From 29d8974fe20c8d9d35adbcced625d661e51a6c26 Mon Sep 17 00:00:00 2001 From: "(no author)" <(no author)@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> Date: Sat, 9 Sep 2006 17:20:40 +0000 Subject: - tons of compile fixes for untested PICC code git-svn-id: https://svn.openpcd.org:2342/trunk@160 6dc7ffe9-61d6-0310-9af1-9938baff3ed1 --- openpcd/firmware/Makefile | 4 +- openpcd/firmware/src/picc/adc.c | 112 +++++++++++++++++++++++++++++ openpcd/firmware/src/picc/decoder.c | 15 ++-- openpcd/firmware/src/picc/decoder.h | 8 +-- openpcd/firmware/src/picc/decoder_miller.c | 11 +-- openpcd/firmware/src/picc/decoder_nrzl.c | 8 ++- openpcd/firmware/src/picc/main_openpicc.c | 1 + openpcd/firmware/src/picc/ssc_picc.c | 3 +- 8 files changed, 142 insertions(+), 20 deletions(-) create mode 100644 openpcd/firmware/src/picc/adc.c (limited to 'openpcd/firmware') diff --git a/openpcd/firmware/Makefile b/openpcd/firmware/Makefile index 1098c4f..f4ff886 100644 --- a/openpcd/firmware/Makefile +++ b/openpcd/firmware/Makefile @@ -97,7 +97,9 @@ SRCARM += src/pcd/rc632.c src/pcd/rc632_highlevel.c \ SRCARM += src/pcd/$(TARGET).c else # PICC support code -SRCARM += src/picc/tc_fdt.c src/picc/ssc_picc.c +SRCARM += src/picc/tc_fdt.c src/picc/ssc_picc.c src/picc/adc.c \ + src/picc/decoder.c src/picc/decoder_miller.c \ + src/picc/decoder_nrzl.c # finally, the actual main application SRCARM += src/picc/$(TARGET).c endif diff --git a/openpcd/firmware/src/picc/adc.c b/openpcd/firmware/src/picc/adc.c new file mode 100644 index 0000000..1438a08 --- /dev/null +++ b/openpcd/firmware/src/picc/adc.c @@ -0,0 +1,112 @@ +/* AT91SAM7 ADC controller routines for OpenPCD / OpenPICC + * (C) 2006 by Harald Welte + * + */ + +#include +#include +#include +#include +#include +#include + +#include +#include "../openpcd.h" +#include + +#define OPENPICC_ADC_CH_FIELDSTR AT91C_ADC_CH4 +#define OPENPICC_ADC_CH_PLL_DEM AT91C_ADC_CH5 + +static const AT91PS_ADC adc = AT91C_BASE_ADC; + +enum adc_states { + ADC_NONE, + ADC_READ_CONTINUOUS, + ADC_READ_CONTINUOUS_USB, + ADC_READ_SINGLE, +}; + +struct adc_state { + enum adc_states state; + struct req_ctx *rctx; +}; + +static struct adc_state adc_state; + +static void adc_int(void) +{ + u_int32_t sr = adc->ADC_SR; + struct req_ctx *rctx = adc_state.rctx; + u_int16_t *val = (u_int16_t *) &(rctx->tx.data[rctx->tx.tot_len]); + + switch (adc_state.state) { + case ADC_NONE: + break; + case ADC_READ_CONTINUOUS_USB: + if (sr & AT91C_ADC_ENDRX) { + /* rctx full, get rid of it */ + req_ctx_set_state(rctx, RCTX_STATE_UDP_EP2_PENDING); + adc_state.state = ADC_NONE; + adc_state.rctx = NULL; + + /* Disable EOC interrupts since we don't want to + * re-start conversion any further*/ + AT91F_ADC_DisableIt(AT91C_BASE_ADC, + AT91C_ADC_EOC4|AT91C_ADC_EOC5); + AT91F_PDC_DisableRx(AT91C_BASE_PDC_ADC); + } + + if (sr & (AT91C_ADC_EOC4|AT91C_ADC_EOC5)) { + /* re-start conversion, since we need more values */ + AT91F_ADC_StartConversion(adc); + } + break; + } +} + +#if 0 +u_int16_t adc_read_fieldstr(void) +{ + return adc->ADC_CDR4; +} + +u_int16_T adc_read_pll_dem(void) +{ + return adc +} +#endif + +static int adc_usb_in(struct req_ctx *rctx) +{ + struct openpcd_hdr *poh = (struct openpcd_hdr *) &rctx->rx.data[0]; + struct openpcd_hdr *pih = (struct openpcd_hdr *) &rctx->tx.data[0]; + + switch (poh->cmd) { + case OPENPCD_CMD_ADC_READ: + //channel = poh->reg; + if (adc_state.rctx) { + /* FIXME: do something */ + req_ctx_put(rctx); + } + + adc_state.state = ADC_READ_CONTINUOUS_USB; + adc_state.rctx = rctx; + AT91F_ADC_EnableChannel(AT91C_BASE_ADC, OPENPICC_ADC_CH_FIELDSTR); + AT91F_ADC_EnableIt(AT91C_BASE_ADC, AT91C_ADC_ENDRX | + OPENPICC_ADC_CH_FIELDSTR); + AT91F_PDC_SetRx(AT91C_BASE_PDC_ADC, rctx->rx.data, 60 /*FIXME*/); + AT91F_PDC_EnableRx(AT91C_BASE_PDC_ADC); + break; + } +} + +int adc_init(void) +{ + AT91F_ADC_CfgPMC(); + AT91F_ADC_CfgTimings(AT91C_BASE_ADC, 48 /*MHz*/, 5 /*MHz*/, + 20/*uSec*/, 700/*nSec*/); + AT91F_ADC_EnableChannel(AT91C_BASE_ADC, OPENPICC_ADC_CH_FIELDSTR | + OPENPICC_ADC_CH_PLL_DEM); + + usb_hdlr_register(&adc_usb_in, OPENPCD_CMD_CLS_ADC); +} diff --git a/openpcd/firmware/src/picc/decoder.c b/openpcd/firmware/src/picc/decoder.c index 2ca051f..9f9191a 100644 --- a/openpcd/firmware/src/picc/decoder.c +++ b/openpcd/firmware/src/picc/decoder.c @@ -2,8 +2,11 @@ * (C) 2006 by Harald Welte */ +#include #include -#include "decoder.h" +#include + +#include static struct decoder_algo *decoder_algo[DECODER_NUM_ALGOS]; @@ -21,7 +24,7 @@ static int get_next_data(struct decoder_state *st, u_int8_t *data) int decoder_decode(u_int8_t algo, const char *sample_buf, int sample_buf_size, char *data_buf) { - int ret; + int i, ret; struct decoder_state st; if (algo >= DECODER_NUM_ALGOS) @@ -45,17 +48,17 @@ int decoder_decode(u_int8_t algo, const char *sample_buf, return i+1; } -int decoder_register(int algo, struct decoder_algo *algo) +int decoder_register(int algnum, struct decoder_algo *algo) { - if (algo >= DECODER_NUM_ALGOS) + if (algnum >= DECODER_NUM_ALGOS) return -EINVAL; - decoder_algos[algo] = algo; + decoder_algo[algnum] = algo; return 0; } -int decoder_init(void) +void decoder_init(void) { decoder_register(DECODER_MILLER, &miller_decoder); decoder_register(DECODER_NRZL, &nrzl_decoder); diff --git a/openpcd/firmware/src/picc/decoder.h b/openpcd/firmware/src/picc/decoder.h index 950efd2..aef0e20 100644 --- a/openpcd/firmware/src/picc/decoder.h +++ b/openpcd/firmware/src/picc/decoder.h @@ -6,7 +6,7 @@ struct decoder_state; struct decoder_algo { u_int8_t oversampling_rate; u_int8_t bits_per_sampled_char; - u_int8_t bytesample_mask; + u_int32_t bytesample_mask; int (*decode_sample)(const u_int32_t sample, u_int8_t data); u_int32_t (*get_next_bytesample)(struct decoder_state *st, u_int8_t *parity_sample); }; @@ -18,7 +18,7 @@ struct decoder_state { const u_int32_t *buf32; }; -extern int decoder_register(int algo, struct decoder_algo *algo); +extern int decoder_register(int algnum, struct decoder_algo *algo); extern int decoder_decode(u_int8_t algo, const char *sample_buf, int sample_buf_size, char *data_buf); @@ -26,7 +26,7 @@ extern int decoder_decode(u_int8_t algo, const char *sample_buf, #define DECODER_NRZL 1 #define DECODER_NUM_ALGOS 2 -extern struct decoder_algo nrzl_decoder; -extern struct decoder_algo miller_decoder; +static struct decoder_algo nrzl_decoder; +static struct decoder_algo miller_decoder; #endif diff --git a/openpcd/firmware/src/picc/decoder_miller.c b/openpcd/firmware/src/picc/decoder_miller.c index 4036511..1394a17 100644 --- a/openpcd/firmware/src/picc/decoder_miller.c +++ b/openpcd/firmware/src/picc/decoder_miller.c @@ -25,7 +25,9 @@ */ #include -#include "decoder.h" + +#include +#include #define OVERSAMPLING_RATE 4 @@ -47,7 +49,7 @@ static u_int8_t miller_decode_sampled_bit(u_int32_t sampled_bit) return 0; break; default: - DEBUGP("unknown sequence sample `%x' ", bit_sample); + DEBUGP("unknown sequence sample `%x' ", sampled_bit); return 2; break; } @@ -57,7 +59,7 @@ static u_int8_t miller_decode_sampled_bit(u_int32_t sampled_bit) static int miller_decode_sample(u_int32_t sample, u_int8_t *data) { u_int8_t ret = 0; - int err, i; + unsigned int i; for (i = 0; i < sizeof(sample)/OVERSAMPLING_RATE; i++) { u_int8_t bit = miller_decode_sampled_bit(sample & 0xf); @@ -83,7 +85,6 @@ static u_int32_t get_next_bytesample(struct decoder_state *ms, u_int8_t *parity_sample) { u_int32_t ret = 0; - u_int8_t parity_sample; /* get remaining bits from the current word */ ret = *(ms->buf32) >> ms->bit_ofs; @@ -91,7 +92,7 @@ static u_int32_t get_next_bytesample(struct decoder_state *ms, ms->buf32++; /* if required, get remaining bits from next word */ - if (bit_ofs) + if (ms->bit_ofs) ret |= *(ms->buf32) << (32 - ms->bit_ofs); *parity_sample = (*(ms->buf32) >> ms->bit_ofs & 0xf); diff --git a/openpcd/firmware/src/picc/decoder_nrzl.c b/openpcd/firmware/src/picc/decoder_nrzl.c index bb297db..a1b79aa 100644 --- a/openpcd/firmware/src/picc/decoder_nrzl.c +++ b/openpcd/firmware/src/picc/decoder_nrzl.c @@ -35,8 +35,10 @@ * */ +#include #include -#include "decoder.h" +#include +#include /* currently this code will only work with oversampling_rate == 1 */ #define OVERSAMPLING_RATE 1 @@ -64,7 +66,7 @@ static u_int32_t get_next_bytesample(struct decoder_state *st, return ret & bytesample_mask; } -static int nrzl_decode_sample(const u_int32_t sample, u_int8_t data) +static int nrzl_decode_sample(const u_int32_t sample, u_int8_t *data) { *data = (sample >> 1) & 0xff; @@ -83,7 +85,7 @@ static int nrzl_decode_sample(const u_int32_t sample, u_int8_t data) static struct decoder_algo nrzl_decoder = { .oversampling_rate = OVERSAMPLING_RATE, .bits_per_sampled_char = 10 * OVERSAMPLING_RATE, - .bytesample_mask = 0x3ff; + .bytesample_mask = 0x3ff, .decode_sample = &nrzl_decode_sample, .get_next_bytesample = &get_next_bytesample, }; diff --git a/openpcd/firmware/src/picc/main_openpicc.c b/openpcd/firmware/src/picc/main_openpicc.c index 795f460..59e5bac 100644 --- a/openpcd/firmware/src/picc/main_openpicc.c +++ b/openpcd/firmware/src/picc/main_openpicc.c @@ -12,6 +12,7 @@ void _init_func(void) { tc_cdiv_init(); + adc_init(); ssc_rx_init(); // ssc_tx_init(); } diff --git a/openpcd/firmware/src/picc/ssc_picc.c b/openpcd/firmware/src/picc/ssc_picc.c index ac371b7..2949da6 100644 --- a/openpcd/firmware/src/picc/ssc_picc.c +++ b/openpcd/firmware/src/picc/ssc_picc.c @@ -255,7 +255,7 @@ static void ssc_irq(void) case SSC_MODE_14443A_STANDARD: if (ssc_sr & (AT91C_SSC_ENDRX | AT91C_SSC_RXBUFF)) { -#if 0 +#if 1 /* Mark primary RCTX as ready to send for usb */ req_ctx_set_state(ssc_state.rx_ctx[0], RCTX_STATE_UDP_EP2_PENDING); @@ -319,6 +319,7 @@ static int ssc_usb_in(struct req_ctx *rctx) /* FIXME: implement this */ switch (poh->cmd) { case OPENPCD_CMD_SSC_READ: + break; case OPENPCD_CMD_SSC_WRITE: break; -- cgit v1.2.3