ef7eb2e8f9f7 | 639 | if (obj->serial.dma_usage_rx != DMA_USAGE_NEVER) { |
<> | 144:ef7eb2e8f9f7 | 640 | if (obj->serial.dma_chn_id_rx != DMA_ERROR_OUT_OF_CHANNELS) { |
<> | 144:ef7eb2e8f9f7 | 641 | PDMA_DisableInt(obj->serial.dma_chn_id_rx, 0); |
<> | 144:ef7eb2e8f9f7 | 642 | // FIXME: Next PDMA transfer will fail with PDMA_STOP() called. Cause is unknown. |
<> | 144:ef7eb2e8f9f7 | 643 | //PDMA_STOP(obj->serial.dma_chn_id_rx); |
<> | 144:ef7eb2e8f9f7 | 644 | PDMA->CHCTL &= ~(1 << obj->serial.dma_chn_id_rx); |
<> | 144:ef7eb2e8f9f7 | 645 | } |
<> | 144:ef7eb2e8f9f7 | 646 | UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_RXPDMAEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 647 | } |
<> | 144:ef7eb2e8f9f7 | 648 | |
<> | 144:ef7eb2e8f9f7 | 649 | // Necessary for both interrupt way and DMA way |
<> | 144:ef7eb2e8f9f7 | 650 | serial_irq_set(obj, RxIrq, 0); |
<> | 144:ef7eb2e8f9f7 | 651 | // FIXME: more complete abort operation |
<> | 144:ef7eb2e8f9f7 | 652 | //UART_HAL_DisableReceiver(obj->serial.serial.address); |
<> | 144:ef7eb2e8f9f7 | 653 | //UART_HAL_FlushRxFifo(obj->serial.serial.address); |
<> | 144:ef7eb2e8f9f7 | 654 | } |
<> | 144:ef7eb2e8f9f7 | 655 | |
<> | 144:ef7eb2e8f9f7 | 656 | uint8_t serial_tx_active(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 657 | { |
<> | 144:ef7eb2e8f9f7 | 658 | return serial_is_irq_en(obj, TxIrq); |
<> | 144:ef7eb2e8f9f7 | 659 | } |
<> | 144:ef7eb2e8f9f7 | 660 | |
<> | 144:ef7eb2e8f9f7 | 661 | uint8_t serial_rx_active(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 662 | { |
<> | 144:ef7eb2e8f9f7 | 663 | return serial_is_irq_en(obj, RxIrq); |
<> | 144:ef7eb2e8f9f7 | 664 | } |
<> | 144:ef7eb2e8f9f7 | 665 | |
<> | 144:ef7eb2e8f9f7 | 666 | int serial_irq_handler_asynch(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 667 | { |
<> | 144:ef7eb2e8f9f7 | 668 | int event_rx = 0; |
<> | 144:ef7eb2e8f9f7 | 669 | int event_tx = 0; |
<> | 144:ef7eb2e8f9f7 | 670 | |
<> | 144:ef7eb2e8f9f7 | 671 | // Necessary for both interrup way and DMA way |
<> | 144:ef7eb2e8f9f7 | 672 | if (serial_is_irq_en(obj, RxIrq)) { |
<> | 144:ef7eb2e8f9f7 | 673 | event_rx = serial_rx_event_check(obj); |
<> | 144:ef7eb2e8f9f7 | 674 | if (event_rx) { |
<> | 144:ef7eb2e8f9f7 | 675 | serial_rx_abort_asynch(obj); |
<> | 144:ef7eb2e8f9f7 | 676 | } |
<> | 144:ef7eb2e8f9f7 | 677 | } |
<> | 144:ef7eb2e8f9f7 | 678 | |
<> | 144:ef7eb2e8f9f7 | 679 | if (serial_is_irq_en(obj, TxIrq)) { |
<> | 144:ef7eb2e8f9f7 | 680 | event_tx = serial_tx_event_check(obj); |
<> | 144:ef7eb2e8f9f7 | 681 | if (event_tx) { |
<> | 144:ef7eb2e8f9f7 | 682 | serial_tx_abort_asynch(obj); |
<> | 144:ef7eb2e8f9f7 | 683 | } |
<> | 144:ef7eb2e8f9f7 | 684 | } |
<> | 144:ef7eb2e8f9f7 | 685 | |
<> | 144:ef7eb2e8f9f7 | 686 | return (obj->serial.event & (event_rx | event_tx)); |
<> | 144:ef7eb2e8f9f7 | 687 | } |
<> | 144:ef7eb2e8f9f7 | 688 | |
<> | 144:ef7eb2e8f9f7 | 689 | int serial_allow_powerdown(void) |
<> | 144:ef7eb2e8f9f7 | 690 | { |
<> | 144:ef7eb2e8f9f7 | 691 | uint32_t modinit_mask = uart_modinit_mask; |
<> | 144:ef7eb2e8f9f7 | 692 | while (modinit_mask) { |
<> | 144:ef7eb2e8f9f7 | 693 | int uart_idx = nu_ctz(modinit_mask); |
<> | 144:ef7eb2e8f9f7 | 694 | const struct nu_modinit_s *modinit = uart_modinit_tab + uart_idx; |
<> | 144:ef7eb2e8f9f7 | 695 | if (modinit->modname != NC) { |
<> | 144:ef7eb2e8f9f7 | 696 | UART_T *uart_base = (UART_T *) NU_MODBASE(modinit->modname); |
<> | 144:ef7eb2e8f9f7 | 697 | // Disallow entering power-down mode if Tx FIFO has data to flush |
<> | 144:ef7eb2e8f9f7 | 698 | if (! UART_IS_TX_EMPTY((uart_base))) { |
<> | 144:ef7eb2e8f9f7 | 699 | return 0; |
<> | 144:ef7eb2e8f9f7 | 700 | } |
<> | 144:ef7eb2e8f9f7 | 701 | // Disallow entering power-down mode if async Rx transfer (not PDMA) is on-going |
<> | 144:ef7eb2e8f9f7 | 702 | if (uart_base->INTEN & (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)) { |
<> | 144:ef7eb2e8f9f7 | 703 | return 0; |
<> | 144:ef7eb2e8f9f7 | 704 | } |
<> | 144:ef7eb2e8f9f7 | 705 | // Disallow entering power-down mode if async Rx transfer (PDMA) is on-going |
<> | 144:ef7eb2e8f9f7 | 706 | if (uart_base->INTEN & UART_INTEN_RXPDMAEN_Msk) { |
<> | 144:ef7eb2e8f9f7 | 707 | return 0; |
<> | 144:ef7eb2e8f9f7 | 708 | } |
<> | 144:ef7eb2e8f9f7 | 709 | } |
<> | 144:ef7eb2e8f9f7 | 710 | modinit_mask &= ~(1 << uart_idx); |
<> | 144:ef7eb2e8f9f7 | 711 | } |
<> | 144:ef7eb2e8f9f7 | 712 | |
<> | 144:ef7eb2e8f9f7 | 713 | return 1; |
<> | 144:ef7eb2e8f9f7 | 714 | } |
<> | 144:ef7eb2e8f9f7 | 715 | |
<> | 144:ef7eb2e8f9f7 | 716 | static void uart0_vec_async(void) |
<> | 144:ef7eb2e8f9f7 | 717 | { |
<> | 144:ef7eb2e8f9f7 | 718 | uart_irq_async(uart0_var.obj); |
<> | 144:ef7eb2e8f9f7 | 719 | } |
<> | 144:ef7eb2e8f9f7 | 720 | |
<> | 144:ef7eb2e8f9f7 | 721 | static void uart1_vec_async(void) |
<> | 144:ef7eb2e8f9f7 | 722 | { |
<> | 144:ef7eb2e8f9f7 | 723 | uart_irq_async(uart1_var.obj); |
<> | 144:ef7eb2e8f9f7 | 724 | } |
<> | 144:ef7eb2e8f9f7 | 725 | |
<> | 144:ef7eb2e8f9f7 | 726 | static void uart2_vec_async(void) |
<> | 144:ef7eb2e8f9f7 | 727 | { |
<> | 144:ef7eb2e8f9f7 | 728 | uart_irq_async(uart2_var.obj); |
<> | 144:ef7eb2e8f9f7 | 729 | } |
<> | 144:ef7eb2e8f9f7 | 730 | |
<> | 144:ef7eb2e8f9f7 | 731 | static void uart3_vec_async(void) |
<> | 144:ef7eb2e8f9f7 | 732 | { |
<> | 144:ef7eb2e8f9f7 | 733 | uart_irq_async(uart3_var.obj); |
<> | 144:ef7eb2e8f9f7 | 734 | } |
<> | 144:ef7eb2e8f9f7 | 735 | |
<> | 144:ef7eb2e8f9f7 | 736 | static void uart4_vec_async(void) |
<> | 144:ef7eb2e8f9f7 | 737 | { |
<> | 144:ef7eb2e8f9f7 | 738 | uart_irq_async(uart4_var.obj); |
<> | 144:ef7eb2e8f9f7 | 739 | } |
<> | 144:ef7eb2e8f9f7 | 740 | |
<> | 144:ef7eb2e8f9f7 | 741 | static void uart5_vec_async(void) |
<> | 144:ef7eb2e8f9f7 | 742 | { |
<> | 144:ef7eb2e8f9f7 | 743 | uart_irq_async(uart5_var.obj); |
<> | 144:ef7eb2e8f9f7 | 744 | } |
<> | 144:ef7eb2e8f9f7 | 745 | |
<> | 144:ef7eb2e8f9f7 | 746 | static void uart_irq_async(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 747 | { |
<> | 144:ef7eb2e8f9f7 | 748 | if (serial_is_irq_en(obj, RxIrq)) { |
<> | 144:ef7eb2e8f9f7 | 749 | (*obj->serial.irq_handler_rx_async)(); |
<> | 144:ef7eb2e8f9f7 | 750 | } |
<> | 144:ef7eb2e8f9f7 | 751 | if (serial_is_irq_en(obj, TxIrq)) { |
<> | 144:ef7eb2e8f9f7 | 752 | (*obj->serial.irq_handler_tx_async)(); |
<> | 144:ef7eb2e8f9f7 | 753 | } |
<> | 144:ef7eb2e8f9f7 | 754 | } |
<> | 144:ef7eb2e8f9f7 | 755 | |
<> | 144:ef7eb2e8f9f7 | 756 | static void serial_rx_set_char_match(serial_t *obj, uint8_t char_match) |
<> | 144:ef7eb2e8f9f7 | 757 | { |
<> | 144:ef7eb2e8f9f7 | 758 | obj->char_match = char_match; |
<> | 144:ef7eb2e8f9f7 | 759 | obj->char_found = 0; |
<> | 144:ef7eb2e8f9f7 | 760 | } |
<> | 144:ef7eb2e8f9f7 | 761 | |
<> | 144:ef7eb2e8f9f7 | 762 | static void serial_tx_enable_event(serial_t *obj, int event, uint8_t enable) |
<> | 144:ef7eb2e8f9f7 | 763 | { |
<> | 144:ef7eb2e8f9f7 | 764 | obj->serial.event &= ~SERIAL_EVENT_TX_MASK; |
<> | 144:ef7eb2e8f9f7 | 765 | obj->serial.event |= (event & SERIAL_EVENT_TX_MASK); |
<> | 144:ef7eb2e8f9f7 | 766 | |
<> | 144:ef7eb2e8f9f7 | 767 | //if (event & SERIAL_EVENT_TX_COMPLETE) { |
<> | 144:ef7eb2e8f9f7 | 768 | //} |
<> | 144:ef7eb2e8f9f7 | 769 | } |
<> | 144:ef7eb2e8f9f7 | 770 | |
<> | 144:ef7eb2e8f9f7 | 771 | static void serial_rx_enable_event(serial_t *obj, int event, uint8_t enable) |
<> | 144:ef7eb2e8f9f7 | 772 | { |
<> | 144:ef7eb2e8f9f7 | 773 | obj->serial.event &= ~SERIAL_EVENT_RX_MASK; |
<> | 144:ef7eb2e8f9f7 | 774 | obj->serial.event |= (event & SERIAL_EVENT_RX_MASK); |
<> | 144:ef7eb2e8f9f7 | 775 | |
<> | 144:ef7eb2e8f9f7 | 776 | //if (event & SERIAL_EVENT_RX_COMPLETE) { |
<> | 144:ef7eb2e8f9f7 | 777 | //} |
<> | 144:ef7eb2e8f9f7 | 778 | //if (event & SERIAL_EVENT_RX_OVERRUN_ERROR) { |
<> | 144:ef7eb2e8f9f7 | 779 | //} |
<> | 144:ef7eb2e8f9f7 | 780 | if (event & SERIAL_EVENT_RX_FRAMING_ERROR) { |
<> | 144:ef7eb2e8f9f7 | 781 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_RLSIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 782 | } |
<> | 144:ef7eb2e8f9f7 | 783 | if (event & SERIAL_EVENT_RX_PARITY_ERROR) { |
<> | 144:ef7eb2e8f9f7 | 784 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_RLSIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 785 | } |
<> | 144:ef7eb2e8f9f7 | 786 | if (event & SERIAL_EVENT_RX_OVERFLOW) { |
<> | 144:ef7eb2e8f9f7 | 787 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_BUFERRIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 788 | } |
<> | 144:ef7eb2e8f9f7 | 789 | //if (event & SERIAL_EVENT_RX_CHARACTER_MATCH) { |
<> | 144:ef7eb2e8f9f7 | 790 | //} |
<> | 144:ef7eb2e8f9f7 | 791 | } |
<> | 144:ef7eb2e8f9f7 | 792 | |
<> | 144:ef7eb2e8f9f7 | 793 | static int serial_is_tx_complete(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 794 | { |
<> | 144:ef7eb2e8f9f7 | 795 | // NOTE: Exclude tx fifo empty check due to no such interrupt on DMA way |
<> | 144:ef7eb2e8f9f7 | 796 | //return (obj->tx_buff.pos == obj->tx_buff.length) && UART_GET_TX_EMPTY(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 797 | // FIXME: Premature abort??? |
<> | 144:ef7eb2e8f9f7 | 798 | return (obj->tx_buff.pos == obj->tx_buff.length); |
<> | 144:ef7eb2e8f9f7 | 799 | } |
<> | 144:ef7eb2e8f9f7 | 800 | |
<> | 144:ef7eb2e8f9f7 | 801 | static int serial_is_rx_complete(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 802 | { |
<> | 144:ef7eb2e8f9f7 | 803 | //return (obj->rx_buff.pos == obj->rx_buff.length) && UART_GET_RX_EMPTY(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 804 | return (obj->rx_buff.pos == obj->rx_buff.length); |
<> | 144:ef7eb2e8f9f7 | 805 | } |
<> | 144:ef7eb2e8f9f7 | 806 | |
<> | 144:ef7eb2e8f9f7 | 807 | static uint32_t serial_tx_event_check(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 808 | { |
<> | 144:ef7eb2e8f9f7 | 809 | UART_T *uart_base = (UART_T *) NU_MODBASE(obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 810 | |
<> | 144:ef7eb2e8f9f7 | 811 | if (uart_base->INTSTS & UART_INTSTS_THREINT_Msk) { |
<> | 144:ef7eb2e8f9f7 | 812 | // Simulate clear of the interrupt flag. Temporarily disable the interrupt here and to be recovered on next write. |
<> | 144:ef7eb2e8f9f7 | 813 | UART_DISABLE_INT(uart_base, UART_INTEN_THREIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 814 | } |
<> | 144:ef7eb2e8f9f7 | 815 | |
<> | 144:ef7eb2e8f9f7 | 816 | uint32_t event = 0; |
<> | 144:ef7eb2e8f9f7 | 817 | |
<> | 144:ef7eb2e8f9f7 | 818 | if (obj->serial.dma_usage_tx == DMA_USAGE_NEVER) { |
<> | 144:ef7eb2e8f9f7 | 819 | serial_write_async(obj); |
<> | 144:ef7eb2e8f9f7 | 820 | } |
<> | 144:ef7eb2e8f9f7 | 821 | |
<> | 144:ef7eb2e8f9f7 | 822 | if (serial_is_tx_complete(obj)) { |
<> | 144:ef7eb2e8f9f7 | 823 | event |= SERIAL_EVENT_TX_COMPLETE; |
<> | 144:ef7eb2e8f9f7 | 824 | } |
<> | 144:ef7eb2e8f9f7 | 825 | |
<> | 144:ef7eb2e8f9f7 | 826 | return event; |
<> | 144:ef7eb2e8f9f7 | 827 | } |
<> | 144:ef7eb2e8f9f7 | 828 | |
<> | 144:ef7eb2e8f9f7 | 829 | static uint32_t serial_rx_event_check(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 830 | { |
<> | 144:ef7eb2e8f9f7 | 831 | UART_T *uart_base = (UART_T *) NU_MODBASE(obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 832 | |
<> | 144:ef7eb2e8f9f7 | 833 | if (uart_base->INTSTS & (UART_INTSTS_RDAINT_Msk | UART_INTSTS_RXTOINT_Msk)) { |
<> | 144:ef7eb2e8f9f7 | 834 | // Simulate clear of the interrupt flag. Temporarily disable the interrupt here and to be recovered on next read. |
<> | 144:ef7eb2e8f9f7 | 835 | UART_DISABLE_INT(uart_base, (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)); |
<> | 144:ef7eb2e8f9f7 | 836 | } |
<> | 144:ef7eb2e8f9f7 | 837 | |
<> | 144:ef7eb2e8f9f7 | 838 | uint32_t event = 0; |
<> | 144:ef7eb2e8f9f7 | 839 | |
<> | 144:ef7eb2e8f9f7 | 840 | if (uart_base->FIFOSTS & UART_FIFOSTS_BIF_Msk) { |
<> | 144:ef7eb2e8f9f7 | 841 | uart_base->FIFOSTS = UART_FIFOSTS_BIF_Msk; |
<> | 144:ef7eb2e8f9f7 | 842 | } |
<> | 144:ef7eb2e8f9f7 | 843 | if (uart_base->FIFOSTS & UART_FIFOSTS_FEF_Msk) { |
<> | 144:ef7eb2e8f9f7 | 844 | uart_base->FIFOSTS = UART_FIFOSTS_FEF_Msk; |
<> | 144:ef7eb2e8f9f7 | 845 | event |= SERIAL_EVENT_RX_FRAMING_ERROR; |
<> | 144:ef7eb2e8f9f7 | 846 | } |
<> | 144:ef7eb2e8f9f7 | 847 | if (uart_base->FIFOSTS & UART_FIFOSTS_PEF_Msk) { |
<> | 144:ef7eb2e8f9f7 | 848 | uart_base->FIFOSTS = UART_FIFOSTS_PEF_Msk; |
<> | 144:ef7eb2e8f9f7 | 849 | event |= SERIAL_EVENT_RX_PARITY_ERROR; |
<> | 144:ef7eb2e8f9f7 | 850 | } |
<> | 144:ef7eb2e8f9f7 | 851 | |
<> | 144:ef7eb2e8f9f7 | 852 | if (uart_base->FIFOSTS & UART_FIFOSTS_RXOVIF_Msk) { |
<> | 144:ef7eb2e8f9f7 | 853 | uart_base->FIFOSTS = UART_FIFOSTS_RXOVIF_Msk; |
<> | 144:ef7eb2e8f9f7 | 854 | event |= SERIAL_EVENT_RX_OVERFLOW; |
<> | 144:ef7eb2e8f9f7 | 855 | } |
<> | 144:ef7eb2e8f9f7 | 856 | |
<> | 144:ef7eb2e8f9f7 | 857 | if (obj->serial.dma_usage_rx == DMA_USAGE_NEVER) { |
<> | 144:ef7eb2e8f9f7 | 858 | serial_read_async(obj); |
<> | 144:ef7eb2e8f9f7 | 859 | } |
<> | 144:ef7eb2e8f9f7 | 860 | |
<> | 144:ef7eb2e8f9f7 | 861 | if (serial_is_rx_complete(obj)) { |
<> | 144:ef7eb2e8f9f7 | 862 | event |= SERIAL_EVENT_RX_COMPLETE; |
<> | 144:ef7eb2e8f9f7 | 863 | } |
<> | 144:ef7eb2e8f9f7 | 864 | if ((obj->char_match != SERIAL_RESERVED_CHAR_MATCH) && obj->char_found) { |
<> | 144:ef7eb2e8f9f7 | 865 | event |= SERIAL_EVENT_RX_CHARACTER_MATCH; |
<> | 144:ef7eb2e8f9f7 | 866 | // FIXME: Timing to reset char_found? |
<> | 144:ef7eb2e8f9f7 | 867 | //obj->char_found = 0; |
<> | 144:ef7eb2e8f9f7 | 868 | } |
<> | 144:ef7eb2e8f9f7 | 869 | |
<> | 144:ef7eb2e8f9f7 | 870 | return event; |
<> | 144:ef7eb2e8f9f7 | 871 | } |
<> | 144:ef7eb2e8f9f7 | 872 | |
<> | 144:ef7eb2e8f9f7 | 873 | static void uart_dma_handler_tx(uint32_t id, uint32_t event_dma) |
<> | 144:ef7eb2e8f9f7 | 874 | { |
<> | 144:ef7eb2e8f9f7 | 875 | serial_t *obj = (serial_t *) id; |
<> | 144:ef7eb2e8f9f7 | 876 | |
<> | 144:ef7eb2e8f9f7 | 877 | // FIXME: Pass this error to caller |
<> | 144:ef7eb2e8f9f7 | 878 | if (event_dma & DMA_EVENT_ABORT) { |
<> | 144:ef7eb2e8f9f7 | 879 | } |
<> | 144:ef7eb2e8f9f7 | 880 | // Expect UART IRQ will catch this transfer done event |
<> | 144:ef7eb2e8f9f7 | 881 | if (event_dma & DMA_EVENT_TRANSFER_DONE) { |
<> | 144:ef7eb2e8f9f7 | 882 | obj->tx_buff.pos = obj->tx_buff.length; |
<> | 144:ef7eb2e8f9f7 | 883 | } |
<> | 144:ef7eb2e8f9f7 | 884 | // FIXME: Pass this error to caller |
<> | 144:ef7eb2e8f9f7 | 885 | if (event_dma & DMA_EVENT_TIMEOUT) { |
<> | 144:ef7eb2e8f9f7 | 886 | } |
<> | 144:ef7eb2e8f9f7 | 887 | |
<> | 144:ef7eb2e8f9f7 | 888 | uart_irq_async(obj); |
<> | 144:ef7eb2e8f9f7 | 889 | } |
<> | 144:ef7eb2e8f9f7 | 890 | |
<> | 144:ef7eb2e8f9f7 | 891 | static void uart_dma_handler_rx(uint32_t id, uint32_t event_dma) |
<> | 144:ef7eb2e8f9f7 | 892 | { |
<> | 144:ef7eb2e8f9f7 | 893 | serial_t *obj = (serial_t *) id; |
<> | 144:ef7eb2e8f9f7 | 894 | |
<> | 144:ef7eb2e8f9f7 | 895 | // FIXME: Pass this error to caller |
<> | 144:ef7eb2e8f9f7 | 896 | if (event_dma & DMA_EVENT_ABORT) { |
<> | 144:ef7eb2e8f9f7 | 897 | } |
<> | 144:ef7eb2e8f9f7 | 898 | // Expect UART IRQ will catch this transfer done event |
<> | 144:ef7eb2e8f9f7 | 899 | if (event_dma & DMA_EVENT_TRANSFER_DONE) { |
<> | 144:ef7eb2e8f9f7 | 900 | obj->rx_buff.pos = obj->rx_buff.length; |
<> | 144:ef7eb2e8f9f7 | 901 | } |
<> | 144:ef7eb2e8f9f7 | 902 | // FIXME: Pass this error to caller |
<> | 144:ef7eb2e8f9f7 | 903 | if (event_dma & DMA_EVENT_TIMEOUT) { |
<> | 144:ef7eb2e8f9f7 | 904 | } |
<> | 144:ef7eb2e8f9f7 | 905 | |
<> | 144:ef7eb2e8f9f7 | 906 | uart_irq_async(obj); |
<> | 144:ef7eb2e8f9f7 | 907 | } |
<> | 144:ef7eb2e8f9f7 | 908 | |
<> | 144:ef7eb2e8f9f7 | 909 | static int serial_write_async(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 910 | { |
<> | 144:ef7eb2e8f9f7 | 911 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 912 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 913 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 914 | |
<> | 144:ef7eb2e8f9f7 | 915 | UART_T *uart_base = (UART_T *) NU_MODBASE(obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 916 | |
<> | 144:ef7eb2e8f9f7 | 917 | uint32_t tx_fifo_max = ((struct nu_uart_var *) modinit->var)->fifo_size_tx; |
<> | 144:ef7eb2e8f9f7 | 918 | uint32_t tx_fifo_busy = (uart_base->FIFOSTS & UART_FIFOSTS_TXPTR_Msk) >> UART_FIFOSTS_TXPTR_Pos; |
<> | 144:ef7eb2e8f9f7 | 919 | if (uart_base->FIFOSTS & UART_FIFOSTS_TXFULL_Msk) { |
<> | 144:ef7eb2e8f9f7 | 920 | tx_fifo_busy = tx_fifo_max; |
<> | 144:ef7eb2e8f9f7 | 921 | } |
<> | 144:ef7eb2e8f9f7 | 922 | uint32_t tx_fifo_free = tx_fifo_max - tx_fifo_busy; |
<> | 144:ef7eb2e8f9f7 | 923 | if (tx_fifo_free == 0) { |
<> | 144:ef7eb2e8f9f7 | 924 | // Simulate clear of the interrupt flag |
<> | 144:ef7eb2e8f9f7 | 925 | if (obj->serial.inten_msk & UART_INTEN_THREIEN_Msk) { |
<> | 144:ef7eb2e8f9f7 | 926 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_THREIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 927 | } |
<> | 144:ef7eb2e8f9f7 | 928 | return 0; |
<> | 144:ef7eb2e8f9f7 | 929 | } |
<> | 144:ef7eb2e8f9f7 | 930 | |
<> | 144:ef7eb2e8f9f7 | 931 | uint32_t bytes_per_word = obj->tx_buff.width / 8; |
<> | 144:ef7eb2e8f9f7 | 932 | |
<> | 144:ef7eb2e8f9f7 | 933 | uint8_t *tx = (uint8_t *)(obj->tx_buff.buffer) + bytes_per_word * obj->tx_buff.pos; |
<> | 144:ef7eb2e8f9f7 | 934 | int n_words = 0; |
<> | 144:ef7eb2e8f9f7 | 935 | while (obj->tx_buff.pos < obj->tx_buff.length && tx_fifo_free >= bytes_per_word) { |
<> | 144:ef7eb2e8f9f7 | 936 | switch (bytes_per_word) { |
<> | 144:ef7eb2e8f9f7 | 937 | case 4: |
<> | 144:ef7eb2e8f9f7 | 938 | UART_WRITE(((UART_T *) NU_MODBASE(obj->serial.uart)), *tx ++); |
<> | 144:ef7eb2e8f9f7 | 939 | UART_WRITE(((UART_T *) NU_MODBASE(obj->serial.uart)), *tx ++); |
<> | 144:ef7eb2e8f9f7 | 940 | case 2: |
<> | 144:ef7eb2e8f9f7 | 941 | UART_WRITE(((UART_T *) NU_MODBASE(obj->serial.uart)), *tx ++); |
<> | 144:ef7eb2e8f9f7 | 942 | case 1: |
<> | 144:ef7eb2e8f9f7 | 943 | UART_WRITE(((UART_T *) NU_MODBASE(obj->serial.uart)), *tx ++); |
<> | 144:ef7eb2e8f9f7 | 944 | } |
<> | 144:ef7eb2e8f9f7 | 945 | |
<> | 144:ef7eb2e8f9f7 | 946 | n_words ++; |
<> | 144:ef7eb2e8f9f7 | 947 | tx_fifo_free -= bytes_per_word; |
<> | 144:ef7eb2e8f9f7 | 948 | obj->tx_buff.pos ++; |
<> | 144:ef7eb2e8f9f7 | 949 | } |
<> | 144:ef7eb2e8f9f7 | 950 | |
<> | 144:ef7eb2e8f9f7 | 951 | if (n_words) { |
<> | 144:ef7eb2e8f9f7 | 952 | // Simulate clear of the interrupt flag |
<> | 144:ef7eb2e8f9f7 | 953 | if (obj->serial.inten_msk & UART_INTEN_THREIEN_Msk) { |
<> | 144:ef7eb2e8f9f7 | 954 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_THREIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 955 | } |
<> | 144:ef7eb2e8f9f7 | 956 | } |
<> | 144:ef7eb2e8f9f7 | 957 | |
<> | 144:ef7eb2e8f9f7 | 958 | return n_words; |
<> | 144:ef7eb2e8f9f7 | 959 | } |
<> | 144:ef7eb2e8f9f7 | 960 | |
<> | 144:ef7eb2e8f9f7 | 961 | static int serial_read_async(serial_t *obj) |
<> | 144:ef7eb2e8f9f7 | 962 | { |
<> | 144:ef7eb2e8f9f7 | 963 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 964 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 965 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 966 | |
<> | 144:ef7eb2e8f9f7 | 967 | uint32_t rx_fifo_busy = (((UART_T *) NU_MODBASE(obj->serial.uart))->FIFOSTS & UART_FIFOSTS_RXPTR_Msk) >> UART_FIFOSTS_RXPTR_Pos; |
<> | 144:ef7eb2e8f9f7 | 968 | //uint32_t rx_fifo_free = ((struct nu_uart_var *) modinit->var)->fifo_size_rx - rx_fifo_busy; |
<> | 144:ef7eb2e8f9f7 | 969 | //if (rx_fifo_free == 0) { |
<> | 144:ef7eb2e8f9f7 | 970 | // return 0; |
<> | 144:ef7eb2e8f9f7 | 971 | //} |
<> | 144:ef7eb2e8f9f7 | 972 | |
<> | 144:ef7eb2e8f9f7 | 973 | uint32_t bytes_per_word = obj->rx_buff.width / 8; |
<> | 144:ef7eb2e8f9f7 | 974 | |
<> | 144:ef7eb2e8f9f7 | 975 | uint8_t *rx = (uint8_t *)(obj->rx_buff.buffer) + bytes_per_word * obj->rx_buff.pos; |
<> | 144:ef7eb2e8f9f7 | 976 | int n_words = 0; |
<> | 144:ef7eb2e8f9f7 | 977 | while (obj->rx_buff.pos < obj->rx_buff.length && rx_fifo_busy >= bytes_per_word) { |
<> | 144:ef7eb2e8f9f7 | 978 | switch (bytes_per_word) { |
<> | 144:ef7eb2e8f9f7 | 979 | case 4: |
<> | 144:ef7eb2e8f9f7 | 980 | *rx ++ = UART_READ(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 981 | *rx ++ = UART_READ(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 982 | case 2: |
<> | 144:ef7eb2e8f9f7 | 983 | *rx ++ = UART_READ(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 984 | case 1: |
<> | 144:ef7eb2e8f9f7 | 985 | *rx ++ = UART_READ(((UART_T *) NU_MODBASE(obj->serial.uart))); |
<> | 144:ef7eb2e8f9f7 | 986 | } |
<> | 144:ef7eb2e8f9f7 | 987 | |
<> | 144:ef7eb2e8f9f7 | 988 | n_words ++; |
<> | 144:ef7eb2e8f9f7 | 989 | rx_fifo_busy -= bytes_per_word; |
<> | 144:ef7eb2e8f9f7 | 990 | obj->rx_buff.pos ++; |
<> | 144:ef7eb2e8f9f7 | 991 | |
<> | 144:ef7eb2e8f9f7 | 992 | if ((obj->serial.event & SERIAL_EVENT_RX_CHARACTER_MATCH) && |
<> | 144:ef7eb2e8f9f7 | 993 | obj->char_match != SERIAL_RESERVED_CHAR_MATCH) { |
<> | 144:ef7eb2e8f9f7 | 994 | uint8_t *rx_cmp = rx; |
<> | 144:ef7eb2e8f9f7 | 995 | switch (bytes_per_word) { |
<> | 144:ef7eb2e8f9f7 | 996 | case 4: |
<> | 144:ef7eb2e8f9f7 | 997 | rx_cmp -= 2; |
<> | 144:ef7eb2e8f9f7 | 998 | case 2: |
<> | 144:ef7eb2e8f9f7 | 999 | rx_cmp --; |
<> | 144:ef7eb2e8f9f7 | 1000 | case 1: |
<> | 144:ef7eb2e8f9f7 | 1001 | rx_cmp --; |
<> | 144:ef7eb2e8f9f7 | 1002 | } |
<> | 144:ef7eb2e8f9f7 | 1003 | if (*rx_cmp == obj->char_match) { |
<> | 144:ef7eb2e8f9f7 | 1004 | obj->char_found = 1; |
<> | 144:ef7eb2e8f9f7 | 1005 | break; |
<> | 144:ef7eb2e8f9f7 | 1006 | } |
<> | 144:ef7eb2e8f9f7 | 1007 | } |
<> | 144:ef7eb2e8f9f7 | 1008 | } |
<> | 144:ef7eb2e8f9f7 | 1009 | |
<> | 144:ef7eb2e8f9f7 | 1010 | if (n_words) { |
<> | 144:ef7eb2e8f9f7 | 1011 | // Simulate clear of the interrupt flag |
<> | 144:ef7eb2e8f9f7 | 1012 | if (obj->serial.inten_msk & (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)) { |
<> | 144:ef7eb2e8f9f7 | 1013 | UART_ENABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk)); |
<> | 144:ef7eb2e8f9f7 | 1014 | } |
<> | 144:ef7eb2e8f9f7 | 1015 | } |
<> | 144:ef7eb2e8f9f7 | 1016 | |
<> | 144:ef7eb2e8f9f7 | 1017 | return n_words; |
<> | 144:ef7eb2e8f9f7 | 1018 | } |
<> | 144:ef7eb2e8f9f7 | 1019 | |
<> | 144:ef7eb2e8f9f7 | 1020 | static void serial_tx_buffer_set(serial_t *obj, const void *tx, size_t length, uint8_t width) |
<> | 144:ef7eb2e8f9f7 | 1021 | { |
<> | 144:ef7eb2e8f9f7 | 1022 | obj->tx_buff.buffer = (void *) tx; |
<> | 144:ef7eb2e8f9f7 | 1023 | obj->tx_buff.length = length; |
<> | 144:ef7eb2e8f9f7 | 1024 | obj->tx_buff.pos = 0; |
<> | 144:ef7eb2e8f9f7 | 1025 | obj->tx_buff.width = width; |
<> | 144:ef7eb2e8f9f7 | 1026 | } |
<> | 144:ef7eb2e8f9f7 | 1027 | |
<> | 144:ef7eb2e8f9f7 | 1028 | static void serial_rx_buffer_set(serial_t *obj, void *rx, size_t length, uint8_t width) |
<> | 144:ef7eb2e8f9f7 | 1029 | { |
<> | 144:ef7eb2e8f9f7 | 1030 | obj->rx_buff.buffer = rx; |
<> | 144:ef7eb2e8f9f7 | 1031 | obj->rx_buff.length = length; |
<> | 144:ef7eb2e8f9f7 | 1032 | obj->rx_buff.pos = 0; |
<> | 144:ef7eb2e8f9f7 | 1033 | obj->rx_buff.width = width; |
<> | 144:ef7eb2e8f9f7 | 1034 | } |
<> | 144:ef7eb2e8f9f7 | 1035 | |
<> | 144:ef7eb2e8f9f7 | 1036 | static void serial_tx_enable_interrupt(serial_t *obj, uint32_t handler, uint8_t enable) |
<> | 144:ef7eb2e8f9f7 | 1037 | { |
<> | 144:ef7eb2e8f9f7 | 1038 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 1039 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 1040 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 1041 | |
<> | 144:ef7eb2e8f9f7 | 1042 | // Necessary for both interrupt way and DMA way |
<> | 144:ef7eb2e8f9f7 | 1043 | ((struct nu_uart_var *) modinit->var)->obj = obj; |
<> | 144:ef7eb2e8f9f7 | 1044 | // With our own async vector, tx/rx handlers can be different. |
<> | 144:ef7eb2e8f9f7 | 1045 | obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec_async; |
<> | 144:ef7eb2e8f9f7 | 1046 | obj->serial.irq_handler_tx_async = (void (*)(void)) handler; |
<> | 144:ef7eb2e8f9f7 | 1047 | serial_irq_set(obj, TxIrq, enable); |
<> | 144:ef7eb2e8f9f7 | 1048 | } |
<> | 144:ef7eb2e8f9f7 | 1049 | |
<> | 144:ef7eb2e8f9f7 | 1050 | static void serial_rx_enable_interrupt(serial_t *obj, uint32_t handler, uint8_t enable) |
<> | 144:ef7eb2e8f9f7 | 1051 | { |
<> | 144:ef7eb2e8f9f7 | 1052 | const struct nu_modinit_s *modinit = get_modinit(obj->serial.uart, uart_modinit_tab); |
<> | 144:ef7eb2e8f9f7 | 1053 | MBED_ASSERT(modinit != NULL); |
<> | 144:ef7eb2e8f9f7 | 1054 | MBED_ASSERT(modinit->modname == obj->serial.uart); |
<> | 144:ef7eb2e8f9f7 | 1055 | |
<> | 144:ef7eb2e8f9f7 | 1056 | // Necessary for both interrupt way and DMA way |
<> | 144:ef7eb2e8f9f7 | 1057 | ((struct nu_uart_var *) modinit->var)->obj = obj; |
<> | 144:ef7eb2e8f9f7 | 1058 | // With our own async vector, tx/rx handlers can be different. |
<> | 144:ef7eb2e8f9f7 | 1059 | obj->serial.vec = ((struct nu_uart_var *) modinit->var)->vec_async; |
<> | 144:ef7eb2e8f9f7 | 1060 | obj->serial.irq_handler_rx_async = (void (*) (void)) handler; |
<> | 144:ef7eb2e8f9f7 | 1061 | serial_irq_set(obj, RxIrq, enable); |
<> | 144:ef7eb2e8f9f7 | 1062 | } |
<> | 144:ef7eb2e8f9f7 | 1063 | |
<> | 144:ef7eb2e8f9f7 | 1064 | static void serial_check_dma_usage(DMAUsage *dma_usage, int *dma_ch) |
<> | 144:ef7eb2e8f9f7 | 1065 | { |
<> | 144:ef7eb2e8f9f7 | 1066 | if (*dma_usage != DMA_USAGE_NEVER) { |
<> | 144:ef7eb2e8f9f7 | 1067 | if (*dma_ch == DMA_ERROR_OUT_OF_CHANNELS) { |
<> | 144:ef7eb2e8f9f7 | 1068 | *dma_ch = dma_channel_allocate(DMA_CAP_NONE); |
<> | 144:ef7eb2e8f9f7 | 1069 | } |
<> | 144:ef7eb2e8f9f7 | 1070 | if (*dma_ch == DMA_ERROR_OUT_OF_CHANNELS) { |
<> | 144:ef7eb2e8f9f7 | 1071 | *dma_usage = DMA_USAGE_NEVER; |
<> | 144:ef7eb2e8f9f7 | 1072 | } |
<> | 144:ef7eb2e8f9f7 | 1073 | } |
<> | 144:ef7eb2e8f9f7 | 1074 | else { |
<> | 144:ef7eb2e8f9f7 | 1075 | dma_channel_free(*dma_ch); |
<> | 144:ef7eb2e8f9f7 | 1076 | *dma_ch = DMA_ERROR_OUT_OF_CHANNELS; |
<> | 144:ef7eb2e8f9f7 | 1077 | } |
<> | 144:ef7eb2e8f9f7 | 1078 | } |
<> | 144:ef7eb2e8f9f7 | 1079 | |
<> | 144:ef7eb2e8f9f7 | 1080 | static int serial_is_irq_en(serial_t *obj, SerialIrq irq) |
<> | 144:ef7eb2e8f9f7 | 1081 | { |
<> | 144:ef7eb2e8f9f7 | 1082 | int inten_msk = 0; |
<> | 144:ef7eb2e8f9f7 | 1083 | |
<> | 144:ef7eb2e8f9f7 | 1084 | switch (irq) { |
<> | 144:ef7eb2e8f9f7 | 1085 | case RxIrq: |
<> | 144:ef7eb2e8f9f7 | 1086 | inten_msk = obj->serial.inten_msk & (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk); |
<> | 144:ef7eb2e8f9f7 | 1087 | break; |
<> | 144:ef7eb2e8f9f7 | 1088 | case TxIrq: |
<> | 144:ef7eb2e8f9f7 | 1089 | inten_msk = obj->serial.inten_msk & UART_INTEN_THREIEN_Msk; |
<> | 144:ef7eb2e8f9f7 | 1090 | break; |
<> | 144:ef7eb2e8f9f7 | 1091 | } |
<> | 144:ef7eb2e8f9f7 | 1092 | |
<> | 144:ef7eb2e8f9f7 | 1093 | return !! inten_msk; |
<> | 144:ef7eb2e8f9f7 | 1094 | } |
<> | 144:ef7eb2e8f9f7 | 1095 | |
<> | 144:ef7eb2e8f9f7 | 1096 | #endif // #if DEVICE_SERIAL_ASYNCH |
<> | 144:ef7eb2e8f9f7 | 1097 | #endif // #if DEVICE_SERIAL |